KINDAI UNIVERSITY


※苗字と名前の間にスペースをあけ、入力してください

SOFIA LYKAWKA Patrykソフィア リカフィカ パトリック

プロフィール

所属部署名総合社会学部 社会・マスメディア系専攻
職名准教授
学位博士(学術)
専門地球惑星科学、科学哲学
ジャンル科学・技術/天文宇宙
コメンテータガイドhttps://www.kindai.ac.jp/meikan/275-patorikku-sofia-rikafika.html
ホームページURLhttp://sites.google.com/site/patryksofialykawka/
メールアドレス
Last Updated :2020/07/08

コミュニケーション情報 byコメンテータガイド

コメント

    「小天体(小惑星、彗星)の軌道進化、及び惑星の形成により、どのように地球-月系は形成されたのか?」「小天体は水を運んできたのか?彗星はどこから来るのか?」こうした謎の真相を追求しています。

学歴・経歴

学歴

  • 2004年04月 - 2007年03月, 神戸大学, 自然科学研究科

経歴

  •   2015年04月,  - 現在, 近畿大学 総合社会学部 准教授
  •   2010年04月,  - 2015年03月, 近畿大学、総合社会学部 講師
  •   2009年04月,  - 2010年03月, 近畿大学、国際人文科学研究所 助教
  •   2007年04月,  - 2009年03月, 神戸大学、自然科学研究科 日本学術振興会外国人特別研究員

研究活動情報

研究分野

  • 人文・社会, 科学教育
  • 自然科学一般, 天文学
  • 自然科学一般, 固体地球科学, 惑星系・小天体の物理学と力学

研究キーワード

  • 軌道共鳴, 惑星移動, 天体力学, 太陽系小天体, 太陽系, 惑星形成, 太陽系外縁天体, 惑星科学

論文

  • Constraining the Formation of the Four Terrestrial Planets in the Solar System, Lykawka Patryk Sofia, Ito Takashi, ASTROPHYSICAL JOURNAL, ASTROPHYSICAL JOURNAL, 883, 2,   2019年10月01日, 査読有り
  • A comparative study of size frequency distributions of Jupiter Trojans, Hildas and main belt asteroids: A clue to planet migration history, Yoshida Fumi, Terai Tsuyoshi, Ito Takashi, Ohtsuki Keiji, Lykawka Patryk Sofia, Hiroi Takahiro, Takato Naruhisa, PLANETARY AND SPACE SCIENCE, PLANETARY AND SPACE SCIENCE, 169, 78, 85,   2019年05月, 査読有り
  • Colors of Centaurs observed by the Subaru/Hyper Suprime-Cam and implications for their origin, Sakugawa Haruka, Terai Tsuyoshi, Ohtsuki Keiji, Yoshida Fumi, Takato Naruhisa, Lykawka Patryk Sofia, Wang Shiang-Yu, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70, 6,   2018年12月, 査読有り
  • "TNOs are Cool": A survey of the trans-Neptunian region XIV. Size/albedo characterization of the Haumea family observed with Herschel and Spitzer, Vilenius E, Stansberry J, Mueller T, Mueller M, Kiss C, Santos-Sanz P, Mommert M, Pal A, Lellouch E, Ortiz J. L, Peixinho N, Thirouin A, Lykawka P. S, Horner J, Duffard R, Fornasier S, Delsanti A, ASTRONOMY & ASTROPHYSICS, ASTRONOMY & ASTROPHYSICS, 618,   2018年10月19日, 査読有り
  • OSSOS. IX. Two Objects in Neptune's 9:1 Resonance-Implications for Resonance Sticking in the Scattering Population, Volk Kathryn, Murray-Clay Ruth A, Gladman Brett J, Lawler Samantha M, Yu Tze Yeung Mathew, Alexandersen Mike, Bannister Michele T, Chen Ying-Tung, Dawson Rebekah I, Greenstreet Sarah, Gwyn Stephen D. J, Kavelaars J. J, Lin Hsing Wen, Lykawka Patryk Sofia, Petit Jean-Marc, ASTRONOMICAL JOURNAL, ASTRONOMICAL JOURNAL, 155, 6,   2018年06月, 査読有り
  • OSSOS. VII. 800+Trans-Neptunian Objects-The Complete Data Release, Bannister Michele T, Gladman Brett J, Kavelaars J. J, Petit Jean-Marc, Volk Kathryn, Chen Ying-Tung, Alexandersen Mike, Gwyn Stephen D. J, Schwamb Megan E, Ashton Edward, Benecchi Susan D, Cabral Nahuel, Dawson Rebekah I, Delsanti Audrey, Fraser Wesley C, Granvik Mikael, Greenstreet Sarah, Guilbert-Lepoutre Aurelie, Ip Wing-Huen, Jakubik Marian, Jones R. Lynne, Kaib Nathan A, Lacerda Pedro, Van Laerhoven Christa, Lawler Samantha, Lehner Matthew J, Lin Hsing Wen, Lykawka Patryk Sofia, Marsset Michael, Murray-Clay Ruth, Pike Rosemary E, Rousselot Philippe, Shankman Cory, Thirouin Audrey, Vernazza Pierre, Wang Shiang-Yu, ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 236, 1,   2018年05月, 査読有り
  • Multi-band photometry of trans-Neptunian objects in the Subaru Hyper Suprime-Cam survey, Terai Tsuyoshi, Yoshida Fumi, Ohtsuki Keiji, Lykawka Patryk Sofia, Takato Naruhisa, Higuchi Arika, Ito Takashi, Komiyama Yutaka, Miyazaki Satoshi, Wang Shiang-Yu, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70,   2018年01月, 査読有り
  • OSSOS III—RESONANT TRANS-NEPTUNIAN POPULATIONS: CONSTRAINTS FROM THE FIRST QUARTER OF THE OUTER SOLAR SYSTEM ORIGINS SURVEY, Kathryn Volk, Ruth Murray-Clay, Brett Gladman, Samantha Lawler, Michele T. Bannister, J. J. Kavelaars, Jean-Marc Petit, Stephen Gwyn, Mike Alexandersen, Ying-Tung Chen, Patryk Sofia Lykawka, Wing Ip, Hsing Wen Lin, The Astronomical Journal, The Astronomical Journal, 152, 1, 23,   2016年07月, 査読有り
  • 2001 QR$_{322}$ - an update on Neptune's first unstable Trojan companion, Jonathan Horner, Patryk Sofia Lykawka,   2016年01月04日
    概要:The Neptune Trojans are the most recent addition to the panoply of Solar system small body populations. The orbit of the first discovered member, 2001 QR$_{322}$, was investigated shortly after its discovery, based on early observations of the object, and it was found to be dynamically stable on timescales comparable to the age of the Solar system. As further observations were obtained of the object over the following years, the best-fit solution for its orbit changed. We therefore carried out a new study of 2001 QR$_{322}$'s orbit in 2010, finding that it lay on the boundary between dynamically stable and unstable regions in Neptune's Trojan cloud, and concluding that further observations were needed to determine the true stability of the object's orbit. Here we follow up on that earlier work, and present the preliminary results of a dynamical study using an updated fit to 2001 QR$_{322}$'s orbit. Despite the improved precision with which the orbit of 2001 QR$_{322}$ is known, we find that the best-fit solution remains balanced on a knife-edge, lying between the same regions of stability and instability noted in our earlier work. In the future, we intend to carry out new observations that should hopefully refine the orbit to an extent that its true nature can finally be disentangled.
  • 2001 QR $ _ ${$322$}$ $-an update on Neptune's first unstable Trojan companion, Horner Jonathan, Lykawka Patryk Sofia, arXiv preprint arXiv:1601.00383, arXiv preprint arXiv:1601.00383,   2016年, 査読有り
  • The Outer Solar System Origins Survey: I. Design and First-Quarter Discoveries, Bannister Michele T, Kavelaars JJ, Petit Jean-Marc, Gladman Brett J, Gwyn Stephen DJ, Chen Ying-Tung, Volk Kathryn, Alexandersen Mike, Benecchi Susan, Delsanti Audrey, oth, arXiv preprint arXiv:1511.02895, arXiv preprint arXiv:1511.02895,   2015年, 査読有り
  • 地球型惑星形成における巨大惑星の移動と共鳴クロッシングの影響, Lykawka Patryk Sofia, Ito Takashi, Proceedings of the ISAS Lunar and Planetary Symposium, Proceedings of the ISAS Lunar and Planetary Symposium, 46, 8p,   2014年, 査読有り
  • Terrestrial planet formation during the migration and resonance crossings of the giant planets, Lykawka Patryk Sofia, Ito Takashi, The Astrophysical Journal, The Astrophysical Journal, 773, 1, 65,   2013年08月10日, 査読有り
    概要:The newly formed giant planets may have migrated and crossed a number of mutual mean motion resonances (MMRs) when smaller objects (embryos) were accreting to form the terrestrial planets. We investigated the effects of the planetesimal-driven migration of Jupiter and Saturn, and the influence of their mutual 1:2 MMR crossing on terrestrial planet formation for the first time, by performing N-body simulations. These simulations considered distinct timescales of MMR crossing and planet migration. In total, 68 high-resolution simulation runs using 2000 disk planetesimals were performed, which was a significant improvement on previously published results. Even when the effects of the 1:2 MMR crossing and planet migration were included in the system, Venus and Earth analogs (considering both orbits and masses) successfully formed in several runs. In addition, we found that the orbits of planetesimals beyond a ~1.5-2 AU were dynamically depleted by the strengthened sweeping secular resonances associated with Jupiter's and Saturn's more eccentric orbits (relative to present-day) during planet migration. However, this depletion did not prevent the formation of massive Mars analogs (planets with more than 1.5 times Mars' mass). Although late MMR crossings (at t > 30 Myr) could remove such planets, Mars-like small mass planets survived on overly excited orbits (high e and/or i), or were completely lost in these systems. We conclude that the orbital migration and crossing of the mutual 1:2 MMR of Jupiter and Saturn are unlikely to provide suitable orbital conditions for the formation of solar system terrestrial planets. This suggests that to explain Mars' small mass and the absence of other planets between Mars and Jupiter, the outer asteroid belt must have suffered a severe depletion due to interactions with Jupiter/Saturn, or by an alternative mechanism (e.g., rogue super-Earths).
  • TERRESTRIAL PLANET FORMATION DURING THE MIGRATION AND RESONANCE CROSSINGS OF THE GIANT PLANETS, Patryk Sofia Lykawka, Takashi Ito, The Astrophysical Journal, The Astrophysical Journal, 773, 1, 65,   2013年07月, 査読有り
  • 平成24 年度国立天文台天文シミュレーションプロジェクト成果報告書, パトリック ソフィア リカフィカ,   2013年04月
    概要:有無自己重力の微惑星円盤による惑星と小天体の軌道進化 Dynamical evolution of planets and small bodies in massive planetesimal disks with and without self-gravity
  • On the orbital (in)stability of Trojan asteroids in the solar system, LYKAWKA Patryk Sofia, HORNER Jonathan, MUELLER Thomas, スペースガード研究, スペースガード研究, 5, 5, 13, 16,   2013年02月24日
  • Capturing Trojans and Irregular Satellites - the key required to unlock planetary migration, Jonathan Horner, F. Elliott Koch, Patryk Sofia Lykawka,   2013年02月10日
    概要:It is now accepted that the Solar system's youth was a dynamic and chaotic time. The giant planets migrated significant distances to reach their current locations, and evidence of that migration's influence on the Solar system abounds. That migration's pace, and the distance over which it occurred, is still heavily debated. Some models feature systems in which the giant planets were initially in an extremely compact configuration, in which Uranus and Neptune are chaotically scattered into the outer Solar system. Others feature architectures that were initially more relaxed, and smoother, more sedate migration. To determine which of these scenarios best represents the formation of our Solar system, we must turn to the structure of the system's small body populations, in which the scars of that migration are still clearly visible. We present the first results of a program investigating the effect of giant planet migration on the reservoirs of small bodies that existed at that time. As the planets migrate, they stir these reservoirs, scattering vast numbers of small bodies onto dynamically unstable orbits in the outer Solar system. The great majority of those bodies are rapidly removed from the system, through collisions and ejections, but a small number become captured as planetary Trojans or irregular satellites. Others are driven by the migration, leading to a significant sculpting of the asteroid belt and trans-Neptunian region. The capture and retention efficiencies to these stable reservoirs depend on the particular migration scenario used. Advocates of chaotic migration from an initially compact scenario argue that smoother, more sedate migration cannot explain the observed populations of Trojans and irregular satellites. Our results draw a strikingly different picture, revealing that such smooth migration is perfectly capable of reproducing the observed populations.
  • Capturing Trojans and Irregular Satellites-the key required to unlock planetary migration, Horner Jonathan, Koch F Elliott, Lykawka Patryk Sofia, arXiv preprint arXiv:1302.2304, arXiv preprint arXiv:1302.2304,   2013年, 査読有り
  • On the orbital (in)stability of Trojan asteroids in the solar system, パトリック ソフィア リカフィカ, Jonathan Horner, Thomas Mueller, Spaceguard Research, Spaceguard Research, 5, 13, 16,   2013年, 査読有り
  • Trans-Neptunian objects as natural probes to the unknown solar system, Patryk Sofia Lykawka, Monographs on Environment, Earth and Planets, Volume 1, Issue 3, p. 121-186, Monographs on Environment, Earth and Planets, Volume 1, Issue 3, p. 121-186, 1, 3, 121, 186,   2012年12月26日, 査読有り
    概要:Trans-Neptunian objects (TNOs) are icy/rocky bodies that move beyond the orbit of Neptune in a region known as the trans-Neptunian belt (or Edgeworth-Kuiper belt). In contrast to the predictions of accretion models that feature protoplanetary disk planetesimals evolving on dynamically cold orbits (with both very small eccentricities, e, and inclinations, i), in reality TNOs exhibit surprisingly wide ranges of orbital eccentricities and inclinations. Several theoretical models have addressed the origin and orbital evolution of the main dynamical classes of TNOs, but none have successfully reproduced them all. In addition, none have explained several objects on peculiar orbits, or provided insightful predictions, without which a model cannot be tested properly against observations. Based on extensive simulations of planetesimal disks with the presence of the four giant planets and huge numbers of modeled planetesimals, I explore in detail the dynamics of the TNOs, in particular their (un)stable regions over timescales comparable to the age of the solar system, and the role of resonances across the entire trans-Neptunian region. I also propose that, along with the orbital history of the giant planets, the orbital evolution of primordial embryos (massive planetesimals comparable to Mars-Earth masses) can explain the fine orbital structure of the trans-Neptunian belt, the orbits of Jovian and Neptunian Trojans, and possibly the current orbits of the giant planets. Those primordial embryos were ultimately scattered by the giant planets, a process that stirred both the orbits of the giant planets and the primordial planetesimal disk to the levels observed at 40-50 AU. In particular, the main constraints provided by the trans-Neptunian belt are optimally satisfied if at least one such primordial embryo (planetoid) survived in the outskirts of the solar system.
  • Trans-Neptunian objects as natural probes to the unknown solar system(招待研究論文), パトリック ソフィア リカフィカ, Monographs on Environment, Earth and Planets, Monographs on Environment, Earth and Planets, 1, 121, 186,   2012年12月
    概要:Invited review paper (招待研究論文)
  • O9-08 地球型惑星形成における巨大惑星の移動と共鳴クロッシングの影響(口頭発表セッション9(惑星形成論II),口頭発表), リカフィカ パトリック ソフィア, 伊藤 孝士, 日本惑星科学会秋期講演会予稿集, 日本惑星科学会秋期講演会予稿集, 2012,   2012年10月24日
  • 初期太陽系における巨大惑星のトロヤ群天体の捕獲と解放, LYKAWKA Patryk Sofia, HORNER Jonathan, 日本天文学会年会講演予稿集, 日本天文学会年会講演予稿集, 2012, 108,   2012年08月20日
  • NASA・OSS program(惑星系の起源研究プログラム)に投稿された研究計画申請等の審査報告書, パトリック ソフィア リカフィカ,   2012年08月
    概要:計:8部
  • 平成23年度学内研究助成金・研究成果報告書, パトリック ソフィア リカフィカ,   2012年06月
  • 平成23年度国立天文台共同研究報告書, パトリック ソフィア リカフィカ,   2012年06月
  • Are Two of the Neptune Trojans Dynamically Unstable?, Jonathan Horner, パトリック ソフィア リカフィカ, Proceedings of the Australian Space Science Conference, Proceedings of the Australian Space Science Conference, 11, 27, 38,   2012年06月
  • 平成23 年度国立天文台天文シミュレーションプロジェクト成果報告書, パトリック ソフィア リカフィカ,   2012年04月
    概要:有無自己重力の微惑星円盤による惑星と小天体の軌道進化 Dynamical evolution of planets and small bodies in massive planetesimal disks with and without self-gravity
  • Are Two of the Neptune Trojans Dynamically Unstable?, Jonathan Horner, Patryk Sofia Lykawka,   2012年02月26日
    概要:The Neptune Trojans are the most recently discovered population of small bodies in the Solar System. To date, only eight have been discovered, though it is thought likely that the total population at least rivals that of the asteroid belt. Their origin is still the subject of some debate. Here, we detail the results of dynamical studies of two Neptune Trojans, 2001 QR322 and 2008 LC18. We find that both objects lie very close to boundaries between dynamically stable and unstable regions, with a significant probability that either or both of the objects are actually unstable on timescales of a few hundred million years. Such instability supports the idea that at least these two Neptune Trojans are dynamically captured objects, rather than objects that formed in situ. This that does not, however, rule out the possibility that these two objects were captured during Neptune's proposed post-formation migration, and have remained as Trojans ever since.
  • トロヤ群、ハウメア族、奇妙な小天体などによる主な結果と外部太陽系への含意 (特別講演), パトリック ソフィア リカフィカ,   2012年02月
  • Trans-Neptunian objects as natural probes to the unknown solar system, Lykawka Patryk Sofia, arXiv preprint arXiv:1212.6124, arXiv preprint arXiv:1212.6124,   2012年, 査読有り
  • Dynamical Evolution of Haumea Collisional Family and Implications for the Outer Solar System, Lykawka PS, Horner J, Mukai T, Nakamura AM, LPI Contributions, LPI Contributions, 1667, 6056,   2012年, 査読有り
  • Are Two of the Neptune Trojans Dynamically Unstable?, Horner Jonathan, Lykawka Patryk Sofia, arXiv preprint arXiv:1202.5729, arXiv preprint arXiv:1202.5729,   2012年, 査読有り
  • Evaluation of the Uncanny Valley in CG Characters, DILL Vanderson, FLACH Laura Mattos, HOCEVAR Rafael, LYKAWKA Christian, MUSSE Soraia R, PINHO Marcio Sarroglia, Lect Notes Comput Sci, Lect Notes Comput Sci, 7502, 511, 513,   2012年
  • Solar System Science with the Hyper Suprime-Cam Survey, Fumi Yoshida, パトリック ソフィア リカフィカ, Tsuyoshi Terai, Seitaro Urakawa, Shinsuke Abe, Wing-Huen Ip, Ryuichi Takahashi, Takashi Ito, HSC SOLAR SYSTEM, SCIENCE GROUP, Advances in Geosciences, Advances in Geosciences, 25, 1, 9,   2011年07月
  • 平成22 年度国立天文台天文シミュレーションプロジェクト成果報告書, パトリック ソフィア リカフィカ,   2011年04月
    概要:有無自己重力の微惑星円盤による惑星と小天体の軌道進化 Dynamical evolution of planets and small bodies in massive planetesimal disks with and without self-gravity
  • 準惑星ハウメア衝突族の軌道進化:カイパーベルトの歴史への影響, LYKAWKA Patryk Sofia, HORNER Jonathan, NAKAMURA Akiko M, MUKAI Tadashi, 日本天文学会年会講演予稿集, 日本天文学会年会講演予稿集, 2011, 97,   2011年02月20日
  • トロヤ群天体と太陽系の起源と軌道進化, LYKAWKA Patryk Sofia, HORNER Jonathan, JONES Barrie, MUKAI Tadashi, 日本天文学会年会講演予稿集, 日本天文学会年会講演予稿集, 2011, 96,   2011年02月20日
  • 地球創生メカニズムの解明--地球型惑星形成と小天体軌道進化の研究, Lykawka Patryk Sofia, o, 近畿大学学内研究助成金研究報告書 (2011.), 近畿大学学内研究助成金研究報告書 (2011.), 1,   2011年, 査読有り
  • The capture and release of Trojan asteroids by the giant planets during the solar system history, Lykawka PS, EPSC-DPS Joint Meeting 2011, EPSC-DPS Joint Meeting 2011, 1, 1246,   2011年, 査読有り
  • Dynamical evolution of Haumea collisional family: Clues on the collision physics, new family members and implications for the outer solar system, Lykawka PS, Horner J, Nakamura AM, Mukai T, EPSC-DPS Joint Meeting 2011, EPSC-DPS Joint Meeting 2011, 1, 891,   2011年, 査読有り
  • Our solar system and its members: the true character of a big family (公開講演) [in Japanese], パトリック ソフィア リカフィカ,   2010年08月
  • Origin and Evolution of the Solar System: Evidence for a new planet in the solar system? (公開講演) [in Japanese], パトリック ソフィア リカフィカ,   2010年08月
  • Trojan asteroids of Neptune and their link with comets in the solar system (研究紹介), パトリック ソフィア リカフィカ, Jonathan Horner, Barrie W. Jones, Tadashi Mukai, 'New Scientist' and online at 'Universe Today' and 'Space.com', 'New Scientist' and online at 'Universe Today' and 'Space.com',   2010年07月
  • 平成21 年度国立天文台天文シミュレーションプロジェクト成果報告書, パトリック ソフィア リカフィカ,   2010年04月
    概要:有無自己重力の微惑星円盤による惑星と小天体の軌道進化 Dynamical evolution of planets and small bodies in massive planetesimal disks with and without self-gravity
  • Trojan asteroids and the early evolution of the solar system, Lykawka Patryk S, Horner Jonathan, Jones Barrie, Mukai Tadashi, Bulletin of the American Astronomical Society, Bulletin of the American Astronomical Society, 42, 1001,   2010年, 査読有り
  • 惑星科学(新惑星理論を含む):社会への影響とニセ科学との違い, パトリック ソフィア リカフィカ, Tadashi Mukai,   2009年12月
    概要:SBS TV channel (Korea)
  • Trans-Neptunian Region Architecture: Evidence for a Planet Beyond Pluto, Bhardwaj Eds Anil, Advances in Geosciences: Volumes 10 ̂a 15, Advances in Geosciences: Volumes 10 ̂a 15, 15, 293, 304,   2009年07月, 査読有り
  • The possible existence of a new planet in the solar system! (公開講演) [in Japanese], パトリック ソフィア リカフィカ,   2009年07月
  • 大和日英基金財団の共同研究助成金・研究実績報告書, Jonathan Horner, パトリック ソフィア リカフィカ, Research Report Research Report, Research Report Research Report,   2009年06月
    概要:Research Report for the Daiwa Foundation Small Grant for research collaboration with Dr. Jonathan Horner (PI), Open University, United Kingdom. (2008年7月?2009年6月)
  • グレイトブリテン・ササカワ財団の共同研究助成金・研究実績報告書, Jonathan Horner, パトリック ソフィア リカフィカ, Research Report Research Report, Research Report Research Report,   2009年06月
    概要:Great Britain Sasakawa Foundation Small Grant for research collaboration with Dr. Jonathan Horner (PI), Open University, United Kingdom. (2008年7月-2009年6月)
  • 太陽系と外縁天体の起源と進化, パトリック ソフィア リカフィカ,   2009年05月
  • 日本学術振興会の研究助成金・研究実績報告書, Tadashi Mukai, パトリック ソフィア リカフィカ, Research Report Research Report, Research Report Research Report,   2009年04月
    概要:平成20年度科学研究費補助金実績報告書 (研究員・研究分担者)
  • 平成20 年度国立天文台天文シミュレーションプロジェクト成果報告書, パトリック ソフィア リカフィカ,   2009年04月
    概要:1.カイパーベルト天体の衝突と数十億年間の軌道進化 2.巨大微惑星の存在による太陽系小天体と巨大惑星の軌道進化 1. Collisional families in the Kuiper belt and their long-term dynamical evolution 2. Dynamical Evolution of Giant Planets and Solar System Small Bodies with the Presence of Embedded Massive Planetesimals
  • 登場!新惑星仮説, 向井 正, リカフィカ パトリック ソフィア, ながれ : 日本流体力学会誌, ながれ : 日本流体力学会誌, 27, 6, 425, 430,   2008年12月25日, 査読有り
  • Origin and Dynamical Evolution of Planets and Minor Bodies in the Solar System (特別講演) [in English], パトリック ソフィア リカフィカ,   2008年12月
  • P110 海王星以遠天体の長期軌道進化 : 断続的な平均運動共鳴捕獲の効果(ポスター:一般,ポスターセッション1), Lykawka Patryk Sofia, 向井 正, 日本惑星科学会秋期講演会予稿集, 日本惑星科学会秋期講演会予稿集, 2008, 0,   2008年11月01日
  • 310 海玉星トロヤ群の起源と軌道進化(微惑星と原始惑星,オーラルセッション8), Lykawka Patryk Sofia, Horner Jonathan, Mukai Tadashi, Jones Barrie, 日本惑星科学会秋期講演会予稿集, 日本惑星科学会秋期講演会予稿集, 2008, 0,   2008年11月01日
  • Life as a Foreign Researcher and Outstanding Questions about Planetary Sciences (公開講演) [in English], パトリック ソフィア リカフィカ,   2008年10月
  • 新惑星仮説の誕生(特別講演), 向井 正, リカフィカ パトリック ソフィア, 日本流体力学会年会講演論文集, 日本流体力学会年会講演論文集, 2008, 17, 22,   2008年09月04日
    概要:We present an introduction of "New Planet Hypothesis" in our solar system. This idea comes from the fact that the trans-Neptunian Objects (TNOs), discovered in 1992 and found, up to now, almost 1200 objects, show unexpected orbital features. Our "new planet" could excite the original static orbits of TNOs by its gravitational effect during its dynamical evolution, and consequently such unexpected features of TNOs' orbits appeared.
  • 科学の始まり《謎と仮説》(第6回)新惑星仮説の誕生, 向井 正, Lykawka Patryk Sofia, 科学, 科学, 78, 9, 985, 989,   2008年09月
  • 太陽系外縁部に未知の惑星?, パトリック ソフィア リカフィカ, Tadashi Mukai,   2008年07月
    概要:太陽系・カイパーベルト科学と太陽系外部に未知の惑星の理論は大きな反響をよび、太陽系内にある特異な天体や遠方にある未知の惑星への国内外の天文学者の観測意欲を高めました。また、惑星科学や天文学に関する多くのトピックがマスコミで紹介されました(日本を始め、〜58カ国で科学雑誌や新聞など100以上の項目・記事)。
  • 太陽系外縁部に未知の惑星とカイパーベルト科学, パトリック ソフィア リカフィカ, Tadashi Mukai,   2008年06月
    概要:SCIENCE ZERO (2回 in June/2008)
  • 太陽系に新惑星を予測, パトリック ソフィア リカフィカ, 大朝 由美子, 天文ガイド, 天文ガイド, 135,   2008年05月
  • Origin and Evolution of the Solar System (公開講演) [in Japanese], パトリック ソフィア リカフィカ,   2008年05月
  • Origin and Evolution of the Solar System (公開講演) [in Japanese], パトリック ソフィア リカフィカ,   2008年04月
  • Origin and Dynamical structure of the Trans-Neptunian Belt: Evidence for an Outer Planet in the Solar System? (特別講演) [in English], パトリック ソフィア リカフィカ,   2008年03月
  • Origin and Dynamical Structure of the Trans-Neptunian Belt: Evidence for an Outer Planet in the Solar System (研究報告講演), パトリック ソフィア リカフィカ, Tadashi Mukai,   2008年03月
  • 太陽系外縁部に未知の惑星?, パトリック ソフィア リカフィカ, Tadashi Mukai,   2008年02月
  • P110 海王星以遠天体の長期軌道進化: 断続的な平均運動共鳴捕獲の効果 (ポスター: 一般, ポスターセッション 1), Lykawka Patryk Sofia, 向井正, 日本惑星科学会秋期講演会予稿集, 日本惑星科学会秋期講演会予稿集, 2008, 101,   2008年, 査読有り
  • Origin of the Edgeworth-Kuiper Belt Architecture: Evidence of Dynamical Sculpting by an Outer Planet, Lykawka PS, Mukai T, LPI Contributions, LPI Contributions, 1405, 8231,   2008年, 査読有り
  • Long-Term Dynamical Evolution of Trans-Neptunian Objects in the Scattered Disk, Lykawka PS, Mukai T, LPI Contributions, LPI Contributions, 1405, 8234,   2008年, 査読有り
  • Impact Cratering Experiments to Targets with Cavity: Application to Cave Skylight on Mars, Michikami T, Miura S, Haruyama J, Lykawka PS, Lunar and Planetary Science Conference, Lunar and Planetary Science Conference, 39, 1593,   2008年, 査読有り
  • 310 海玉星トロヤ群の起源と軌道進化 (微惑星と原始惑星, オーラルセッション 8), Lykawka Patryk Sofia, Horner Jonathan, Mukai Tadashi, Jones Barrie, 日本惑星科学会秋期講演会予稿集, 日本惑星科学会秋期講演会予稿集, 2008, 71,   2008年, 査読有り
  • Origin and Dynamical structure of the Trans-Neptunian Belt (招待講演) [in English], パトリック ソフィア リカフィカ,   2008年
  • Origin and Dynamical Evolution of Neptune Trojans, LYKAWKA Patryk Sofia, HORNER Jonathan, MUKAI Tadashi, JONES Barrie, 日本惑星科学会秋季講演会予稿集, 日本惑星科学会秋季講演会予稿集, 2008, 71,   2008年, 査読有り
  • Long-term evolution of trans-Neptunian objects: Effects of multiple temporary captures in mean motion resonances, LYKAWKA Patryk Sofia, MUKAI Tadashi, 日本惑星科学会秋季講演会予稿集, 日本惑星科学会秋季講演会予稿集, 2008, 101,   2008年
  • 登場!新惑星仮説, 向井 正, リカフイカ パトリックソフィア, 日本流体力学会誌「ながれ」, 日本流体力学会誌「ながれ」, 27, 6, 425, 430,   2008年, 査読有り
    概要:本稿は2008年9月6日に神戸大学で行なわれた「2008年度流体力学会年会」での特別講演「新惑星仮説の誕生」に一部修正を加えた解説である.
  • Origin and Evolution of the Solar System: Outstanding Questions and Mysteries (公開講演) [in English], パトリック ソフィア リカフィカ,   2007年12月
  • A distant planet beyond Pluto and the origin of Edgeworth-Kuiper Belt architecture (特別講演) [in English], パトリック ソフィア リカフィカ,   2007年09月
  • Solar system topics (ゲスト講義) [in English], パトリック ソフィア リカフィカ,   2007年05月
  • 冥王星型氷天体の姿とその起源 (特集 太陽系の新しい常識), 向井 正, Lykawka Patryk Sofia, 科学, 科学, 77, 2, 171, 176,   2007年02月
  • Origin of Scattered Disk Resonant TNOs: Evidence for an Ancient Excited Kuiper Belt of 50AU Radius, LYKAWKA Patryk Sofia, MUKAI Tadashi, 日本惑星科学会秋季講演会予稿集, 日本惑星科学会秋季講演会予稿集, 2007, 2, 113, 341,   2007年02月01日, 査読有り
    概要:Resonance occupation of trans-neptunian objects (TNOs) in the scattered disk (> 48 ? AU) was investigated by integrating the orbits of 85 observed members for 4 Gyr. Twenty seven TNOs were locked in the 9:4, 16:7, 7:3, 12:5, 5:2, 8:3, 3:1, 4:1, 11:2, and 27:4 resonances. We then explored mechanisms for the origin of the resonant structure in the scattered disk, in particular the long-term 9:4, 5:2, and 8:3 resonant TNOs (median 4 Gyr), by performing large scale simulations involving Neptune scattering and planetary migration over an initially excited planetesimals disk (wide range of eccentricities and inclinations). To explain the formation of Gyr-resident populations in such distant resonances, our results suggest the existence of a primordial planetesimal disk of at least 45-50 AU radius that suffered a dynamical perturbation leading to 0.1-0.3 or greater eccentricities and a range of inclinations up to ?20° during early stages of the Solar System history, before planetary migration. ? 2006 Elsevier Inc. All rights reserved.
  • Long-term evolution and resonance sticking of scattered disk objects, Sofia Lykawka P, Mukai T, European Planetary Science Congress 2007, European Planetary Science Congress 2007, 1, 874,   2007年, 査読有り
  • 散乱円盤軌道共鳴天体の起源: 太陽系初期に摂動を受けた 50AU のカイパーベルトの証拠, ソフィア リカフィカパトリック, 日本惑星科学会秋季講演会予稿集, 日本惑星科学会秋季講演会予稿集, 2007, 0, 113, 113,   2007年, 査読有り
    概要:Trans-Neptunian objects (TNOs) orbit beyond Neptune and offer important clues on the origin and evolution of the solar system. We investigated the dynamical properties of 622 TNOs by performing computer simulations of their orbits plus several clones. We identified 196 TNOs locked in resonance with Neptune in the Edgeworth-Kuiper belt. Occupied resonances sorted by distance from the Sun are: 1:1, 5:4, 4:3, 11:8, 3:2, 18:11, 5:3, 12:7, 19:11, 7:4, 9:5, 11:6, 2:1, 9:4, 16:7, 7:3, 12:5, 5:2, 8:3, 3:1, 4:1, 11:2, and 27:4. Beyond 50AU, we examined the long-term evolution of 27 resonant TNOs by integrating their orbits over 4Gyr. The origin of 4Gyr-resident 9:4, 5:2, and 8:3 resonant TNOs was investigated using static and planetary migration dynamical models. We found that the long-term stable populations of 9:4, 5:2, and 8:3 resonant TNOs are well explained through adiabatic resonance capture by a migrating Neptune over a dynamically excited ancient trans-Neptunian belt. Therefore, this suggests that the primordial planetesimal disk had at least 47-50AU in radius, and suffered a dynamical perturbation leading to 0.1-0.3 or greater eccentricities and a range of inclinations up to ~20 degrees during early stages of the solar system's existence, before planetary migration.
  • An outer planet beyond Pluto and the origin of Kuiper belt architecture, Sofia Lykawka P, Mukai T, European Planetary Science Congress 2007, European Planetary Science Congress 2007, 1, 847,   2007年, 査読有り
  • A Distant Massive Planet Beyond Pluto and Origin of Kuiper Belt Architecture, Lykawka Patryk S, Mukai T, Bulletin of the American Astronomical Society, Bulletin of the American Astronomical Society, 39, 1042,   2007年, 査読有り
  • Trans-Neptunian Belt Architecture: Evidence for a Distant Planet in the Solar System, LYKAWKA Patryk Sofia, MUKAI Tadashi, 日本惑星科学会秋季講演会予稿集, 日本惑星科学会秋季講演会予稿集, 2007, 39,   2007年
  • カイパーベルトの構造:太陽系外縁に存在する惑星の証拠, ソフィア リカフィカ パトリック, 日本惑星科学会秋季講演会予稿集, 日本惑星科学会秋季講演会予稿集, 2007, 0, 39, 39,   2007年, 査読有り
    概要:Trans-Neptunian objects (TNOs) orbit in the so called trans-Neptunian belt (or Edgeworth-Kuiper belt). These icy bodies represent the relics of planet accretion in the outer solar system. We investigated the structure of the trans-Neptunian belt by conducting extensive computer simulations (4-5Gyr) using tens of thousands of particles in planetesimal disks. After taking into account several observational constraints, we developed a model to explain the origin and evolution of the belt by considering a hypothetical outer planet (or planetoid) with tenths of Earth masses orbiting beyond about 100AU.An outer planet in a distant orbit in the scattered disk can explain the ancient trans-Neptunian belt excitation, the formation of an outer edge at ~48AU, the entire TNO resonant population, the formation of detached TNOs and many other features in a self-consistent way. Noteworthy, the results match very well up-to-date observations. The best constraints obtained from the model for the planetoid are: aP=100-170AU, qP>80AU, iP=30-50 degrees, albedo=0.1-0.3, and apparent magnitude mP=15~17mag at perihelion.In summary, our model with the existence of a distant massive planet successfully describes the trans-Neptunian belt architecture with an unprecedented level of details.
  • 優秀ポスター賞, パトリック ソフィア リカフィカ,   2006年12月
    概要:Poster presentation: "Trans-Neptunian Region Architecture: Evidence for a Planet Beyond Pluto"
  • Exploring the 7: 4 mean motion resonance—II: Scattering evolutionary paths and resonance sticking, Lykawka Patryk Sofia, Mukai Tadashi, Planetary and Space Science, Planetary and Space Science, 54, 1, 87, 100,   2006年01月, 査読有り
    概要:In our preliminary study, we have investigated basic properties and dynamical evolution of classical TNOs around the 7:4 mean motion resonance with Neptune (a?43.7 AU), motivated by observational evidences that apparently present irregular features near this resonance (see [Lykawka and Mukai, 2005a. Exploring the 7:4 mean motion resonance - I. Dynamical evolution of classical trans-Neptunian objects (TNOs). Space Planet. Sci. 53, 1175-1187]; hereafter "Paper I"). In this paper, we aim to explore the dynamical long-term evolution in the scattered disk (but not its early formation) based on the computer simulations performed in Paper I together with extra computations. Specifically, we integrated the orbital motion of test particles (totalizing a bit more than 10,000) placed around the 7:4 mean motion resonance under the effect of the four giant planets for the age of the Solar System. In order to investigate chaotic diffusion, we also conducted a special simulation with on-line computation of proper elements following tracks in phase space over 4-5 Gyr. We found that: (1) A few percent (1-2%) of the test particles survived in the scattered disk with direct influence of other Neptunian mean motion resonances, indicating that resonance sticking is an extremely common phenomenon and that it helps to enhance scattered objects longevity. (2) In the same region, the so-called extended scattered TNOs are able to form via very long resonance trapping under certain conditions. Namely, if the body spends more than about 80% of its dynamical lifetime trapped in mean motion resonance(s) and there is the action of a k+1 or (k+2)/2 mean motion resonance (e.g., external mean motion resonances with Neptune described as (j+k)/j with j=1 and 2, respectively). According to this hypothetical mechanism, 5-15% of current scattered TNOs would possess q>40AU thus probably constituting a significant part of the extended scattered disk. (3) Moreover, considering hot orbital initial conditions, it is likely that the trans-Neptunian belt (or Edgeworth-Kuiper belt) has been providing members to the scattered disk, so that scattered TNOs observed today would consist of primordial scattered bodies mixed with TNOs that came from unstable regions of the trans-Neptunian belt in the past. Considering the three points together, our results demonstrated that the scattered disk has been evolving continuously since early times until present. ? 2005 Elsevier Ltd. All rights reserved.
  • Origin of Resonant TNOs: Evidence for an Ancient Excited Kuiper Belt of 50AU Radius, Lykawka PS, Mukai T, AGU Fall Meeting Abstracts, AGU Fall Meeting Abstracts, 1, 0178,   2006年, 査読有り
  • 専門分野で分析用様々なデータ検出するコンピューターコード(RESTICK), パトリック ソフィア リカフィカ, Used to extract the results in many scientific publications, Used to extract the results in many scientific publications,   2006年
  • A origem do Sistema Solar e o Cinturao de Kuiper (公開講演) [in Portuguese], パトリック ソフィア リカフィカ,   2005年08月
  • A origem do Sistema Solar e o cinturao de Kuiper (招待講演) [in Portuguese], パトリック ソフィア リカフィカ,   2005年
  • Exploring evolutionary paths and resonance sticking of scattered transneptunian objects, Lykawka PS, Mukai T, Bulletin of the American Astronomical Society, Bulletin of the American Astronomical Society, 36, 1102,   2004年, 査読有り
  • Exploring the 7:4 mean motion resonance and other features in the transneptunian belt (招待講演) [in English], パトリック ソフィア リカフィカ,   2004年
  • The 7: 4 mean motion resonance and dynamical structures in the classical transneptunian belt, Lykawka Patryk Sofia, Mukai Tadashi, 向井正, title 第 36 回月・惑星シンポジウム Proceedings of the 36th ISAS Lunar and Planetary Symposium, title 第 36 回月・惑星シンポジウム Proceedings of the 36th ISAS Lunar and Planetary Symposium, 161,   2003年, 査読有り
  • The Edgeworth-Kuiper belt (招待講演) [in Japanese], パトリック ソフィア リカフィカ,   2002年
  • 晴れ上がった太陽系初期円盤における微小天体に働く太陽摂動力, 向井 正, 富田 奈津美, 樋口 有理可, リカウカ パトリック, サクラヤン アブ, 日本惑星科学会秋季講演会予稿集, 日本惑星科学会秋季講演会予稿集, 2002, 0, 19, 19,   2002年
  • Patryk Sofia Lykawka・Jonathan Horner2)・Thomas Mueller 3), LYKAWKA Patryk Sofia, HORNER Jonathan, 査読有り
  • Planetary Trojans - the main source of short period comets?, Jonathan Horner, Patryk Sofia Lykawka, International Journal of Astrobiology 9, 227-234 (2010), International Journal of Astrobiology 9, 227-234 (2010), 9, 4, 227, 234,   2010年10月, 査読有り
    概要:We present a short review of the impact regime experienced by the terrestrial planets within our own Solar system, describing the three populations of potentially hazardous objects which move on orbits that take them through the inner Solar system. Of these populations, the origins of two (the Near-Earth Asteroids and the Long-Period Comets) are well understood, with members originating in the Asteroid belt and Oort cloud, respectively. By contrast, the source of the third population, the Short-Period Comets, is still under debate. The proximate source of these objects is the Centaurs, a po...
  • 2001 QR322: a dynamically unstable Neptune Trojan?, Horner J, Lykawka PS, Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, 405, 1, 49, 56,   2010年06月, 査読有り
    概要:Since early work on the stability of the first Neptunian Trojan, 2001 QR322, suggested that it was a dynamically stable, primordial body, it has been assumed this applies to both that object, and its more recently discovered brethren. However, it seems that things are no longer so clear cut. In this work, we present the results of detailed dynamical simulations of the orbital behaviour of 2001 QR322. Using an ephemeris for the object that has significantly improved since earlier works, we follow the evolution of 19683 test particles, placed on orbits within the observational error ellipse of 2001 QR322's orbit, for a period of 1 Gyr. We find that majority of these "clones" of 2001 QR322 are dynamically unstable, exhibiting a near-exponential decay from both the Neptunian Trojan cloud (decay halflife ~550 Myr) and the Solar system (decay halflife ~590 Myr). The stability of the object within Neptune's Trojan cloud is found to be strongly dependent on the initial semi-major axis used, with those objects located at semimajor axis equal or greater than 30.30 AU being significantly less stable than those interior to this value, as a result of their having initial libration amplitudes very close to a critical threshold dividing regular and irregular motion, located at ~70-75 deg (full extent of angular motion). This result suggests that, if 2001 QR322 is a primordial Neptunian Trojan, it must be a representative of a population that was once significantly larger than that we see today, and adds weight to the idea that the Neptune Trojans may represent a significant source of objects moving on unstable orbits between the giant planets (the Centaurs).
  • The Neptune Trojans--a new source for the Centaurs?, Horner Jonathan, Lykawka Patryk Sofia, Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, 402, 1, 13, 20,   2010年02月, 査読有り
    概要:The fact that the Centaurs are the primary source of the Short Period Comets is well established. However, the origin of the Centaurs themselves is still under some debate, with a variety of different source reservoirs being proposed in the last decade. In this work, we suggest that the Neptune Trojans (together with the Jovian Trojans) could represent an additional significant source of Centaurs. Using dynamical simulations of the first Neptune Trojan discovered (2001 QR322), together with integrations following the evolution of clouds of theoretical Neptune Trojans obtained during simulations of planetary migration, we show that the Neptune Trojan population contains a great number of objects which are unstable on both Myr and Gyr timescales. Using individual examples, we show how objects that leave the Neptunian Trojan cloud evolve onto orbits indistinguishable from those of the known Centaurs, before providing a range of estimates of the flux from this region to the Centaur population. With only moderate assumptions, it is shown that the Trojans can contribute a significant proportion of the Centaur population, and may even be the dominant source reservoir. This result is supported by past work on the colours of the Trojans and the Centaurs, but it will take future observations to determine the full scale of the contribution of the escaped Trojans to the Centaur population.
  • Origin and dynamical evolution of Neptune Trojans - I. Formation and planetary migration, LYKAWKA Ps, HORNER J, JONES Bw, MUKAI T, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 398, 4, 1715, 1729,   2009年10月, 査読有り
    概要:We present the results of detailed dynamical simulations of the effect of the migration of the four giant planets on both the transport of pre-formed Neptune Trojans and the capture of new Trojans from a trans-Neptunian disc. The cloud of pre-formed Trojans consisted of thousands of massless particles placed on dynamically cold orbits around Neptune's L4 and L5 Lagrange points, while the trans-Neptunian disc contained tens of thousands of such particles spread on dynamically cold orbits between the initial and final locations of Neptune. Through the comparison of the results with the previous work on the known Neptunian Trojans, we find that scenarios involving the slow migration of Neptune over a large distance (50 Myr to migrate from 18.1 au to its current location, using an exponential-folding time of τ = 10 Myr) provide the best match to the properties of the known Trojans. Scenarios with faster migration (5 Myr, with τ = 1 Myr), and those in which Neptune migrates from 23.1 au to its current location, fail to adequately reproduce the current-day Trojan population. Scenarios which avoid disruptive perturbation events between Uranus and Neptune fail to yield any significant excitation of pre-formed Trojans (transported with efficiencies between 30 and 98 per cent whilst maintaining the dynamically cold nature of these objects - e < 0.1, i < 5°). Conversely, scenarios with periods of strong Uranus-Neptune perturbation lead to the almost complete loss of such pre-formed objects. In these cases, a small fraction (?0.15 per cent) of these escaped objects are later recaptured as Trojans prior to the end of migration, with a wide range of eccentricities (<0.35) and inclinations (<40°). In all scenarios (including those with such disruptive interaction between Uranus and Neptune), the capture of objects from the trans-Neptunian disc (through which Neptune migrates) is achieved with efficiencies between ?0.1 and ?1 per cent. The captured Trojans display a wide range of inclinations (<40° for slow migration, and <20° for rapid migration) and eccentricities (<0.35), and we conclude that, given the vast amount of material which undoubtedly formed beyond the orbit of Neptune, such captured objects may be sufficient to explain the entire Neptune Trojan population. ? 2009 RAS.
  • An outer planet beyond Pluto and the origin of the trans-Neptunian belt architecture, Lykawka Patryk S, Mukai Tadashi, The Astronomical Journal, The Astronomical Journal, 135, 4, 1161, 1200,   2008年04月, 査読有り
    概要:Trans-Neptunian objects (TNOs) are remnants of a collisionally and dynamically evolved planetesimal disk in the outer solar system. This complex structure, known as the trans-Neptunian belt (or Edgeworth-Kuiper belt), can reveal important clues about disk properties, planet formation, and other evolutionary processes. In contrast to the predictions of accretion theory, TNOs exhibit surprisingly large eccentricities, e, and inclinations, i, which can be grouped into distinct dynamical classes. Several models have addressed the origin and orbital evolution of TNOs, but none have reproduced de...

書籍等出版物

  • 太陽系に未知の「惑星X」が存在する! (講談社+α新書), ソフィア・パトリック・リカフィカ, 向井 正, 講談社,   2008年12月19日, 4062725452
  • 講談社プラスアルファ新書, 太陽系に未知の「惑星X」が存在する!, 向井 正, パトリック ソフィア リカフィカ, 共著, 講談社,   2008年12月

講演・口頭発表等

  • Terrestrial Planet Formation During the Migration and Resonance Crossings of the Giant Planets (講演) [in Japanese], パトリック ソフィア リカフィカ, Takashi Ito, 第46回 月・惑星シンポジウムプログラム,   2013年08月, 第46回 月・惑星シンポジウムプログラム
  • Trans-Neptunian Objects as Natural Probes to the Unknown Solar System (招待講演), パトリック ソフィア リカフィカ, 44th American Astronomical Society/Division on Dynamical Astronomy (DDA) Meeting,   2013年05月, 44th American Astronomical Society/Division on Dynamical Astronomy (DDA) Meeting
    概要:Invited Speaker (招待講演)
  • Trans-Neptunian Objects as Natural Probes to the Unknown Solar System, パトリック ソフィア リカフィカ, 44th American Astronomical Society/Division on Dynamical Astronomy (DDA) Meeting,   2013年, 44th American Astronomical Society/Division on Dynamical Astronomy (DDA) Meeting
  • On the orbital (in)stability of Trojan asteroids in the solar system (講演) [in Japanese], パトリック ソフィア リカフィカ, Jonathan Horner, Thomas Mueller, “Towards New Explorations of Solar System Small Bodies” Research Meeting,   2012年11月, “Towards New Explorations of Solar System Small Bodies” Research Meeting
    概要:太陽系におけるトロヤ群天体の軌道安定性について
  • Terrestrial Planet Formation During the Migration and Resonance Crossings of the Giant Planets (講演) [in Japanese], パトリック ソフィア リカフィカ, Takashi Ito, Japanese Society for Planetary Sciences Fall Meeting,   2012年10月, Japanese Society for Planetary Sciences Fall Meeting
  • 初期太陽系における巨大惑星のトロヤ群天体の捕獲と解放 (講演), パトリック ソフィア リカフィカ, Jonathan Horner, Astronomical Society of Japan Fall Meeting 2012,   2012年09月, Astronomical Society of Japan Fall Meeting 2012
  • The capture and release of Trojan asteroids by the giant planets during the solar system history (講演) [in English], パトリック ソフィア リカフィカ, Jonathan Horner, Japan Geoscience Union Meeting 2012,   2012年05月, Japan Geoscience Union Meeting 2012
  • Dynamical Evolution of Haumea Collisional Family and Implications for the Outer Solar System, パトリック ソフィア リカフィカ, Jonathan Horner, Tadashi Mukai, Akiko M. Nakamura, Asteroids, Comets, Meteors 2012,   2012年05月, Asteroids, Comets, Meteors 2012
  • The capture and release of Trojan asteroids by the giant planets during the solar system history, パトリック ソフィア リカフィカ, Jonathan Horner, Astronomical Society of Japan Fall Meeting 2012,   2012年, Astronomical Society of Japan Fall Meeting 2012
  • Terrestrial Planet Formation During the Migration and Resonance Crossings of the Giant Planets, パトリック ソフィア リカフィカ, Takashi Ito, Japanese Society for Planetary Sciences Meeting 2012,   2012年, Japanese Society for Planetary Sciences Meeting 2012
  • On the orbital (in)stability of Trojan asteroids in the solar system, パトリック ソフィア リカフィカ, Jonathan Horner, Thomas Mueller, “Towards New Explorations of Solar System Small Bodies” Research Meeting,   2012年, “Towards New Explorations of Solar System Small Bodies” Research Meeting
  • Dynamical Evolution of Haumea Collisional Family and Implications for the Outer Solar System, パトリック ソフィア リカフィカ, Jonathan Horner, Tadashi Mukai, Akiko M. Nakamura, Asteroids, Comets, Meteors 2012,   2012年, Asteroids, Comets, Meteors 2012
  • The capture and release of Trojan asteroids by the giant planets during the solar system history, パトリック ソフィア リカフィカ, Jonathan Horner, EPSC-DPS Planetary Sciences Joint Meeting,   2011年10月, EPSC-DPS Planetary Sciences Joint Meeting
  • Dynamical evolution of Haumea collisional family: Clues on the collision physics, new family members and implications for the outer solar system, パトリック ソフィア リカフィカ, Jonathan Horner, Akiko M. Nakamura, Tadashi Mukai, EPSC-DPS Planetary Sciences Joint Meeting,   2011年10月, EPSC-DPS Planetary Sciences Joint Meeting
  • 準惑星ハウメア衝突族の軌道進化: カイパーベルトの歴史への影響 (講演②), パトリック ソフィア リカフィカ, Jonathan Horner, Akiko M. Nakamura, Tadashi Mukai, Japan Geoscience Union Meeting 2011,   2011年05月, Japan Geoscience Union Meeting 2011
  • Trojan Asteroids and the Early Evolution of the Solar System (講演①) [in English], パトリック ソフィア リカフィカ, Jonathan Horner, Barrie W. Jones, Tadashi Mukai, Japan Geoscience Union Meeting 2011,   2011年05月, Japan Geoscience Union Meeting 2011
  • Trojan asteroids and the early evolution of the solar system (講演) [in English], パトリック ソフィア リカフィカ, Jonathan Horner, Barrie Jones, Tadashi Mukai, The International Symposium on Planetary Science 2011,   2011年03月, The International Symposium on Planetary Science 2011
  • Dynamical evolution of dwarf planet (136108) Haumea collisional family: General properties and implications for the trans-neptunian belt, パトリック ソフィア リカフィカ, Jonathan Horner, Akiko M. Nakamura, Tadashi Mukai, The International Symposium on Planetary Science 2011,   2011年03月, The International Symposium on Planetary Science 2011
  • Trojan objects and the origin and evolution of the solar system, パトリック ソフィア リカフィカ, Jonathan Horner, Barrie Jones, Tadashi Mukai, Astronomical Society of Japan Spring Meeting 2011,   2011年, Astronomical Society of Japan Spring Meeting 2011
    概要:* The conference was cancelled due to the Kanto-Tohoku earthquake. However, the bulleting containing the abstracts was published by the Society.
  • Trojan Asteroids and the Early Evolution of the Solar System, パトリック ソフィア リカフィカ, Jonathan Horner, Akiko M. Nakamura, Tadashi Mukai, Center for Computational Astrophysics (CfCA) users’ meeting,   2011年01月, Center for Computational Astrophysics (CfCA) users’ meeting
  • The capture and release of Trojan asteroids by the giant planets during the solar system history, パトリック ソフィア リカフィカ, Jonathan Horner, EPSC-DPS Planetary Sciences Joint Meeting,   2011年, EPSC-DPS Planetary Sciences Joint Meeting
  • Dynamical evolution of the Haumean family: Effects and implications in the Edgeworth-Kuiper belt, パトリック ソフィア リカフィカ, Jonathan Horner, Akiko M. Nakamura, Tadashi Mukai, Astronomical Society of Japan Spring Meeting 2011,   2011年, Astronomical Society of Japan Spring Meeting 2011
    概要:* The conference was cancelled due to the Kanto-Tohoku earthquake. However, the bulleting containing the abstracts was published by the Society.
  • Dynamical evolution of Haumea collisional family: Clues on the collision physics, new family members and implications for the outer solar system, パトリック ソフィア リカフィカ, Jonathan Horner, Akiko M. Nakamura, Tadashi Mukai, EPSC-DPS Planetary Sciences Joint Meeting,   2011年, EPSC-DPS Planetary Sciences Joint Meeting
  • 準惑星ハウメア衝突族の軌道進化: 一般的な特徴と太陽系外縁帯への影響, パトリック ソフィア リカフィカ, Jonathan Horner, Akiko M. Nakamura, Tadashi Mukai, 7th Primordial Bodies Research Meeting,   2010年12月, 7th Primordial Bodies Research Meeting
  • トロヤ群天体と太陽系の初期軌道進化, パトリック ソフィア リカフィカ, Jonathan Horner, Barrie W. Jones, Tadashi Mukai, 7th Primordial Bodies Research Meeting,   2010年12月, 7th Primordial Bodies Research Meeting
  • Trojan Asteroids and the Early Evolution of the Solar System, パトリック ソフィア リカフィカ, Jonathan Horner, Barrie W. Jones, Tadashi Mukai, 42nd Division for Planetary Sciences (DPS) Meeting,   2010年10月, 42nd Division for Planetary Sciences (DPS) Meeting
  • Trojan Asteroids and the Early Evolution of the Giant Planets, パトリック ソフィア リカフィカ, Jonathan Horner, Barrie W. Jones, Tadashi Mukai, Asia Oceania Geosciences Society (AOGS) Meeting 2010,   2010年08月, Asia Oceania Geosciences Society (AOGS) Meeting 2010
  • Trojan Asteroids and the Early Evolution of the Solar System, パトリック ソフィア リカフィカ, Jonathan Horner, Barrie W. Jones, Tadashi Mukai, 42nd Division for Planetary Sciences (DPS) Meeting,   2010年, 42nd Division for Planetary Sciences (DPS) Meeting
  • Origin and dynamical evolution of Haumea’s collisional family in the Kuiper belt [in Japanese], パトリック ソフィア リカフィカ, Jonathan Horner, Akiko M. Nakamura, Tadashi Mukai, Center for Computational Astrophysics (CfCA) users’ meeting,   2010年01月, Center for Computational Astrophysics (CfCA) users’ meeting
  • Origin and Dynamical Evolution of Neptune Trojans [in Japanese], パトリック ソフィア リカフィカ, Jonathan Horner, Barrie W. Jones, Tadashi Mukai, 5th Primordial Bodies Research Meeting,   2009年12月, 5th Primordial Bodies Research Meeting
  • Origin and Dynamical Evolution of Neptune Trojans, パトリック ソフィア リカフィカ, Jonathan Horner, Barrie W. Jones, Tadashi Mukai, Asia Oceania Geosciences Society (AOGS) Meeting 2009,   2009年08月, Asia Oceania Geosciences Society (AOGS) Meeting 2009
  • Origin and Dynamical Evolution of Neptune Trojans, パトリック ソフィア リカフィカ, Jonathan Horner, Barrie W. Jones, Tadashi Mukai, CPS International School of Planetary Sciences,   2009年01月, CPS International School of Planetary Sciences
  • Long-term dynamical evolution of Haumea’s collisional family in the Kuiper belt [in Japanese], パトリック ソフィア リカフィカ, Jonathan Horner, Akiko M. Nakamura, Tadashi Mukai, Rironkon Symposium (Theoretical Astronomy) 2008,   2008年12月, Rironkon Symposium (Theoretical Astronomy) 2008
  • Origin and Dynamical Evolution of Neptune Trojans (講演①) [in Japanese], パトリック ソフィア リカフィカ, Jonathan Horner, Barrie W. Jones, Tadashi Mukai, Japanese Society for Planetary Sciences Fall Meeting,   2008年10月, Japanese Society for Planetary Sciences Fall Meeting
  • Long-term evolution of trans-Neptunian objects: Effects of multiple temporary captures in mean motion resonances (講演②) [in Japanese], パトリック ソフィア リカフィカ, Tadashi Mukai, Japanese Society for Planetary Sciences Fall Meeting,   2008年10月, Japanese Society for Planetary Sciences Fall Meeting
  • Origin of the Edgeworth-Kuiper Belt Architecture: Evidence of Dynamical Sculpting by an Outer Planet (講演①), パトリック ソフィア リカフィカ, Tadashi Mukai, Asteroids, Comets, Meteors 2008,   2008年07月, Asteroids, Comets, Meteors 2008
  • Origin and Dynamical Evolution of Neptune Trojans (講演②), パトリック ソフィア リカフィカ, Jonathan Horner, Tadashi Mukai, Barrie W. Jones, Asteroids, Comets, Meteors 2008,   2008年07月, Asteroids, Comets, Meteors 2008
  • Long-Term Dynamical Evolution of Trans-Neptunian Objects in the Scattered Disk (講演③), パトリック ソフィア リカフィカ, Tadashi Mukai, Asteroids, Comets, Meteors 2008,   2008年07月, Asteroids, Comets, Meteors 2008
  • Long-term Dynamical Evolution of Trans-Neptunian Objects in Scattered Orbits (講演②), パトリック ソフィア リカフィカ, Tadashi Mukai, Asia Oceania Geosciences Society (AOGS) Meeting 2008,   2008年06月, Asia Oceania Geosciences Society (AOGS) Meeting 2008
  • Dynamical Classification of Trans-Neptunian Objects: New Clues on the Origin and Evolution of the Outer Solar System (講演①), パトリック ソフィア リカフィカ, Tadashi Mukai, Asia Oceania Geosciences Society (AOGS) Meeting 2008,   2008年06月, Asia Oceania Geosciences Society (AOGS) Meeting 2008
  • Long-term evolution of trans-Neptunian objects: Effects of multiple temporary captures in mean motion resonances [in Japanese], パトリック ソフィア リカフィカ, Tadashi Mukai, Japan Geosciences Union Meeting 2008,   2008年05月, Japan Geosciences Union Meeting 2008
  • Origin of the Edgeworth-Kuiper Belt Architecture: Evidence of Dynamical Sculpting by an Outer Planet, パトリック ソフィア リカフィカ, Tadashi Mukai, Asteroids, Comets, Meteors 2008,   2008年, Asteroids, Comets, Meteors 2008
  • Origin and dynamical evolution of Neptune Trojans, パトリック ソフィア リカフィカ, Jonathan Horner, Tadashi Mukai, Barrie Jones, Japanese Society for Planetary Sciences Meeting 2008,   2008年, Japanese Society for Planetary Sciences Meeting 2008
  • Origin and Dynamical Evolution of Neptune Trojans, パトリック ソフィア リカフィカ, Jonathan Horner, Tadashi Mukai, Barrie W. Jones, Asteroids, Comets, Meteors 2008,   2008年, Asteroids, Comets, Meteors 2008
  • Long-Term Dynamical Evolution of Trans-Neptunian Objects in the Scattered Disk, パトリック ソフィア リカフィカ, Tadashi Mukai, Asteroids, Comets, Meteors 2008,   2008年, Asteroids, Comets, Meteors 2008
  • Impact Cratering Experiments to Targets with Cavity: Application to Cave Skylight on Mars, Tatsuhiro Michikami, パトリック ソフィア リカフィカ, S. Miura, J. Haruyama, 39th Lunar and Planetary Science Conference,   2008年, 39th Lunar and Planetary Science Conference
  • Trans-Neptunian belt architecture: Evidence for a distant planet in the solar system, パトリック ソフィア リカフィカ, Tadashi Mukai, Japanese Society for Planetary Sciences Meeting 2007,   2007年, Japanese Society for Planetary Sciences Meeting 2007
  • Trans-Neptunian Region Architecture: Evidence for a Planet Beyond Pluto (講演②), パトリック ソフィア リカフィカ, Tadashi Mukai, Japan Geosciences Union Meeting 2007,   2007年, Japan Geosciences Union Meeting 2007
  • Trans-Neptunian Region Architecture: Evidence for a Planet Beyond Pluto (講演①), パトリック ソフィア リカフィカ, Tadashi Mukai, Asia Oceania Geosciences Society (AOGS) Meeting 2007,   2007年, Asia Oceania Geosciences Society (AOGS) Meeting 2007
  • Trans-Neptunian Belt Architecture: Evidence for a Distant Planet in the Solar System (講演①) [in Japanese], パトリック ソフィア リカフィカ, Tadashi Mukai, Japanese Society for Planetary Sciences Fall Meeting,   2007年, Japanese Society for Planetary Sciences Fall Meeting
  • Origin of scattered disk resonant TNOs: Evidence for an ancient excited Kuiper belt of 50AU radius, パトリック ソフィア リカフィカ, Tadashi Mukai, Japanese Society for Planetary Sciences Meeting 2007,   2007年, Japanese Society for Planetary Sciences Meeting 2007
  • Origin of Scattered Disk Resonant TNOs: Evidence for an Ancient Excited Kuiper Belt of 50AU Radius (講演②) [in Japanese], パトリック ソフィア リカフィカ, Tadashi Mukai, Japanese Society for Planetary Sciences Fall Meeting,   2007年, Japanese Society for Planetary Sciences Fall Meeting
  • Origin of Scattered Disk Resonant TNOs: Evidence for an Ancient Excited Kuiper Belt of 50AU Radius (講演②), パトリック ソフィア リカフィカ, Tadashi Mukai, Asia Oceania Geosciences Society (AOGS) Meeting 2007,   2007年, Asia Oceania Geosciences Society (AOGS) Meeting 2007
  • Origin of Scattered Disk Resonant TNOs: Evidence for an Ancient Excited Kuiper Belt of 50AU Radius (講演①), パトリック ソフィア リカフィカ, Tadashi Mukai, Japan Geosciences Union Meeting 2007,   2007年, Japan Geosciences Union Meeting 2007
  • Long-term evolution and resonance sticking of scattered disk objects (講演②), パトリック ソフィア リカフィカ, Tadashi Mukai, European Planetary Science Congress 2007,   2007年, European Planetary Science Congress 2007
  • An outer planet beyond Pluto and the origin of Kuiper belt architecture (講演①), パトリック ソフィア リカフィカ, Tadashi Mukai, European Planetary Science Congress 2007,   2007年, European Planetary Science Congress 2007
  • An outer planet and the origin of Kuiper Belt architecture, パトリック ソフィア リカフィカ, Tadashi Mukai, Kobe International School of Planetary Sciences,   2007年, Kobe International School of Planetary Sciences
  • A Distant Massive Planet Beyond Pluto and Origin of Kuiper Belt Architecture, パトリック ソフィア リカフィカ, Tadashi Mukai, 39th Division for Planetary Sciences (DPS) Meeting,   2007年, 39th Division for Planetary Sciences (DPS) Meeting
  • A Distant Massive Planet Beyond Pluto and Origin of Kuiper Belt Architecture, パトリック ソフィア リカフィカ, Tadashi Mukai, 42nd Division for Planetary Sciences (DPS) Meeting,   2007年, 42nd Division for Planetary Sciences (DPS) Meeting
  • Trans-Neptunian Region Architecture: Evidence for a Planet Beyond Pluto, パトリック ソフィア リカフィカ, Tadashi Mukai, Kobe International School of Planetary Sciences,   2006年, Kobe International School of Planetary Sciences
  • The transneptunian region architecture: a formation scenario, パトリック ソフィア リカフィカ, Tadashi Mukai, Workshop Trans-Neptunian Objects: Dynamical and Physical properties,   2006年, Workshop Trans-Neptunian Objects: Dynamical and Physical properties
  • Resonance occupancy in the transneptunian region: dynamical properties and implications, パトリック ソフィア リカフィカ, Tadashi Mukai, XVIIIth Rencontres de Blois Planetary Science: challenges and discoveries,   2006年, XVIIIth Rencontres de Blois Planetary Science: challenges and discoveries
  • Origin of Resonant TNOs: Evidence for an Ancient Excited Kuiper Belt of 50AU Radius, パトリック ソフィア リカフィカ, Tadashi Mukai, American Geophysical Union, Fall Meeting 2006,   2006年, American Geophysical Union, Fall Meeting 2006
  • Origin of Resonant TNOs: Evidence for an Ancient Excited Kuiper Belt of 50AU Radius, パトリック ソフィア リカフィカ, Tadashi Mukai, American Geophysical Union (AGU) Fall Meeting,   2006年, American Geophysical Union (AGU) Fall Meeting
  • Origin and evolution of the trans-Neptunian region (招待講演) [in English], パトリック ソフィア リカフィカ, Tadashi Mukai, 2nd COE Symposium: Cross Talk between Chemistry and Planetary Sciences,   2006年, 2nd COE Symposium: Cross Talk between Chemistry and Planetary Sciences
  • The transneptunian region architecture: revelations from observations and theoretical results, パトリック ソフィア リカフィカ, Tadashi Mukai, Kobe International School of Planetary Sciences,   2005年, Kobe International School of Planetary Sciences
  • Dynamical structure and physical properties of classical transneptunian objects, パトリック ソフィア リカフィカ, Tadashi Mukai, Asteroids, Comets, Meteors 2005,   2005年, Asteroids, Comets, Meteors 2005
  • Exploring the 7:4 mean motion resonance and dynamical evolution of transneptunian objects, パトリック ソフィア リカフィカ, Tadashi Mukai, Asia Oceania Geosciences Society (AOGS) Meeting 2004,   2004年, Asia Oceania Geosciences Society (AOGS) Meeting 2004
  • Exploring evolutionary paths and resonance sticking of scattered transneptunian objects, パトリック ソフィア リカフィカ, Tadashi Mukai, 36th Division for Planetary Sciences (DPS) Meeting,   2004年, 36th Division for Planetary Sciences (DPS) Meeting
  • Dynamical structures in the classical transneptunian belt and scattered region, パトリック ソフィア リカフィカ, Tadashi Mukai, Transneptunian Objects - 10 years since first observation Workshop,   2004年, Transneptunian Objects - 10 years since first observation Workshop
  • The 7:4 mean motion resonance and dynamical structures in the classical transneptunian belt, パトリック ソフィア リカフィカ, Tadashi Mukai, 36th ISAS Lunar and Planetary Symposium,   2003年, 36th ISAS Lunar and Planetary Symposium
  • Solar Perturbation Forces on Small Body in Early Solar System, Tadashi Mukai, パトリック ソフィア リカフィカ, Abu Md. Saklayen, Arika Higuchi, Natsuki Tomita, Japanese Society for Planetary Sciences Meeting 2002,   2003年, Japanese Society for Planetary Sciences Meeting 2002
  • Perturbation Forces on Small Asteroids, Abu Md. Saklayen, パトリック ソフィア リカフィカ, Arika Higuchi, Natsuki Tomita, Tadashi Mukai, 35th ISAS Lunar and Planetary Symposium,   2002年, 35th ISAS Lunar and Planetary Symposium

MISC

  • OSSOS XVIII: Constraining migration models with the 2:1 resonance using the Outer Solar System Origins Survey, Ying-Tung Chen, Brett Gladman, Kathryn Volk, Ruth Murray-Clay, Matthew J. Lehner, J. J. Kavelaars, Shiang-Yu Wang, Hsing-Wen Lin, Patryk Sofia Lykawka, Mike Alexandersen, Michele T. Bannister, Samantha M. Lawler, Rebekah I. Dawson, Sarah Greenstreet, Stephen D. J. Gwyn, Jean-Marc Petit,   2019年10月29日, http://arxiv.org/abs/1910.12985v2
    概要:Resonant dynamics plays a significant role in the past evolution and current
    state of our outer Solar System. The population ratios and spatial distribution
    of Neptune's resonant populations are direct clues to understanding the history
    of our planetary system. The orbital structure of the objects in Neptune's 2:1
    mean-motion resonance (\emph{twotinos}) has the potential to be a tracer of
    planetary migration processes. Different migration processes produce distinct
    architectures, recognizable by well-characterized surveys. However, previous
    characterized surveys only discovered a few twotinos, making it impossible to
    model the intrinsic twotino population. With a well-designed cadence and nearly
    100\% tracking success, the Outer Solar System Origins Survey (OSSOS)
    discovered 838 trans-Neptunian objects, of which 34 are securely twotinos with
    well-constrained libration angles and amplitudes. We use the OSSOS twotinos and
    the survey characterization parameters via the OSSOS Survey Simulator to
    inspect the intrinsic population and orbital distributions of twotino. The
    estimated twotino population, 4400$^{+1500}_{-1100}$ with $H_r<8.66$
    (diameter$\sim$100km) at 95\% confidence, is consistent with the previous
    low-precision estimate. We also constrain the width of the inclination
    distribution to a relatively narrow value of $\sigma_i$=6$^\circ$$^{+1}_{-1}$,
    and find the eccentricity distribution is consistent with a Gaussian centered
    on $e_\mathrm{c}=0.275$ with a width $e_\mathrm{w}=0.06$. We find a
    single-slope exponential luminosity function with $\alpha=0.6$ for the
    twotinos. Finally, we for the first time meaningfully constrain the fraction of
    symmetric twotinos, and the ratio of the leading asymmetric islands; both
    fractions are in a range of 0.2--0.6. These measurements rule out certain
    theoretical models of Neptune's migration history.
  • Colors of Centaurs observed by the Subaru/Hyper Suprime‐Cam and implications for their origin, SAKUGAWA Haruka, SAKUGAWA Haruka, TERAI Tsuyoshi, OHTSUKI Keiji, YOSHIDA Fumi, TAKATO Naruhisa, LYKAWKA Patryk Sofia, WANG Shiang‐Yu, Publications of the Astronomical Society of Japan, 70, 6, 116.1‐116.11,   2018年, https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201902266830274060
  • Multi-band Photometry of Trans-Neptunian Objects in the Subaru Hyper Suprime-Cam Survey, TERAI Tsuyoshi, YOSHIDA Fumi, YOSHIDA Fumi, OHTSUKI Keiji, LYKAWKA Patryk Sofia, TAKATO Naruhisa, HIGUCHI Arika, ITO Takashi, 日本地球惑星科学連合大会予稿集(Web), 2018, ROMBUNNO.PPS03‐P01 (WEB ONLY),   2018年, http://jglobal.jst.go.jp/public/201802256628339476
  • Multi-band photometry of trans-Neptunian objects in the Subaru Hyper Suprime-Cam survey, TERAI Tsuyoshi, YOSHIDA Fumi, YOSHIDA Fumi, OHTSUKI Keiji, LYKAWKA Patryk Sofia, TAKATO Naruhisa, HIGUCHI Arika, ITO Takashi, KOMIYAMA Yutaka, KOMIYAMA Yutaka, MIYAZAKI Satoshi, MIYAZAKI Satoshi, WANG Shiang‐Yu, Publications of the Astronomical Society of Japan, 70, SP1, S40.1‐S40.15,   2018年, http://jglobal.jst.go.jp/public/201802265988668760
  • Terrestrial Planet Formation: Constraining the Formation of Mercury, SOFIA LYKAWKA Patryk, ITO Takashi, 日本地球惑星科学連合大会予稿集(Web), 2017, ROMBUNNO.PPS07‐17 (WEB ONLY),   2017年, http://jglobal.jst.go.jp/public/201802270687369450
  • Terrestrial Planet Formation: Delivery of Water to Mercury and Venus, LYKAWKA Patryk Sofia, ITO Takashi, 日本地球惑星科学連合大会予稿集(Web), 2017, ROMBUNNO.MIS26‐P05 (WEB ONLY),   2017年, http://jglobal.jst.go.jp/public/201802284667125834
  • ソーラー電力セイルによる木星トロヤ群小惑星探査, 中村良介, 森治, 矢野創, 岩田隆浩, 岡田達明, 松浦周二, 癸生川陽子, 青木順, 臼井文彦, 木下大輔, リカフィカ パトリック, 津村耕司, 日本天文学会年会講演予稿集, 2015, 156,   2015年08月20日, http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201502200202855147
  • 木星トロヤ群小惑星探査:太陽系最後のフロンティアを目指して, 癸生川 陽子, 臼井 文彦, 木下 大輔, パトリック リカフィカ, 吉田 二美, 中村 良介, 青木 順, 矢野 創, 岡田 達明, 森 治, 岩田 隆浩, 松浦 周二, 津村 耕司, 日本地球化学会年会要旨集, 62, 0, 227, 227,   2015年, 10.14862/geochemproc.62.0_227, http://ci.nii.ac.jp/naid/130005492184
    概要:木星のラグランジュ点付近に存在するトロヤ群小惑星の起源は、よくわかっていない。我々は(1)種々の氷・含水鉱物・有機物が特徴的な吸収を持つ赤外域(とくに2500$\sim$5000 nmの波長域)でトロヤ群小惑星のイメージング分光を行う母機(2)小惑星表面に降り立ち揮発性の高い炭素・水素・窒素・酸素などの同位体比をその場測定する子機、から成るソーラー電力セイル探査機の検討をすすめている。2020年代に打ち上げるために進行中の、ミッション設計・探査候補天体のサーベイ・搭載機器開発について報告する。
  • 2004 KV18 - A visitor from the Scattered Disk to the Neptune Trojan population, Jonathan Horner, Patryk Sofia Lykawka,   2012年07月12日, http://arxiv.org/abs/1207.2925v2
    概要:We have performed a detailed dynamical study of the recently identified
    Neptunian Trojan 2004 KV18, only the second object to be discovered librating
    around Neptune's trailing Lagrange point, L5. We find that 2004 KV18 is moving
    on a highly unstable orbit, and was most likely captured from the Centaur
    population at some point in the last ~1 Myr, having originated in the Scattered
    Disk, beyond the orbit of Neptune. The instability of 2004 KV18 is so great
    that many of the test particles studied leave the Neptunian Trojan cloud within
    just ~0.1 - 0.3 Myr, and it takes just 37 million years for half of the 91125
    test particles created to study its dynamical behaviour to be removed from the
    Solar system entirely. Unlike the other Neptunian Trojans previously found to
    display dynamical instability on hundred million year timescales (2001 QR322
    and 2008 LC18), 2004 KV18 displays such extreme instability that it must be a
    temporarily captured Trojan, rather than a primordial member of the Neptunian
    Trojan population. As such, it offers a fascinating insight into the processes
    through which small bodies are transferred around the outer Solar system, and
    represents an exciting addition to the menagerie of the Solar system's small
    bodies.
  • Origin of Scattered Disk Resonant TNOs: Evidence for an Ancient Excited Kuiper Belt of 50AU Radius, LYKAWKA Patryk Sofia, MUKAI Tadashi, 日本惑星科学会秋季講演会予稿集, 2007, 113,   2007年, 10.14909/jsps.2007f.0.113.0, http://jglobal.jst.go.jp/public/200902220331594905

受賞

  • https://sites.google.com/site/patryksofialykawka/database/Patryk-CV_J.pdf

競争的資金

  • https://sites.google.com/site/patryksofialykawka/database/Patryk-CV_J.pdf, Please see my CV for the details

その他

  •   2016年04月, 水星・金星・地球・火星の形成と水の起源の解明, 近畿大学学内研究助成金 奨励研究助成金 SR07 研究課題「水星・金星・地球・火星の形成と水の起源の解明」の研究報告書。詳細はKURepo参照。

教育活動情報

担当経験のある科目

  • https://sites.google.com/site/patryksofialykawka/database/Patryk-CV_J.pdf, 近畿大学