精密Ｘ線分光による標準質量限界（１．４太陽質量）の検証

• Project/Area Number: 15J10520
• Research Category: Grant-in-Aid for JSPS Fellows
• Allocation Type: Single-year Grants
• Section: 国内
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Nagoya University
• Principal Investigator: 林 多佳由 名古屋大学, 理学研究科, 特別研究員(SPD)
• Project Period (FY): 2015-04-24 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000); Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2016: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2015: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 白色矮星 / 激変星 / プラズマ / X線天文学 / 望遠鏡 / 波動光学 / 強磁場 / 降着柱 / 反射X線 / X線スペクトル / X線望遠鏡

Outline of Annual Research Achievements

白色矮星への降着プラズマ流から放射された熱的X線に加え、これが白色矮星表面で反射された成分も取り込み、白色矮星の質量と半径を独立して測定できるX線スペクトルモデルを完成させた。「反射」とは白色矮星を照らすプラズマ流からのX線が、白色矮星表面で散乱または吸収・再放射されて再び白色矮星外部へ放射されることを指す。この成分は、6.4 keVの蛍光鉄輝線と20 keV付近に現れる、コンプトンハンプと呼ばれるスペクトル構造で卓越する。その強度はプラズマ流から見た白色矮星の立体角、つまり、白色矮星半径に対するプラズマ流の高さを反映する。白色矮星の重力ポテンシャルはプラズマ流からの直接成分のX線スペクトルから得られる、プラズマの最高温度から測定でき、白色矮星の質量と半径の比が決まる。さらに、プラズマ流の高さの絶対値は、重力ポテンシャルから流体力学的に算出できる。これらを組み合わせることによって、白色矮星の質量と半径が測定可能になる。 プラズマ流からのX線スペクトルモデルはすでにモデル化が済んでいる。一方で、反射成分に関しては、今回、プラズマ流からのX線スペクトルを基にモンテカルロシミュレーションによってモデル化した。
ハードウェア開発ではXARMプロジェクト搭載X線望遠鏡の開発の準備を進めた。特に、X線望遠鏡に使用する反射鏡の評価システムを開発した。1台のX線望遠鏡には約1600枚の反射鏡を使用するが、実際にはさらに多くの反射鏡を作成し、良いものを選別して使用する。従来、反射鏡の選別は、反射鏡に可視平行光を照射し、反射した光の回折像を人の目で見て行っている。今回私は、波動光学によって反射鏡からの回折像をモデル化し、CMOSカメラで取得したデータににフィットすることで反射鏡の表面形状をシステマティックに評価するシステムを開発した。このシステムは衛星搭載品の開発に使用されている。

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] X-ray reflection from cold white dwarfs in magnetic cataclysmic variables (2017)
  • Author(s): Hayashi Takayuki、Kitaguchi Takao、Ishida Manabu
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 474 Issue: 2 Pages: 1810-1825
  • DOI: 10.1093/mnras/stx2766
  • Peer Reviewed
• [Journal Article] NuSTAR Observations of the Dwarf Nova GK Persei in 2015: Comparison between Outburst and Quiescent Phases (2017)
  • Author(s): Wada, Y.; Yuasa, T.; Nakazawa, K.; Makishima, K.; Hayashi, T.; Ishida, M.
  • Journal Title: ASP Conference Series Volume: 509 Pages: 509-509
  • Open Access
• [Journal Article] White Dwarf Mass Estimation with X-ray Spectroscopy (2017)
  • Author(s): Hayashi, T.
  • Journal Title: ASP Conference Series Volume: 509 Pages: 523-523
  • Open Access
• [Journal Article] The impact of SUZAKU on the knowledge of CVs and expectation to ASTRO-H (2017)
  • Author(s): Hayashi, Takayuki
  • Journal Title: Proceeding of Science Volume: 1
  • Open Access
• [Journal Article] Suzaku X-ray observation of the GK Persei dwarf nova outburst in 2015 (2016)
  • Author(s): Takayuki Yuasa, Takayuki Hayashi, Manabu Ishida
  • Journal Title: Monthly Notice of the Royal Astronomical Society Volume: 459 Issue: 1 Pages: 779-788
  • DOI: 10.1093/mnras/stw734
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [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] 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] First peek of ASTRO-H Soft X-ray Telescope (SXT) in-orbit performance (2016)
  • Author(s): Okajima, Takashi et al.
  • Journal Title: Proceedings of the SPIE Volume: 9905 Pages: 99050Z-99050Z
  • DOI: 10.1117/12.2231705
  • Open Access / Int'l Joint Research
• [Journal Article] Performance of ASTRO-H hard x-ray telescope (HXT) (2016)
  • Author(s): Awaki, H., Kunieda, H., Ishida, M., Matsumoto, H., et al.
  • Journal Title: Proceedings of the SPIE Volume: 9905 Pages: 990512-990512
  • DOI: 10.1117/12.2231258
  • Open Access / Int'l Joint Research
• [Journal Article] In-flight verification of the calibration and performance of the ASTRO-H (Hitomi) Soft X-Ray Spectrometer (2016)
  • Author(s): M. Leutenegger; M. Audard; K. Boyce; G. Brown; M. Chiao; M. Eckart; R. Fujimoto; A. Furuzawa; M. Guainazzi; D. Haas; J. den Herder; T. Hayashi; R. Iizuka; M. Ishida; Y. Ishisaki; R. Kelley; N. Kikuchi; C. Kilbourne; S. Koyama; et al.
  • Journal Title: Proceedings of the SPIE Volume: Volume 9905 Pages: 99053U-99053U
  • DOI: 10.1117/12.2234230
  • Open Access / Int'l Joint Research
• [Journal Article] The ASTRO-H SXT performance to the large off-set angles (2016)
  • Author(s): Sato, Toshiki et al.
  • Journal Title: Proceedings of the SPIE Volume: 9905 Pages: 99053X-99053X
  • DOI: 10.1117/12.2232175
  • Open Access / Int'l Joint Research
• [Journal Article] Reflectivity around the gold M-edges of x-ray reflector of the Soft X-ray Telescope onboard ASTRO-H (2016)
  • Author(s): Kurashima, Sho et al.
  • Journal Title: Proceedings of the SPIE Volume: 9905 Pages: 99053Y-99053Y
  • DOI: 10.1117/12.2231173
  • Open Access / Int'l Joint Research
• [Journal Article] Reflectivity around the gold L-edges of x-ray reflector of the soft x-ray telescope onboard ASTRO-H (2016)
  • Author(s): Maeda, Y., Kikuchi, N., Kurashima, S., Ishida, M., Iizuka, R., Hayashi, T., Okajima, T., Matsumoto, H., Mitsuishi, I., Saji, S., Sato, T., Tachibana, S., Mori, H., Christensen, F., Brejnholt, N., Nitta, K., Uruga, T.
  • Journal Title: Proceedings of the SPIE Volume: 9905 Pages: 99053Z-99053Z
  • DOI: 10.1117/12.2232727
  • Open Access / Int'l Joint Research
• [Journal Article] Ray-tracing simulation and in-orbit performance of the ASTRO-H hard x-ray telescope (HXT) (2016)
  • Author(s): Matsumoto, H., H.; Awaki, H., et al.
  • Journal Title: Proceedings of the SPIE Volume: 9905 Pages: 990541-990541
  • DOI: 10.1117/12.2232135
  • Open Access / Int'l Joint Research
• [Journal Article] Point spread function of ASTRO-H Soft X-ray Telescope (SXT) (2016)
  • Author(s): Hayashi, Takayuki et al.
  • Journal Title: Proceedings of the SPIE Volume: 9905 Pages: 99055D-99055D
  • DOI: 10.1117/12.2232007
  • Open Access / Int'l Joint Research
• [Journal Article] Examining the angular resolution of the ASTRO-H's soft x-ray telescopes (2016)
  • Author(s): Sato, Toshiki et al.
  • Journal Title: Journal of Astronomical Telescopes, Instruments, and Systems Volume: 2 Issue: 4 Pages: 044001-044001
  • DOI: 10.1117/1.jatis.2.4.044001
  • Peer Reviewed / Open Access / 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] Upgrade of the 30-m x-ray pencil beam line at the Institute of Space and Astronautical Science (2015)
  • Author(s): Hayashi, Takayuki; Sato, Toshiki; Kikuchi, Naomichi; Kurashima, Sho; Nakaniwa, Nozomi; Sato, Takuro; Iizuka, Ryo; Maeda, Yoshitomo; Ishida, Manabu
  • Journal Title: Journal of Astronomical Telescopes Volume: 1 Issue: 4 Pages: 0400441-0400447
  • DOI: 10.1117/1.jatis.1.4.044004
  • Peer Reviewed / Open Access
• [Presentation] 高角度分解能 X 線望遠鏡の概念検討 (2017)
  • Author(s): 前田良知ら
  • 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 (ASTRO-H) 搭載軟X線望遠鏡の Crab 観測による軌道上での性能評価 (2017)
  • Author(s): 倉嶋翔ら
  • 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 (ASTRO-H)」搭載軟 X 線望遠鏡 (SXT) の軌道上での有効面積の評価 (2017)
  • Author(s): 中庭望ら
  • 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] X線天文衛星「ひとみ (ASTRO-H)」搭載硬 X 線望遠鏡 (HXT) の軌道上での 性能評価 II (2017)
  • Author(s): 粟木久光ら
  • 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] 強磁場激変星のX線スペクトルモデルの構築 (2017)
  • Author(s): 林多佳由
  • Organizer: 第16回高宇連研究会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2017-03-09
• [Presentation] White dwarf mass estimation by plasma emission spectroscopy (2017)
  • Author(s): Takayuki Hayashi
  • Organizer: Collaborative Conference on Plasma Physics 2017
  • Int'l Joint Research / Invited
• [Presentation] The impact of SUZAKU on the knowledge of the physics of CVs (2017)
  • Author(s): Takayuki Hayashi
  • Organizer: The Golden Age of Cataclysmic Variables and Related Objects - IV
  • Int'l Joint Research / Invited
• [Presentation] X線天文衛星「ひとみ (ASTRO-H)」搭載軟 X 線望遠鏡 (SXT) の軌道上 での性能評価 (2016)
  • Author(s): 前田良知ら
  • 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] ひとみ (ASTRO-H)」搭載軟 X 線望遠鏡に用いる反射鏡の反射率測定 (2016)
  • Author(s): 中庭望ら
  • 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] X線天文衛星「ひとみ (ASTRO-H)」搭載硬 X 線望遠鏡 (HXT) の軌道上 での性能評価 (2016)
  • Author(s): 粟木久光ら
  • 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] γ Cas 及び γCas 型天体 HD 110432 の X 線放射機構の推定 (2016)
  • Author(s): 森鼻久美子ら
  • 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] White dwarf mass estimation with X-ray spectroscopy (2016)
  • Author(s): Hayashi, Takayuki
  • Organizer: 20th European White Dwarf Workshop (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-07-25
  • Int'l Joint Research
• [Presentation] NuSTAR observations of the Dwarf Nova GK Persei in 2015: comparison between outburst and quiescent phases (2016)
  • Author(s): Wada, Yuuki et al.
  • Organizer: 20th European White Dwarf Workshop (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-07-25
  • Int'l Joint Research
• [Presentation] The ASTRO-H (Hitomi) x-ray astronomy satellite (2016)
  • Author(s): Takahashi, Tadayuki et al.
  • Organizer: SPIE Astronomical Telescopes + Instrumentation (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] Point spread function of ASTRO-H Soft X-ray Telescope (SXT) (2016)
  • Author(s): Hayashi, Takayuki et al.
  • Organizer: SPIE Astronomical Telescopes + Instrumentation (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] First peek of ASTRO-H Soft X-ray Telescope (SXT) in-orbit performance (2016)
  • Author(s): Okajima, Takashi et al.
  • Organizer: SPIE Astronomical Telescopes + Instrumentation (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] Performance of ASTRO-H hard x-ray telescope (HXT) (2016)
  • Author(s): Awaki, Hisamitsu et al.
  • Organizer: SPIE Astronomical Telescopes + Instrumentation (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] In-flight verification of the calibration and performance of the ASTRO-H (Hitomi) Soft X-Ray Spectrometer (2016)
  • Author(s): Leutenegger, Maurice A.
  • Organizer: SPIE Astronomical Telescopes + Instrumentation (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] The ASTRO-H SXT performance to the large off-set angles (2016)
  • Author(s): Sato, Toshiki et al.
  • Organizer: SPIE Astronomical Telescopes + Instrumentation (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] Reflectivity around the gold M-edges of x-ray reflector of the Soft X-ray Telescope onboard ASTRO-H (2016)
  • Author(s): Kurashima, Sho et al.
  • Organizer: SPIE Astronomical Telescopes + Instrumentation (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] Reflectivity around the gold L-edges of x-ray reflector of the soft x-ray telescope onboard ASTRO-H (2016)
  • Author(s): Maeda, Yoshitomo et al.
  • Organizer: SPIE Astronomical Telescopes + Instrumentation (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] Measurements of reflectivity around the Pt L and K absorption edges of Pt/C multilayer reflector for calibration of the ASTRO-H hard x-ray telescope (HXT) (2016)
  • Author(s): Furuzawa, Akihiro et al.
  • Organizer: SPIE Astronomical Telescopes + Instrumentation (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] Ray-tracing simulation and in-orbit performance of the ASTRO-H hard x-ray telescope (HXT) (2016)
  • Author(s): Matsumoto, H. et al.
  • Organizer: SPIE Astronomical Telescopes + Instrumentation (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] Summary of the ground-based calibration for the ASTRO-H hard x-ray telescopes (HXTs) (2016)
  • Author(s): Mitsuishi, Ikuyuki et al.
  • Organizer: SPIE Astronomical Telescopes + Instrumentation (2016)
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] 宇宙科学研究所30mビームラインの概要 (2015)
  • Author(s): 林多佳由, 佐藤寿紀,菊地直道, 倉島翔, 中庭望, 佐藤拓郎, 飯塚亮, 前田良知, 石田學
  • Organizer: 第13回X線光学シンポジウム
  • Place of Presentation: 名古屋
  • Year and Date: 2015-11-17
• [Presentation] The impact of SUZAKU on the knowledge of CVs and expectation to ASTRO-H (2015)
  • Author(s): Hayashi, Takayuki
  • Organizer: The Golden Age of Cataclysmic Variable and Related Object - III
  • Place of Presentation: Palermo, Italy
  • Year and Date: 2015-09-10
  • Int'l Joint Research / Invited
• [Presentation] White dwarf mass estimation with X-ray observation (2015)
  • Author(s): Hayashi, Takayuki
  • Organizer: The 14th Marcel Grossmann Meeting
  • Place of Presentation: Roma, Italy
  • Year and Date: 2015-07-16
  • Int'l Joint Research / Invited
• [Patent(Industrial Property Rights)] 望遠鏡システム (2016)
  • Inventor(s): 前田 良知、石田 学、飯塚 亮、林 多佳由
  • Industrial Property Rights Holder: 国立研究開発法人宇宙航空研究開発機構
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2016-078208
  • Filing Date: 2016-04-08