太陽系外地球型惑星の高層大気観測に向けた高感度紫外線検出器の開発

2021 Fiscal Year Annual Research Report

• Project/Area Number: 19H00727
• Research Institution: Rikkyo University
• Principal Investigator: 亀田 真吾 立教大学, 理学部, 教授 (30455464)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 系外惑星 / 紫外線 / 検出器

Outline of Annual Research Achievements

惑星を持つ恒星について、紫外線輻射の代表値であるライマンα線強度とその変動を捉え、紫外線宇宙望遠鏡による高層大気観測と地上望遠鏡による大気観測を合わせて海洋の存否を中心として惑星大気・気候を明らかにすることを目的とし、紫外線検出器の開発を進めた。系外惑星系の紫外線輻射量は現時点でもほとんど計測されていない状況は2021年度の時点でも変わらないままであり、一方で、さらに多くの系外惑星が発見され続けている。本年度の活動により、昨年度のうちにロシアの1.7m紫外線宇宙望遠鏡WSO-UVに日本から高感度分光器UVSPEXの提供を検討するためJAXA内にプリプロジェクトが立ち上げられ、本年度にはJAXA部門内プロジェクトとして承認された。本研究代表者はプロジェクトマネージャとして計画を進めることとなった。本年度はUVSPEXの基本設計を進め、11月に基本設計審査を完了し、試作機（Engineering Model)の製造を開始した。さらに、2040年代に打ち上げが想定される6m宇宙望遠鏡計画への参加に向けて、大型MCPと高分散分光器の検討を進めた。また、超小型深宇宙探査機プロキオンに搭載した紫外線カメラLAICAの検出器・読み出し回路の改良品の性能試験を実施し、放射線試験を完了した。結果として、同設計のまま宇宙での使用に耐えられることを確認した。研究開始当初の想定より大幅に計画が進んだが、2022年2月の情勢から、WSO-UVへの装置提供は輸出規制のために不可となっており、実現性については不透明な状況となった。既に部品は購入済みの状況であるため、将来計画に向けて分光器の性能試験を行うため、完成に向けた設計作業は継続した。

Research Progress Status

令和3年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和3年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth (2022)
  • Author(s): Tachibana S.、Sawada H.、Okazaki R.、Takano Y.、Sakamoto K.、Miura Y. N.、Okamoto C.、Yano H.、Yamanouchi S.、Michel P.、(略) Kameda S.他
  • Journal Title: Science Volume: 375 Pages: 1011～1016
  • DOI: 10.1126/science.abj8624
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Comparative Na and K Mercury and Moon Exospheres (2022)
  • Author(s): Leblanc F.、Schmidt C.、Mangano V.、Mura A.、Cremonese G.、Raines J. M.、Jasinski J. M.、Sarantos M.、Milillo A.、Killen R. M.、Massetti S.、Cassidy T.、Vervack R. J.、Kameda S.、Capria M. T.、Horanyi M.、Janches D.、Berezhnoy A.、Christou A.、Hirai T.、Lierle P.、Morgenthaler J.
  • Journal Title: Space Science Reviews Volume: 218 Pages: -
  • DOI: 10.1007/s11214-022-00871-w
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Stray light analysis by ray tracing simulation for the wide-angle multiband camera OROCHI onboard the Martian Moons eXploration (MMX) spacecraft (2022)
  • Author(s): Fuse Ryota、Enya Keigo、Kameda Shingo、Kato Hiroki、Osada Naoya、Ishibashi Ko、Ozaki Masanobu、Sakatani Naoya、Kouyama Toru、Suzuki Hidehiko、Nakamura Tomoki、Miyamoto Hideaki、Abe Shinsuke、Goda Yuya、Murao Hajime
  • Journal Title: Advances in Space Research Volume: 69 Pages: 1236～1248
  • DOI: 10.1016/j.asr.2021.11.011
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] In situ science on Phobos with the Raman spectrometer for MMX (RAX): preliminary design and feasibility of Raman measurements (2021)
  • Author(s): Cho Yuichiro、Bottger Ute、Rull Fernando、Hubers Heinz-Wilhelm、Belenguer Tomas、Borner Anko、 Buder Maximilian、Bunduki Yuri、Dietz Enrico、Hagelschuer Till、Kameda Shingo他
  • Journal Title: Earth, Planets and Space Volume: 73 Pages: -
  • DOI: 10.1186/s40623-021-01496-z
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Science operation plan of Phobos and Deimos from the MMX spacecraft (2021)
  • Author(s): Nakamura Tomoki、Ikeda Hitoshi、Kouyama Toru、Nakagawa Hiromu、Kusano Hiroki、Senshu Hiroki、 Kameda Shingo他
  • Journal Title: Earth, Planets and Space Volume: 73 Pages: -
  • DOI: 10.1186/s40623-021-01546-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Design of telescopic nadir imager for geomorphology (TENGOO) and observation of surface reflectance by optical chromatic imager (OROCHI) for the Martian Moons Exploration (MMX) (2021)
  • Author(s): Kameda Shingo、Ozaki Masanobu、Enya Keigo、Fuse Ryota、Kouyama Toru、Sakatani Naoya、Suzuki Hidehiko、Osada Naoya、Kato Hiroki、Miyamoto Hideaki、Yamazaki Atsushi、Nakamura Tomoki他
  • Journal Title: Earth, Planets and Space Volume: 73 Pages: -
  • DOI: 10.1186/s40623-021-01462-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Surface environment of Phobos and Phobos simulant UTPS (2021)
  • Author(s): Miyamoto Hideaki、Niihara Takafumi、Wada Koji、Ogawa Kazunori、Senshu Hiroki、Michel Patrick、 Kikuchi Hiroshi、Hemmi Ryodo、Nakamura Tomoki、Nakamura Akiko M.、Hirata Naoyuki、Sasaki Sho、 Asphaug Erik、Britt Daniel T.、Abell Paul A.、Ballouz Ronald-Louis、Banouin Olivier S.(略)Kameda Shingo他
  • Journal Title: Earth, Planets and Space Volume: 73 Pages: -
  • DOI: 10.1186/s40623-021-01406-3
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] MIRS: an imaging spectrometer for the MMX mission (2021)
  • Author(s): Barucci Maria Antonietta、Reess Jean-Michel、Bernardi Pernelle、Doressoundiram Alain、 Fornasier Sonia、Le Du Michel、Iwata Takahiro、Nakagawa Hiromu、Nakamura Tomoki、Andre Yves、 Aoki Shohei、Arai Takehiko、Baldit Elisa、Beck Pierre、Buey Jean-Tristan、Canalias Elisabet、 (略)Kameda Shingo他
  • Journal Title: Earth, Planets and Space Volume: 73 Pages: -
  • DOI: 10.1186/s40623-021-01423-2
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Alignment determination of the Hayabusa2 laser altimeter (LIDAR) (2021)
  • Author(s): Noda Hirotomo、Senshu Hiroki、Matsumoto Koji、Namiki Noriyuki、Mizuno Takahide、Sugita Seiji、 Abe Shinsuke、Araki Hiroshi、Asari Kazuyoshi、Cho Yuichiro、Fujii Atsushi、Hayakawa Masahiko、 Higuchi Arika、Hirata Naoyuki、Hirata Naru、Honda Chikatoshi、Honda Rie、Ishihara Yoshiaki、 Kameda Shingo他
  • Journal Title: Earth, Planets and Space Volume: 73 Pages: -
  • DOI: 10.1186/s40623-020-01342-8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] High-resolution observations of bright boulders on asteroid Ryugu: 2. Spectral properties (2021)
  • Author(s): Sugimoto Chiho、Tatsumi Eri、Cho Yuichiro、Morota Tomokatsu、Humoto Koki、Kameda Shingo他
  • Journal Title: Icarus Volume: 369 Pages: 114591～114591
  • DOI: 10.1016/j.icarus.2021.114591
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] High-resolution observations of bright boulders on asteroid Ryugu: 1. Size frequency distribution and morphology (2021)
  • Author(s): Sugimoto Chiho、Tatsumi Eri、Cho Yuichiro、Morota Tomokatsu、Honda Rie、Kameda Shingo他
  • Journal Title: Icarus Volume: 369 Pages: 114529～114529
  • DOI: 10.1016/j.icarus.2021.114529
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Opposition Observations of 162173 Ryugu: Normal Albedo Map Highlights Variations in Regolith Characteristics (2021)
  • Author(s): Yokota Yasuhiro、Honda Rie、Tatsumi Eri、Domingue Deborah、Schroeder Stefan、Matsuoka Moe、 Morota Tomokatsu、Sakatani Naoya、Kameda Shingo他
  • Journal Title: The Planetary Science Journal Volume: 2 Pages: 177～177
  • DOI: 10.3847/PSJ/ac14ba
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spectrally blue hydrated parent body of asteroid (162173) Ryugu (2021)
  • Author(s): Tatsumi Eri、Sakatani Naoya、Riu Lucie、Matsuoka Moe、Honda Rie、Morota Tomokatsu、Kameda Shingo他
  • Journal Title: Nature Communications Volume: 12 Pages: -
  • DOI: 10.1038/s41467-021-26071-8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Hayabusa2 pinpoint touchdown near the artificial crater on Ryugu: Trajectory design and guidance performance (2021)
  • Author(s): Kikuchi Shota、Saiki Takanao、Takei Yuto、Terui Fuyuto、Ogawa Naoko、Mimasu Yuya、Ono Go、 Yoshikawa Kent、Sawada Hirotaka、Takeuchi Hiroshi、Ikeda Hitoshi、Fujii Atsushi、Sugita Seiji、Morota Tomokatsu、Yamada Manabu、Honda Rie、Yokota Yasuhiro、Sakatani Naoya、Kameda Shingo他
  • Journal Title: Advances in Space Research Volume: 68 Pages: 3093～3140
  • DOI: 10.1016/j.asr.2021.07.031
  • Peer Reviewed
• [Journal Article] Development of image texture analysis technique for boulder distribution measurements: Applications to asteroids Ryugu and Itokawa (2021)
  • Author(s): Tanabe Naoya、Cho Yuichiro、Tatsumi Eri、Ebihara Tatsuki、Yumoto Koki、Michikami Tatsuhiro、 Miyamoto Hideaki、Morota Tomokatsu、Honda Chikatoshi、Michel Patrick、Otto Katharina、Barnouin Olivier、Yoshioka Kazuo、Sawada Hirotaka、Yokota Yasuhiro、Sakatani Naoya、Hayakawa Masahiro、 Honda Rie、Kameda Shingo他
  • Journal Title: Planetary and Space Science Volume: 204 Pages: 105249～105249
  • DOI: 10.1016/j.pss.2021.105249
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Resurfacing processes on asteroid (162173) Ryugu caused by an artificial impact of Hayabusa2's Small Carry-on Impactor (2021)
  • Author(s): Honda Rie、Arakawa Masahiko、Shimaki Yuri、Shirai Kei、Yokota Yasuhiro、Kadono Toshihiko、Wada Koji、Ogawa Kazunori、Ishibashi Ko、Sakatani Naoya、Nakazawa Satoru、Yasui Minami、Morota Tomokatsu、Kameda Shingo他
  • Journal Title: Icarus Volume: 366 Pages: 114530～114530
  • DOI: 10.1016/j.icarus.2021.114530
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Geologic History and Crater Morphology of Asteroid (162173) Ryugu (2021)
  • Author(s): Cho Y.、Morota T.、Kanamaru M.、Takaki N.、Yumoto K.、Ernst C. M.、Hirabayashi M.、Barnouin O. S.、Tatsumi E.、Otto K. A.、Schmitz N.、Wagner R. J.、Jaumann R.、Miyamoto H.、Kikuchi H.、 Hemmi R.、Honda R.、Kameda S.他
  • Journal Title: Journal of Geophysical Research: Planets Volume: 126 Pages: -
  • DOI: 10.1029/2020JE006572
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Hayabusa2 extended mission: New voyage to rendezvous with a small asteroid rotating with a short period (2021)
  • Author(s): Hirabayashi M.、Mimasu Y.、Sakatani N.、Watanabe S.、Tsuda Y.、Saiki T.、Kikuchi S.、Kouyama T.、Yoshikawa M.、Tanaka S.、Nakazawa S.、Takei Y.、Terui F.、Takeuchi H.、Fujii A.、Iwata T.、Tsumura K.、Matsuura S.、Shimaki Y.、(略)Kameda S.他
  • Journal Title: Advances in Space Research Volume: 68 Pages: 1533～1555
  • DOI: 10.1016/j.asr.2021.03.030
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Anomalously porous boulders on (162173) Ryugu as primordial materials from its parent body (2021)
  • Author(s): Sakatani N.、Tanaka S.、Okada T.、Fukuhara T.、Riu L.、Sugita S.、Honda R.、Morota T.、Kameda S.他
  • Journal Title: Nature Astronomy Volume: 5 Pages: 766～774
  • DOI: 10.1038/s41550-021-01371-7
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Post-arrival calibration of Hayabusa2's optical navigation cameras (ONCs): Severe effects from touchdown events (2021)
  • Author(s): Kouyama Toru、Tatsumi Eri、Yokota Yasuhiro、Yumoto Koki、Yamada Manabu、Honda Rie、Kameda Shingo、Suzuki Hidehiko、Sakatani Naoya、Hayakawa Masahiko、Morota Tomokatsu、Matsuoka Moe、Cho Yuichiro、Honda Chikatoshi、Sawada Hirotaka、Yoshioka Kazuo、Sugita Seiji
  • Journal Title: Icarus Volume: 360 Pages: 114353～114353
  • DOI: 10.1016/j.icarus.2021.114353
  • Peer Reviewed
• [Journal Article] Improved method of hydrous mineral detection by latitudinal distribution of 0.7-μm surface reflectance absorption on the asteroid Ryugu (2021)
  • Author(s): Kameda Shingo、Yokota Yasuhiro、Kouyama Toru、Tatsumi Eri、Ishida Marika、Morota Tomokatsu、Honda Rie、Sakatani Naoya、Yamada Manabu、Matsuoka Moe、Suzuki Hidehiko、Cho Yuichiro、Hayakawa Masahiko、Honda Chikatoshi、Sawada Hirotaka、Yoshioka Kazuo、Ogawa Kazunori、Sugita Seiji
  • Journal Title: Icarus Volume: 360 Pages: 114348～114348
  • DOI: 10.1016/j.icarus.2021.114348
  • Peer Reviewed
• [Journal Article] Numerical modeling of lander interaction with a low-gravity asteroid regolith surface (2021)
  • Author(s): Thuillet Florian、Zhang Yun、Michel Patrick、Biele Jens、Kameda Shingo、Sugita Seiji、Tatsumi Eri、Schwartz Stephen R.、Ballouz Ronald-Louis
  • Journal Title: Astronomy & Astrophysics Volume: 648 Pages: A56～A56
  • DOI: 10.1051/0004-6361/201936128
  • Peer Reviewed / Int'l Joint Research
• [Presentation] 太陽系外地球型惑星大気観測に向けた国際紫外線天文衛星WSO-UV計画 (2022)
  • Author(s): 亀田真吾, 村上豪, 中山陽史, 平林賢人, 桑原正輝, 小玉貴則, 成田憲保, 生駒大洋, 寺田直樹, 塩谷圭吾
  • Organizer: 日本天文学会春季年会
• [Presentation] 紫外線宇宙望遠鏡WSO-UVによる系外惑星観測計画の現状 (2021)
  • Author(s): 亀田真吾, 村上豪, 中山陽史, 平林賢人, 桑原正輝, 小玉貴則, 成田憲保, 生駒大洋, 寺田直樹, 塩谷圭吾, Alexander Tavrov, Mikhail Sachkov, Andrey Shugarov, Oleg Korablev
  • Organizer: 日本惑星科学会秋季講演会
• [Presentation] Ultraviolet Spectrograph for Exoplanet (UVSPEX) onboard WSO-UV for Earth-like exoplanets (2021)
  • Author(s): S. Kameda, A. Tavrov, G. Murakami, A. Nakayama, T. Kodama, M. Kuwabara, M. Ikoma, N. Narita, N. Terada, K. Enya, M. Sachkov, A. Shugarov, O. Korablev
  • Organizer: The Twelfth Moscow Solar System Symposium
  • Int'l Joint Research
• [Presentation] UVSPEX onboard WSO-UV for characterization of Earth-like exoplanets by exosphere observation (2021)
  • Author(s): 亀田真吾, 村上豪, 中山陽史, 平林賢人, 桑原正輝, 小玉貴則, 成田憲保, 生駒大洋, 寺田直樹, 塩谷圭吾, Alexander Tavrov, Mikhail Sachkov, Andrey Shugarov, Oleg Korablev
  • Organizer: 地球電磁気・地球惑星圏学会講演会
• [Book] 太陽系と惑星 第２版 (2021)
  • Author(s): 渡部潤一、井田 茂、佐々木晶、略、亀田真吾 他
  • Total Pages: 336
  • Publisher: 日本評論社