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Suzaku Observation of a New X-ray Outburst from the Accreting Young Star Illuminating McNeil's Nebula
https://jaxa.repo.nii.ac.jp/records/5002
https://jaxa.repo.nii.ac.jp/records/500297237e3a-a793-4ef2-9baa-a9b1cf71f552
名前 / ファイル | ライセンス | アクション |
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64574070.pdf (193.9 kB)
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Item type | 会議発表論文 / Conference Paper(1) | |||||
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公開日 | 2015-03-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Suzaku Observation of a New X-ray Outburst from the Accreting Young Star Illuminating McNeil's Nebula | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | stars: formation - stars: individual (V1647 Ori) - stars: pre-main-sequence - X-rays: stars | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
資源タイプ | conference paper | |||||
著者 |
Hamaguchi, Kenji
× Hamaguchi, Kenji× Grosso, Nicolas× Kastner, Joel H.× Weintraub, David A.× Richmond, Michael |
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著者所属(英) | ||||||
en | ||||||
CRESST and X-ray Astrophysics Laboratory NASA/GSFC | ||||||
著者所属(英) | ||||||
en | ||||||
Observatoire astronomique de Strasbourg, Universite de Strasbourg | ||||||
著者所属(英) | ||||||
en | ||||||
Rochester Institute of Technology | ||||||
著者所属(英) | ||||||
en | ||||||
Vanderbilt University | ||||||
著者所属(英) | ||||||
en | ||||||
Vanderbilt University | ||||||
出版者 | ||||||
出版者 | 宇宙航空研究開発機構 | |||||
出版者(英) | ||||||
出版者 | Japan Aerospace Exploration Agency (JAXA) | |||||
書誌情報 |
宇宙航空研究開発機構特別資料: en : JAXA Special Publication: The Energetic Cosmos; from Suzaku to ASTRO-H 巻 JAXA-SP-09-008E, p. 196-197, 発行日 2010-02-26 |
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会議概要(会議名, 開催地, 会期, 主催者等)(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The 3rd Suzaku international Conference "Energetic Cosmos : from Suzaku to ASTRO-H" (June 29-July 2, 2009. Grand Park Otaru Hotel), Otaru, Hokkaido Japan | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | A deeply embedded young stellar object (YSO) in the L1630 dark cloud has been observed undergoing a new strong optical/near-infrared outburst in 2008 August. The star, V1647 Ori, is the same star that underwent an accretion-powered outburst in 2003-2005; during this eruption we recorded, for the first time, a sustained X-ray outburst from a rapidly accreting YSO. The X-ray activity is suspected to be driven by a star-disk magnetic dynamo, accompanied by rapid mass accretion. However, observations that might support or refute this hypothesis have been limited in quantity and quality. We triggered a ToO observation of V1647 Ori with Suzaku for 40 ksec on 2008 October 8 using Director's Discretionary Time. During the observation, V1647 Ori showed a gradual flux decrease by a factor of 5 and then displayed an abrupt flux increase by an order of magnitude. The spectrum clearly displays emission from Helium-like iron, which is a signature of hot plasma (kT approximately 5 keV). Such X-ray properties were also seen in an XMM-Newton observation during the first outburst, but it has rarely been observed for other YSOs. Hence, the new outburst started in 2008 is likely driven by a mechanism similar to that of the first outburst. The Suzaku/XIS spectrum of V1647 Ori also shows a remarkable fluorescent iron K line with an equivalent width of approximately 600 eV. Such a large equivalent width indicates that a part of the incident X-ray emission that irradiates the circumstellar material is hidden from our line of sight. | |||||
内容記述(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Meeting sponsors: The University of Tokyo, The Institute of Physical and Chemical Research, The Japan Society for the Promotion of Science | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1349-113X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11984031 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: AA0064574070 | |||||
レポート番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | レポート番号: JAXA-SP-09-008E |