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OHSAWA Ryou  大澤 亮

… Alternative Names

大澤 亮  オオサワ リョウ

Ohsawa Ryou  大澤 亮

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Researcher Number 40748696
Other IDs
  • ORCIDhttps://orcid.org/0000-0001-5797-6010
Affiliation (Current) 2025: 国立天文台, JASMINEプロジェクト, 助教
Affiliation (based on the past Project Information) *help 2023: 国立天文台, JASMINEプロジェクト, 助教
2018 – 2021: 東京大学, 大学院理学系研究科(理学部), 特任助教
Review Section/Research Field
Principal Investigator
Basic Section 17010:Space and planetary sciences-related
Except Principal Investigator
Basic Section 16010:Astronomy-related
Keywords
Principal Investigator
分光学 / 惑星間塵 / 動画天文学 / 広視野カメラ / 広視野動画観測 / 惑星間空間ダスト / 流星
Except Principal Investigator
始原天体 / 広視野高速CMOSカメラ / 高速CMOSカメラ … More / 重ね合わせ法 / 高速移動天体 / 太陽系小天体 / 地球接近天体 Less
  • Research Projects

    (2 results)
  • Research Products

    (19 results)
  • Co-Researchers

    (6 People)
  •  Elucidation of the origin and evolution of small near-Earth objects by wide-field high-speed survey and immediate follow-up observations

    • Principal Investigator
      奥村 真一郎
    • Project Period (FY)
      2023 – 2025
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 16010:Astronomy-related
    • Research Institution
      Research for Spaceguard Center, Japan Spaceguard Association
  •  Investigation of Compositions of Insterplanetary Dust by Spectroscopic Video ObservationPrincipal Investigator

    • Principal Investigator
      Ohsawa Ryou
    • Project Period (FY)
      2018 – 2021
    • Research Category
      Grant-in-Aid for Early-Career Scientists
    • Review Section
      Basic Section 17010:Space and planetary sciences-related
    • Research Institution
      The University of Tokyo

All 2024 2023 2020 2019 2018

All Journal Article Presentation

  • [Journal Article] Intermediate-luminosity Type IIP SN 2021gmj: a low-energy explosion with signatures of circumstellar material2024

    • Author(s)
      Yuta Murai, Masaomi Tanaka, Miho Kawabata et al. (including Kohki Uno)
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 528 Issue: 3 Pages: 4209-4227

    • DOI

      10.1093/mnras/stae170

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-22KJ1986, KAKENHI-PROJECT-22K03676, KAKENHI-PROJECT-23K03469, KAKENHI-PROJECT-21K13966, KAKENHI-PROJECT-20H00174, KAKENHI-PROJECT-20H00179, KAKENHI-PROJECT-21H04491
  • [Journal Article] A search for extragalactic fast optical transients in the Tomo-e Gozen high-cadence survey2023

    • Author(s)
      Oshikiri Kakeru、Tanaka Masaomi、Tominaga Nozomu、Morokuma Tomoki、Takahashi Ichiro、Tampo Yusuke、Hamidani Hamid、Arima Noriaki、Arimatsu Ko、Kasuga Toshihiro、Kobayashi Naoto、Kondo Sohei、Mori Yuki、Niino Yuu、Ohsawa Ryou、Okumura Shin-ichiro、Sako Shigeyuki、Takahashi Hidenori
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 527 Issue: 1 Pages: 334-345

    • DOI

      10.1093/mnras/stad3184

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K03469, KAKENHI-PROJECT-22KJ1698, KAKENHI-PROJECT-20H00179, KAKENHI-PROJECT-21H04491, KAKENHI-PROJECT-23H00127
  • [Journal Article] Evidence for a rapid decrease of Pluto’s atmospheric pressure revealed by a stellar occultation in 20192020

    • Author(s)
      K. Arimatsu, G. L. Hashimoto, M. Kagitani, T. Sakanoi, Y. Kasaba, R. Ohsawa, S. Urakawa
    • Journal Title

      Astronomy & Astrophysics

      Volume: 638 Pages: L5-L5

    • DOI

      10.1051/0004-6361/202037762

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K13599, KAKENHI-PROJECT-18K13606
  • [Journal Article] Relationship between radar cross section and optical magnitude based on radar and optical simultaneous observations of faint meteors2020

    • Author(s)
      R. Ohsawa, A. Hirota, K. Morita, S. Abe, D. Kastinen, J. Kero, C. Szasz, Y. Fujiwara, T. Nakamura, K. Nishimura, S. Sako, J. Watanabe, et al.
    • Journal Title

      Planetary and Space Science

      Volume: 194 Pages: 105011-105011

    • DOI

      10.1016/j.pss.2020.105011

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13599, KAKENHI-PLANNED-17H06363, KAKENHI-PROJECT-16H06341, KAKENHI-PROJECT-18H01272, KAKENHI-PROJECT-18K13606, KAKENHI-PROJECT-20H00179, KAKENHI-ORGANIZER-17H06357, KAKENHI-PROJECT-18H01261, KAKENHI-PROJECT-23K20254
  • [Journal Article] New Constraint on the Atmosphere of (50000) Quaoar from a Stellar Occultation2019

    • Author(s)
      Ko Arimatsu, Ryou Ohsawa, George L. Hashimoto, Seitaro Urakawa, Jun Takahashi, Miyako Tozuka, Yoichi Itoh, Misato Yamashita, et al.
    • Journal Title

      The Astronomical Journal

      Volume: 158 Issue: 6 Pages: 236-236

    • DOI

      10.3847/1538-3881/ab5058

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13599, KAKENHI-PROJECT-18K13606, KAKENHI-PLANNED-17H06363, KAKENHI-PUBLICLY-18H04575, KAKENHI-PROJECT-16H06341, KAKENHI-PROJECT-16H02158, KAKENHI-PROJECT-18H01261, KAKENHI-PROJECT-18H01272, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-18H05440
  • [Journal Article] An optical search for transients lasting a few seconds2019

    • Author(s)
      Michael W. Richmond, Masaomi Tanaka, Tomoki Morokuma, Shigeyki Sako, Ryou Ohsawa, Noriaki Arima, Nozomu Tominaga, Mamoru Doi, et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 72 Issue: 1 Pages: 3-3

    • DOI

      10.1093/pasj/psz120

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13599, KAKENHI-PROJECT-18K13606, KAKENHI-PLANNED-17H06363, KAKENHI-PUBLICLY-18H04575, KAKENHI-PROJECT-16H06341, KAKENHI-PROJECT-16H02158, KAKENHI-PROJECT-18H01261, KAKENHI-PROJECT-18H01272, KAKENHI-PROJECT-17J01884, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-18H05440
  • [Journal Article] Luminosity function of faint sporadic meteors measured with a wide-field CMOS mosaic camera Tomo-e PM2019

    • Author(s)
      Ohsawa Ryou, Toshikazu Shigeyama (26/37) et al.
    • Journal Title

      Planetary and Space Science

      Volume: 165 Pages: 281-292

    • DOI

      10.1016/j.pss.2018.09.006

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-16K05287, KAKENHI-PROJECT-17K05381, KAKENHI-PROJECT-17K05395, KAKENHI-PROJECT-18K13599, KAKENHI-PROJECT-18K13606, KAKENHI-PROJECT-18H01261, KAKENHI-PROJECT-18H01272, KAKENHI-PROJECT-15H05440, KAKENHI-PUBLICLY-18H04575, KAKENHI-PROJECT-16H02158, KAKENHI-PLANNED-17H06363
  • [Presentation] Near-Earth Object observation activities Near-Earth Object observation activities for Planetary Defense in Japan2023

    • Author(s)
      Shin-ichiro Okumura, Kota Nishiyama, Seitaro Urakawa, Tokuhiro Nimura, Tomoko Fujiwara, Kazuko Ando, Daisuke Kuroda, Ryou Ohsawa, Jin Beniyama, Shigeyuki Sako, Toshifumi Yanagisawa
    • Organizer
      Asia-Pacific Regional IAU Meeting 2023
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K03469
  • [Presentation] 東京大学木曽シュミット望遠鏡搭載広視野動画カメラTomo-e Gozenと地球接近小惑星探索2023

    • Author(s)
      高橋英則、土居守、小林尚人、酒向重行、大澤亮、新納悠、瀧田怜、近藤荘平、森由貴、田中雅臣、諸隈智貴、冨永望、池田思朗、山本泰生、奥村真一郎、紅山仁、津々木里咲
    • Organizer
      2023年度日本地球惑星科学連合大会
    • Data Source
      KAKENHI-PROJECT-23K03469
  • [Presentation] 美星スペースガードセンターを中心とするNEO観測活動2023

    • Author(s)
      奥村真一郎, 西山広太, 浦川聖太郎, 二村徳宏, 藤原智子, 黒田大介, 安藤和子, 柳沢俊史, 大澤亮
    • Organizer
      2023年度日本地球惑星科学連合大会
    • Data Source
      KAKENHI-PROJECT-23K03469
  • [Presentation] 木曽観測所Tomo-e Gozenと重ね合わせによる微小地球接近天体の観測2023

    • Author(s)
      奥村真一郎, 柳沢俊史, 大澤亮, 酒向重行, 紅山仁, 高橋英則, 吉田二美, 吉川真, 浦川聖太郎, 阿部新助
    • Organizer
      第67回宇宙科学技術連合講演会
    • Data Source
      KAKENHI-PROJECT-23K03469
  • [Presentation] Near-Earth Asteroid Survey with Tomo-e Gozen2020

    • Author(s)
      Ryou Ohsawa, Jin Beniyama, Shigeyuki Sako, Seitaro Urakawa, Shin-ichiro Okumura, Jun-ichi Watanabe, Makoto Yoshikawa, Tomoki Morokuma
    • Organizer
      JpGU-AGU Joint Meeting 2020: Virtual
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13599
  • [Presentation] 京都大学 MU レーダと東京大学木曽観測所 {Tomo-e~Gozen} による微光流星同時 観測2019

    • Author(s)
      大澤亮, 弘田旭, 森田晃平, 阿部新助, Daniel Kastinen, Johan Kero, 藤原康徳, 中村卓司, 西村耕司, 酒向重行, 渡部潤一
    • Organizer
      日本惑星科学会 2019 年秋季講演会
    • Data Source
      KAKENHI-PROJECT-18K13599
  • [Presentation] Radar and optical simultaneous observations of faint meteors with MU radar and Tomo-e Gozen2019

    • Author(s)
      Ryou Ohsawa, Akira Hirota, Shinsuke Abe, Daniel Kastinen, Johan Kero, Shigeyuki Sako, Jun-ichi Watanabe
    • Organizer
      Japan Geoscience Union Meeting 2019
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13599
  • [Presentation] Radar and optical simultaneous observations of faint meteors with MU radar and Tomo-e Gozen2019

    • Author(s)
      Ryou Ohsawa, Akira Hirota, Kohei Morita, Shinsuke Abe, Daniel Kastinen, Johan Kero, Takuji Nakamura, Koji Nishimura, Shigeyuki Sako, and Jun-ichi Watanabe
    • Organizer
      Meteoroids 2019
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13599
  • [Presentation] Optical Observations of Faint Meteors with a Wide-Field CMOS Camera Tomo-e Gozen2018

    • Author(s)
      Ryou Ohsawa, Shigeyuki Sako, Fumihiko Usui, Yuki Sarugaku, Mikiya Sato, Yasunori Fujiwara, Takafumi Ootsubo, Shinsuke Abe, Akira Hirota, Ko Arimatsu, Toshihiro Kasuga, Jun-ichi Watanabe, and Tomo-e Gozen Science Group
    • Organizer
      45th Annual European Meeting on Atmospheric Studies by Optical Methods
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13599
  • [Presentation] All Sky Survey and Meteor Observations with Tomo-e Gozen2018

    • Author(s)
      Ryou Ohsawa
    • Organizer
      9th Workshop on Catastrophic Disruption in the Solar System
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13599
  • [Presentation] 東京大学木曽観測所広視野 CMOS モザイクカメラ Tomo-e Gozen による人工天体の観測2018

    • Author(s)
      大澤亮, 酒向重行, 小島悠人, 奥村真一郎, 浦川聖太郎, 柳澤俊史, 吉川真, Tomo-e Gozen サイエンスグループ
    • Organizer
      第 8 回 スペースデブリワークショップ
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13599
  • [Presentation] Video Observations of Faint Meteors with Tomo-e PM2018

    • Author(s)
      Ryou Ohsawa, et al.
    • Organizer
      日本地球惑星科学連合 2018 年大会
    • Data Source
      KAKENHI-PROJECT-18K13599
  • 1.  奥村 真一郎 (40344270)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 5 results
  • 2.  柳沢 俊史 (20371106)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 3 results
  • 3.  酒向 重行 (90533563)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 4 results
  • 4.  吉田 二美 (20399306)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 1 results
  • 5.  吉川 真 (70311173)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 1 results
  • 6.  茂山 俊和
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results

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