X-ray spectroscopic study of velocity strucutres in the intracluster medium

• Project/Area Number: 16K05295
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Astronomy
• Research Institution: Nara Women's University
• Principal Investigator: Ota Naomi 奈良女子大学, 自然科学系, 准教授 (40391891)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: X線天文学 / 宇宙物理学 / 銀河団 / 高温プラズマ / 宇宙構造形成 / Ｘ線天文学 / 宇宙物理

Outline of Final Research Achievements

Clusters of galaxies are the largest objects in the universe, and the pressure due to complex gas motions inside them are thought to cause uncertainties in estimating the mass of dark matter. We succeeded in measuring the turbulent motion at the center of the Perseus cluster and showed that the pressure due to the gas motion is small. In preparation for the future high-resolution spectroscopy, we performed simulations to examine the variety of gas motions and the accuracy of mass measurement in detail. Furthermore, we systematically studied X-ray properties of clusters that were newly discovered by the Subaru telescope to find that the simple theoretical model cannot explain the observed relationship between the gas temperature and luminosity and the evolution.

Academic Significance and Societal Importance of the Research Achievements

銀河団の質量を正確に測ることは、未知のダークマターやダークエネルギーに満ちた宇宙そのものの進化を理解することにつながる。その不定性のもととなる銀河団中のガスの乱流運動を測ることはこれまで難しかったが、ひとみ衛星により初めて直接測定を実現した。また将来のより本格的なＸ線精密分光測定に備え、最新のシミュレーションを用いて質量推定の方法を詳細に検討した。また、すばる望遠鏡によって新しく見つかった様々な距離にある銀河団をＸ線で追観測し、その性質を明らかにした。以上により、今後の大規模な銀河団全天サーベイ観測や宇宙論研究への応用に役に立つ重要な知見を得た。

Research Products

• [Int'l Joint Research] Yale University(米国)
• [Int'l Joint Research] MPE(ドイツ)
• [Int'l Joint Research] Yale University(米国)
• [Int'l Joint Research] SRON(オランダ)
• [Int'l Joint Research] MPE(ドイツ)
• [Int'l Joint Research] SLAC National Accelerator Laboratory(米国)
• [Int'l Joint Research] SRON(オランダ)
• [Journal Article] Halo Concentration, Galaxy Red Fraction, and Gas Properties of Optically-defined Merging Clusters (2019)
  • Author(s): Okabe Nobuhiro, Oguri Masamune, Akamatsu Hiroki, Hamabata Akinari, Nishizawa Atsushi J., Medezinski Elinor, Koyama Yusei, Hayashi Masao, Okabe Taizo, Ueda Shutaro, Mitsuishi Ikuyuki, Ota Naomi
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 印刷中
  • Peer Reviewed
• [Journal Article] High entropy and evidence for a merger in the low surface brightness cluster Abell 2399 (2018)
  • Author(s): Mitsuishi Ikuyuki, Babazaki Yasunori, Ota Naomi, Sasaki Shin, Boehringer Hans, Chon Gayoung, Pratt Gabriel W.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 6
  • DOI: 10.1093/pasj/psy117
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Super DIOS: Future X-ray Spectroscopic Mission to Search for Dark Baryons (2018)
  • Author(s): Yamada S., et al. the DIOS team
  • Journal Title: Journal of Low Temperature Physics Volume: 193 Issue: 5-6 Pages: 1016-1023
  • DOI: 10.1007/s10909-018-1918-z
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Discovery of large scale shock fronts correlated with the radio halo and radio relic in the A2163 galaxy cluster (2018)
  • Author(s): Thoelken Sophia, Reiprich Thomas H., Sommer Martin W., Ota Naomi
  • Journal Title: Astronomy & Astrophysics Volume: 619 Pages: A68-A68
  • DOI: 10.1051/0004-6361/201834053
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A Cool Core Disturbed: Observational Evidence for the Coexistence of Subsonic Sloshing Gas and Stripped Shock-heated Gas around the Core of RX J1347.5-1145 (2018)
  • Author(s): Ueda Shutaro、Kitayama Tetsu、Oguri Masamune、Komatsu Eiichiro、Akahori Takuya、Iono Daisuke、Izumi Takumi、Kawabe Ryohei、Kohno Kotaro、Matsuo Hiroshi、Ota Naomi、Suto Yasushi、Takakuwa Shigehisa、Takizawa Motokazu、Tsutsumi Takahiro、Yoshikawa Kohji
  • Journal Title: The Astrophysical Journal Volume: 866 Issue: 1 Pages: 48-48
  • DOI: 10.3847/1538-4357/aadd9d
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Constraining hydrostatic mass bias of galaxy clusters with high-resolution X-ray spectroscopy (2018)
  • Author(s): Ota Naomi, Nagai Daisuke, Lau Erwin T.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 3
  • DOI: 10.1093/pasj/psy040
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Suzaku observations of low surface brightness cluster Abell 1631 (2018)
  • Author(s): Babazaki Yasunori, Mitsuishi Ikuyuki, Ota Naomi, Sasaki Shin, Boehringer Hans, Chon Gayoung, Pratt Gabriel W., Matsumoto Hironori
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 3
  • DOI: 10.1093/pasj/psy036
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Hitomi (ASTRO-H) X-ray Astronomy Satellite (2018)
  • Author(s): Tadayuki Takahashi, Yuto Ichinohe (73/270) et al.
  • Journal Title: Journal of Astronomical Telescopes, Instruments, and Systems Volume: 4 Issue: 02 Pages: 021402-021402
  • DOI: 10.1117/1.jatis.4.2.021402
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Atomic data and spectral modeling constraints from high-resolution X-ray observations of the Perseus cluster with Hitomi* (2018)
  • Author(s): Hitomi Collaboration, Aya Bamba
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 2 Pages: 12-12
  • DOI: 10.1093/pasj/psx156
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Temperature structure in the Perseus cluster core observed with Hitomi (2018)
  • Author(s): Hitomi Collaboration, Aya Bamba, et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 2 Pages: 11-11
  • DOI: 10.1093/pasj/psy004
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Measurements of resonant scattering in the Perseus Cluster core with Hitomi SXS (2018)
  • Author(s): Hitomi Collaboration, Aya Bamba, et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 2 Pages: 10-10
  • DOI: 10.1093/pasj/psx127
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Atmospheric gas dynamics in the Perseus cluster observed with Hitomi (2018)
  • Author(s): Hitomi Collaboration, Aya Bamba, et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 2 Pages: 9-9
  • DOI: 10.1093/pasj/psx138
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A large sample of shear-selected clusters from the Hyper Suprime-Cam Subaru Strategic Program S16A Wide field mass maps (2018)
  • Author(s): Miyazaki Satoshi、Oguri Masamune、Hamana Takashi、Shirasaki Masato、Koike Michitaro、Komiyama Yutaka、Umetsu Keiichi、Utsumi Yousuke、Okabe Nobuhiro、More Surhud、Medezinski Elinor、Lin Yen-Ting、Miyatake Hironao、Murayama Hitoshi、Ota Naomi、Mitsuishi Ikuyuki
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: SP1
  • DOI: 10.1093/pasj/psx120
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Multiwavelength study of X-ray luminous clusters in the Hyper Suprime-Cam Subaru Strategic Program S16A field (2018)
  • Author(s): Miyaoka et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: SP1 Pages: 1-20
  • DOI: 10.1093/pasj/psx132
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Suzaku and Chandra observations of the galaxy cluster RXC J1053.7+5453 with a radio relic (2017)
  • Author(s): Itahana Madoka、Takizawa Motokazu、Akamatsu Hiroki、van Weeren Reinout J.、Kawahara Hajime、Fukazawa Yasushi、Kaastra Jelle S.、Nakazawa Kazuhiro、Ohashi Takaya、Ota Naomi、Roettgering Huub J. A.、Vink Jacco、Zandanel Fabio
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 69 Issue: 6 Pages: 88-88
  • DOI: 10.1093/pasj/psx095
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Solar abundance ratios of the iron-peak elements in the Perseus cluster (2017)
  • Author(s): Aharonian, F., Bamba, A. et al.
  • Journal Title: Nature Volume: 551 Issue: 7681 Pages: 478-480
  • DOI: 10.1038/nature24301
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Blind Millimeter Line Emitter Search using ALMA Data Toward Gravitational Lensing Clusters (2017)
  • Author(s): Yamaguchi Yuki、Kohno Kotaro、Tamura Yoichi、Oguri Masamune、Ezawa Hajime、Hayatsu Natsuki H.、Kitayama Tetsu、Matsuda Yuichi、Matsuo Hiroshi、Oshima Tai、Ota Naomi、Izumi Takuma、Umehata Hideki
  • Journal Title: The Astrophysical Journal Volume: 845 Issue: 2 Pages: 108-108
  • DOI: 10.3847/1538-4357/aa80e0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Search for the warm-hot intergalactic medium around A2744 using Suzaku (2017)
  • Author(s): Hattori, Shiho; Ota, Naomi; Zhang, Yu-Ying; Akamatsu, Hiroki; Finoguenov, Alexis
  • Journal Title: Publications of the Astronomical Society of Japan Volume: - Issue: 3
  • DOI: 10.1093/pasj/psx011
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Suzaku observations of the merging galaxy cluster Abell2255: The northeast radio relic (2017)
  • Author(s): H. Akamatsu, M. Mizuno, N. Ota, Y.-Y. Zhang, R. J. van Weeren, H. Kawahara, Y. Fukazawa, J. S. Kaastra, M. Kawaharada, K. Nakazawa, T. Ohashi, H.J.A. Rottgering, M. Takizawa, J. Vink, F. Zandanel
  • Journal Title: Astronomy and Astrophysics Volume: 600 Pages: 100-100
  • DOI: 10.1051/0004-6361/201628400
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Hitomi Constraints on the 3.5 keV Line in the Perseus Galaxy Cluster (2016)
  • Author(s): Aharonian, F. A., Akamatsu, H, Terada, Y. et al (Hitomi collaboration)
  • Journal Title: The Astrophysical Journal Letters Volume: 837 Issue: 1 Pages: 15-23
  • DOI: 10.3847/2041-8213/aa61fa
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] The Sunyaev-Zel'dovich effect at 5″: RX J1347.5-1145 imaged by ALMA (2016)
  • Author(s): T. Kitayama, S. Ueda, S. Takakuwa, T. Tsutsumi, E. Komatsu, T. Akahori, D. Iono, T. Izumi, R. Kawabe, K. Kohno, H. Matsuo, N. Ota, Y. Suto, M. Takizawa, K. Yoshikawa
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 68 Issue: 5 Pages: 88-106
  • DOI: 10.1093/pasj/psw082
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] DIOS: the dark baryon exploring mission (2016)
  • Author(s): Ohashi, T.; Ishisaki, Y.; Ezoe, Y.; Yamada, S.; Kuromaru, G.; Suzuki, S.; Tawara, Y.; Mitsuishi, I.; Babazaki, Y.; Mitsuda, K.; Yamasaki, N. Y.; Takei, Y.; Yamamoto, R.; Hayashi, T.; Ota, N.; Kelley, R. L.; Sakai, K.
  • Journal Title: Proceedings of the SPIE Volume: 9905 Pages: 99051N-99051N
  • DOI: 10.1117/12.2232274
  • Int'l Joint Research
• [Journal Article] In-orbit operation of the ASTRO-H SXS (2016)
  • Author(s): Tsujimoto, Masahiro; Seta, Hiromi(37番目); et al.
  • Journal Title: Proceedings of the SPIE Volume: 9905 Pages: 99050Y-99050Y
  • DOI: 10.1117/12.2231784
  • Int'l Joint Research
• [Journal Article] The Astro-H high resolution soft x-ray spectrometer (2016)
  • Author(s): Kelley, Richard L.; Seta, Hiromi(43番目); et al.
  • Journal Title: Proceedings of the SPIE Volume: 9905
  • DOI: 10.1117/12.2232509
  • Int'l Joint Research
• [Journal Article] The ASTRO-H (Hitomi) x-ray astronomy satellite (2016)
  • Author(s): Takahashi, T. et al.
  • Journal Title: Proceedings of the SPIE Volume: 9905 Pages: 990510-11
  • DOI: 10.1117/12.2232379
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The quiescent intracluster medium in the core of the Perseus cluster (2016)
  • Author(s): Hitomi Collaboration et al.
  • Journal Title: Nature Volume: 535 Issue: 7610 Pages: 117-121
  • DOI: 10.1038/nature18627
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Search for gas bulk motions in eight nearby clusters of galaxies with Suzaku (2016)
  • Author(s): Naomi Ota, Hiroko Yoshida
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 00 Issue: SP1 Pages: 1-14
  • DOI: 10.1093/pasj/psv128
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Central Mass Profiles of the Nearby Cool-core Galaxy Clusters Hydra A and A478 (2016)
  • Author(s): N. Okabe, K. Umetsu, T. Tamura, Y. Fujita, M. Takizawa, K. Matsushita, Y. Fukazawa, T. Futamase, M. Kawaharada, S. Miyazaki, Y. Mochizuki, K. Nakazawa, T. Ohashi, N. Ota, T. Sasaki, K. Sato, & S. I. Tam
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 456 Issue: 4 Pages: 4475-4487
  • DOI: 10.1093/mnras/stv2916
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] X-ray observations of optically-selected galaxy clusters in the Subaru HSC-SSP field (2019)
  • Author(s): Naomi Ota
  • Organizer: Panchromatic Panoramic Studies of Galaxy Clusters: from HSC to PFS and ULTIMATE
  • Int'l Joint Research
• [Presentation] HSC-SSP サーベイ領域にある可視銀河団のX線フォローアップ計画 (2) (2019)
  • Author(s): 太田直美, 三石郁之, 赤松弘規, 一戸悠人, 上田周太朗, 大栗真宗, 大谷花絵, 岡部信広, 田中桂悟, 辻歩美, 浜名崇 , 宮崎聡, 吉田篤史, 他 HSC 銀河団コラボレーション
  • Organizer: 日本天文学会2019年春季年会
• [Presentation] HSC-SSPサーベイ領域Weak Lensing銀河団のX線フォローアップ計画(4) (2019)
  • Author(s): 吉田篤史, 三石郁之, 太田直美, 宮崎聡, 大栗真宗, 浜名 崇, 岡部信広, 赤松弘規, 一戸悠人, 上田周太朗, 大谷花絵, 他 HSC 銀河団コラボレーション
  • Organizer: 日本天文学会2019年春季年会
• [Presentation] XMM-Newton 衛星による重力レンズ天体 Eye of Horus 周辺の銀河団ガスの重力質量分布の測定 (2019)
  • Author(s): 田中桂悟, 辻歩美, 一戸悠人, 上田周太朗, 江上英一, 大栗真宗, 太田直美, 岡部信広, 田中賢幸, 藤本龍一, Anupreeta More, Kenneth Wong
  • Organizer: 日本天文学会2019年春季年会
• [Presentation] サブハローのガス質量比測定を通じたA2319銀河団の質量構造の研究 (2019)
  • Author(s): 大谷花絵, 太田直美, 岡部信広, 上田周太朗
  • Organizer: 日本天文学会2019年春季年会
• [Presentation] ダークバリオン探査ミッションSuper DIOSの開発へ向けた検討III (2019)
  • Author(s): 佐藤浩介、大橋隆哉、石崎欣尚、江副祐一郎、山田真也、山崎典子、満田和久、石田学、前田良知、田原譲、三石郁之、藤本龍一、鶴剛、太田直美、大里健、中島真也、藤田裕、永井大輔、吉川耕司、河合誠之、旧 DIOS ワーキンググループ
  • Organizer: 日本天文学会2019年春季年会
• [Presentation] XARM status and some prospects (2018)
  • Author(s): Naomi Ota
  • Organizer: Preparing the science of galaxy clusters & WHIM with Athena
  • Int'l Joint Research
• [Presentation] 近傍銀河団 A2319 内に存在するサブハローのガス質量比の測定 (2018)
  • Author(s): 大谷花絵, 太田直美, 岡部信広, 一戸悠人, 上田周太朗, 宮岡敬太
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] X線/可視光を用いた低表面輝度銀河団の力学状態の研究 (2018)
  • Author(s): 馬場崎康敬, 三石郁之, 太田直美, 佐々木伸, H. Boehringer, G. Chon, G. W. Pratt, 松本浩典
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] HSC による弱重力レンズ効果を利用した銀河団探査 (2018)
  • Author(s): 宮崎聡, 大栗真宗, 浜名崇, 白崎正人, 小池美知太郎, 梅津敬一,内海洋輔,岡部信広,Surhud More, Elinor Medezinski,Yen-Ting Lin, 宮武広直, 村山斉, 太田直美, 三石郁之
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] XMM-Newton 衛星による 5 つの高赤方偏移 HSC 銀河団の観測 (2018)
  • Author(s): 渡邉翔子, 太田直美, 三石郁之, 大栗真宗, 岡部信広, 赤松弘規, 一戸悠人, 上田周太朗, 大谷花絵, 馬場崎康敬, 浜名崇, 宮岡敬太, 宮崎聡, 他 HSC銀河団コラボレーション
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] HSC-SSP サーベイ領域 Weak Lensing 銀河団の X 線フォローアップ計画 (2) (2018)
  • Author(s): 三石郁之, 吉田篤史, 太田直美, 宮崎聡, 大栗真宗, 浜名崇, 岡部信広, 赤松弘規, 一戸悠人, 上田周太朗, 大谷花絵, 馬場崎康敬, 宮岡敬太, 渡邉翔子, 他 HSC 銀河団コラボレーション
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] X 線衛星代替機 XARM における科学運用計画 (2018)
  • Author(s): 寺田幸功, 田代信, 海老沢研, 深沢泰司, 飯塚亮, 勝田哲, 北口貴雄, 久保田あや, 水野恒史, 中島真也, 中澤知洋, 信川正順, 大野雅功, 太田直美, 志達めぐみ, 菅原泰晴, 高橋弘充, 田村隆幸, 田中康之, 寺島雄一, 坪井陽子, 内山秀樹, 宇野伸一郎, 渡辺伸, 山内茂雄
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] ダークバリオン探査ミッションSuper DIOSの開発へ向けた検討II (2018)
  • Author(s): 大橋隆哉、石崎欣尚、江副祐一郎、山田真也、一戸悠人、山崎典子、満田和久、田原譲、三石郁之、大里健、太田直美、佐藤浩介、旧DIOSワーキンググループ
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] すざく衛星を用いた A222/223 ブリッジ領域におけるミッシングバリオン探査 (2017)
  • Author(s): 服部詩穂, 太田直美, 赤松弘規
  • Organizer: 日本天文学会2017年春季年会
  • Place of Presentation: 九州大学
  • Year and Date: 2017-03-15
• [Presentation] 「ひとみ」によるペルセウス座銀河団のガス速度測定: (1) 速度構造 (2017)
  • Author(s): 一戸悠人, 飯塚亮, 井上翔太, 上田周太朗, 太田直美, 北山哲, 佐藤浩介, 田中桂悟, 田村隆幸, 辻本匡弘, 藤本龍一, 前田良知, 「ひとみ」コラボレーション
  • Organizer: 日本天文学会2017年春季年会
  • Place of Presentation: 九州大学
  • Year and Date: 2017-03-15
• [Presentation] 「ひとみ」によるペルセウス座銀河団のガス速度測定: (2) 輝線の非ガウス性 とイオン温度への制限 (2017)
  • Author(s): 上田周太朗, 飯塚亮, 一戸悠人, 井上翔太, 太田直美, 北山哲, 佐藤浩介, 田中桂悟, 田村隆幸, 辻本匡弘, 藤本龍一, 前田良知, 「ひとみ」コラボレーション
  • Organizer: 日本天文学会2017年春季年会
  • Place of Presentation: 九州大学
  • Year and Date: 2017-03-15
• [Presentation] 「すざく」衛星による Abell2163 銀河団外縁部の詳細な解析 (2017)
  • Author(s): 伊東雅史、松下恭子、佐藤浩介、佐々木亨 (東京理科大学)、太田直美
  • Organizer: 日本天文学会2017年春季年会
  • Place of Presentation: 九州大学
  • Year and Date: 2017-03-15
• [Presentation] 「すざく」で観測した近傍銀河団・銀河群のエントロピー分布 (2017)
  • Author(s): 佐々木亨, 松下恭子, 佐藤浩介, 横田佳奈, 栗山翼, 菅野祐, 赤松弘規, 藤田裕, 中澤知洋, 岡部信広, 大橋隆哉, 太田直美, 田村隆幸, 滝沢元和
  • Organizer: 日本天文学会2017年春季年会
  • Place of Presentation: 九州大学
  • Year and Date: 2017-03-15
• [Presentation] Suzaku Study of the WHIM and future prospects (2017)
  • Author(s): Naomi Ota
  • Organizer: Whereabouts and Physics of the Roaming Baryons in the Universe
  • Int'l Joint Research / Invited
• [Presentation] 「ひとみ」によるペルセウス座銀河団の高温ガスの速度場の測定 (2017)
  • Author(s): 上田周太朗, 一戸悠人, 藤本龍一, 井上翔太, Caroline Kilbourne, 北山哲, Maxim Markevitch, Brian McNamara, 太田直美, Scott Porter, 田村隆幸, 田中桂悟, Norbert Werner
  • Organizer: 日本天文学会2017年秋季年会
• [Presentation] 多波長観測から迫る銀河団RXC J1053.7+5453の衝突過程と粒子加速 (2017)
  • Author(s): 板花まどか,滝沢元和,赤松弘規, R. J. van Weeren, 河原創, 深沢泰司, J. S. Kaastra, 中澤知洋, 大橋隆哉, 太田直美, H. J. A. Roettgering, J. Vink, F. Zandanel
  • Organizer: 日本天文学会2017年秋季年会
• [Presentation] HSC-SSPサーベイ領域にある可視銀河団のX線フォローアップ計画 (2017)
  • Author(s): 太田直美, 三石郁之, 赤松弘規, 一戸悠人, 上田周太朗, 大栗真宗, 大谷花絵, 岡部信広, 馬場崎康敬, 浜名崇, 宮岡敬太, 宮崎聡, 渡邉翔子, 他 HSC銀河団コラボレーション
  • Organizer: 日本天文学会2017年秋季年会
• [Presentation] HSC-SSPサーベイ領域Weak Lensing銀河団のX線フォローアップ計画 (2017)
  • Author(s): 三石郁之, 太田直美, 宮崎聡, 大栗真宗, 浜名崇, 岡部信広, 赤松弘規, 一戸悠人, 上田周太朗, 大谷花絵, 馬場崎康敬, 宮岡敬太, 渡邉翔子, 他 HSC銀河団コラボレーション
  • Organizer: 日本天文学会2017年秋季年会
• [Presentation] ダークバリオン探査ミッションSuper DIOSの開発へ向けた検討 (2017)
  • Author(s): 大橋隆哉、石崎欣尚、江副祐一郎、山田真也、山崎典子、満田和久、田原 譲、三石郁之、太田直美、佐藤浩介、旧DIOSワーキンググループ
  • Organizer: 日本天文学会2017年秋季年会
• [Presentation] X線天文衛星 Athena計画 (2017)
  • Author(s): 松本浩典, 山崎典子, 満田和久, 篠崎慶亮, 深沢泰司, 鶴 剛, 常深博, 粟木久光, 海老沢研, 大橋隆哉, 太田直美, 馬場 彩, 上田佳宏, 寺島雄一
  • Organizer: 日本天文学会2017年秋季年会
• [Presentation] Atomic data and spectral modeling constraints from high-resolution X-ray spectroscopic observations of the Perseus cluster with Hitomi (2016)
  • Author(s): M. Sawada, Hitomi Collaboration
  • Organizer: 7 years of MAXI: monitoring X-ray transients
  • Place of Presentation: 理化学研究所
  • Year and Date: 2016-12-05
  • Int'l Joint Research
• [Presentation] Velocity maps of the Perseus core (2016)
  • Author(s): Naomi Ota
  • Organizer: Hitomi workshop
  • Place of Presentation: SLAC
  • Year and Date: 2016-11-17
  • Int'l Joint Research
• [Presentation] すざく衛星による銀河団 RXC J1053.7+5453 の温度測定 (2016)
  • Author(s): 板花まどか, 滝沢元和, 赤松弘規, R. van Weeren, 河原創, 深沢泰司, J. Kaastra, 中澤知洋, 大橋隆哉, 太田直美, H. Rottgering, J. Vink, F. Zandanel
  • Organizer: 日本天文学会2016年秋季年会
  • Place of Presentation: 愛媛大学
  • Year and Date: 2016-09-14
• [Presentation] ASTRO-H 搭載 精密軟 X 線分光装置 SXS の開発の現状 XVI (2016)
  • Author(s): 辻本匡弘, ASTRO-H SXS チーム
  • Organizer: 日本天文学会2016年秋季年会
  • Place of Presentation: 愛媛大学
  • Year and Date: 2016-09-14
• [Remarks] 謎のダークマターに支配された銀河団の進化を探る
  • URL: http://www.nara-wu.ac.jp/rigaku/Research/201612.html
• [Remarks] ひとみ衛星（ASTRO-H）コラボレーションの観測成果
  • URL: http://www.nara-wu.ac.jp/nwu/news/H28news/20160708/20160708.html