2013 Fiscal Year Final Research Report
A Statistical Study of Protostars with Monitoring Observations in the X-ray Band
| Project/Area Number |
23540269
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | Chuo University |
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Principal Investigator |
TSUBOI Yohko 中央大学, 理工学部, 准教授 (70349223)
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| Project Period (FY) |
2011 – 2013
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| Keywords | X線 / 星 / 原始星 / フレア / T タウリ型星 / 連星 / 多波長観測 |
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| Research Abstract |
(1) We obtained the proof that a Class 0 candidate emits X-rays. (2) In order to access the origin and the geometry of protostars by detecting flares from them, we investigated key parameters for a flare on stars. Using the Monitor of All-sky X-ray Image (MAXI), we searched huge X-ray flares on stars, and obtained the dependence of flare frequencies with flare energy and the relation of flare energy to the stellar spot size, ranging ten orders of magnitude, from small solar flares to huge stellar flares. (3) In a multi-wavelength observation of II Peg, we detected a huge version of two-ribbon flare. (4) We established a way to bend crystals by depositing Diamond Like Carbon on the surface of them. The bent crystals can be an X-ray imaging poralimetry which makes use of Bragg reflection. We also confirmed that the optics can converge X-ray beam.
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[Journal Article] Annual Parallax Determination toward a New X-Ray-emitting Class 0 Candidate with the Water Maser in the NGC 2264 Star-forming Region2014
Author(s)
Kamezaki, T., Imura, K., Omodaka, T., Handa, T., Tsuboi, Y., Nagayama, T., Hirota, T., Sunada, K., Kobayashi, H., Chibueze, J.O., Kawai, E., Nakano, M
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Journal Title
The Astrophysical Journal Supplement
Volume: 211巻
Pages: 18
Peer Reviewed
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[Journal Article] The 37 Month MAXI/GSC Source Catalog of the High Galactic-Latitude Sky2013
Author(s)
Hiroi, K., Ueda, Y., Hayashida, M., Shidatsu, M., Sato, R., Kawamuro, T., Sugizaki, M., Nakahira, S., Serino, M., Kawai, N., その他33名
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Journal Title
The Astrophysical Journal Supplement
Volume: 207巻
Pages: 36
Peer Reviewed
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[Journal Article] Spectral Evolution of a New X-Ray Transient MAXI J0556-332 Observed by MAXI, Swift, and RXTE2013
Author(s)
Sugizaki, M., Yamaoka, K., Matsuoka, M., Kennea, J.A., Mihara, T., Hiroi, K., Ishikawa, M., Isobe, N., Kawai, N., Kimura, M., その他24名, 掲載26番
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 65巻
Pages: 58
Peer Reviewed
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[Journal Article] Outburst of LS V +44 17 Observed by MAXI and RXTE, and Discovery of a Dip Structure in the Pulse Profile2012
Author(s)
Usui, R., Morii, M., Kawai, N., Yamamoto, T., Mihara, T., Sugizaki, M., Matsuoka, M., Hiroi, Kazuo., Ishikawa, M., Isobe, N., その他21名
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 64巻
Pages: 79
Peer Reviewed
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[Journal Article] A Large X-Ray Flare from a Single Weak-Lined T Tauri Star TWA-7 Detected with MAXI GSC2011
Author(s)
Uzawa, A., Tsuboi, Y., Morii, M., Yamazaki, K., Kawai, N., Matsuoka, M., Nakahira, S., Serino, M., Matsumura, T., Mihara, T., その他28名
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 63
Pages: 713-726
Peer Reviewed
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[Journal Article] The variable X-ray spectrum of the Wolf-Rayet binary WR140 with Suzaku2011
Author(s)
Sugawara, Y., Maeda, Y., Tsuboi, Y., Hamaguchi, K., Corcoran, M., Pollock, A., Moffat, A., Williams, P., Dougherty, S., Pittard, J
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Journal Title
Proceedings of the 39th Liège Astrophysical Colloquium
Volume: 80
Pages: 724-728
Peer Reviewed
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[Presentation] MAXI による4年間の巨大恒星フレアサーベイ2014
Author(s)
坪井陽子, 比嘉将也, 川越淳史, 三宅梢子, 飯田悠, 中平聡志, 冨田洋, 薄井竜一, 根来均, 松岡勝, ほかMAXI チーム
Organizer
日本天文学会2014年春季年会
Place of Presentation
国際基督教大学
Year and Date
20140319-22
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[Presentation] 星形成領域NGC2264C のVLBI 観測とclass0 天体に付随するX線源の発見2013
Author(s)
亀崎達矢, 井村健二, 面高俊宏, 半田利弘, James Chibueze O., 坪井陽子, 永山匠, 砂田和良, 廣田朋也, 仲野誠, VERA チーム
Organizer
日本天文学会2013年春季年会
Place of Presentation
埼玉大学
Year and Date
20130320-23
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[Presentation] 星形成領域NGC2264 の年周視差計測2012
Author(s)
亀崎達矢, 井村健二, 面高俊宏, 半田利弘, James chibueze okwe, 山口善之, 永山匠, 砂田和良, 廣田朋也, 仲野誠, 坪井陽子, VERA チーム
Organizer
日本天文学会2012年秋季年会
Place of Presentation
大分大学
Year and Date
20120919-21
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[Presentation] 2013年1月のII Peg フレアの多波長同時観測2012
Author(s)
秋山昌俊, 坪井陽子, 飯塚亮, 比嘉将也, 櫻井峻, 高橋英則, 橋本修, 本田敏志, 新井彰, 鳴沢真也, 今村和義, 小木美奈子, 宮地竹史, 花山秀和, 綾仁一哉, 前野将太, 藤井貢, 大島修, 赤澤秀彦, 伊藤弘, 塩川和彦
Organizer
日本天文学会2013年秋季年会
Place of Presentation
東北大学
Year and Date
20120910-12
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[Presentation] 前主系列星V773 Tau の多波長同時観測2011
Author(s)
松村和典, 飯塚亮, 坪井陽子(中央大学), 梅本智文, 廣田朋也(国立天文台), 時政典孝(西はりま天文台公園), 丹羽隆裕(八戸工業高専), 衣笠健三, 高橋英則, 橋本修(ぐんま天文台), 綾仁一哉(美星天文台), 三澤浩昭, 土屋史紀(東北大学), 野上大作, 前原裕之, 蔵本哲也(京都大学), 磯貝瑞希, 新井彰(京都産業大学), 大島修(岡山県立水島工業高等学校), 花山秀和, 福島英雄(石垣島天文台), 永井和男, 伊藤弘, 塩川和彦, 藤井貢
Organizer
日本天文学会2011年秋季年会
Place of Presentation
鹿児島大学
Year and Date
20110919-22
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