The spatial distribution of circumstellar material of the wind-fed system GX 301-2
文献类型：期刊论文
| 作者 | Zheng, Xueying1,2; Liu, Jiren1 ; Gou, Lijun1,2
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 491期号:4页码:4802-4806 |
| ISSN号 | 0035-8711 |
| 关键词 | circumstellar matter stars: individual: GX 301-2 (SWIFT J1226.6-6244) stars: winds outflows X-rays: binaries |
| DOI | 10.1093/mnras/stz3327 |
| 英文摘要 | The distribution of the circumstellar material in systems of supergiant X-ray binaries (SgXBs) is complex and not well probed observationally. We report a detailed study of the spatial distribution of the Fe K alpha-emitting material in the wind-fed system GX 301-2, by measuring the time delay between the Fe K alpha line and the hard X-ray continuum (7.8-12 keV) using the cross-correlation method, based on XMM-Newton observation. We found that to obtain the true time delay, it is crucial to subtract the underlying continuum of the Fe K alpha line. The measured size of the Fe K alpha-emitting region over the whole observation period is 40 +/- 20 light-seconds. It is 5 times larger than the accretion radius estimated from a quasi-isotropic stellar wind, but consistent with the one estimated from a tidal stream, which could be the dominant mass-loss mechanism of GX 301-2 as inferred from the orbital distribution of the absorption column density previously. The measured time delay of the quiescent period is a little smaller than those of the flare periods, revealing the unsteady behaviour of the accretion flow in GX 301-2. Statistical and detailed temporal studies of the circumstellar material in SgXBs are expected for a large sample of SgXBs with future X-ray missions, such as Athena and eXTP. |
| WOS关键词 | STELLAR WIND ; RAY ; ACCRETION ; SPECTROSCOPY |
| 资助项目 | National Natural Science Foundation of China (NSFC)[11773035] ; National Program on Key Research and Development Project[2016YFA0400804] ; NSFC[U1838114] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB23040100] ; ESA Member States (NASA) ; USA (NASA) |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000512310600017 |
| 资助机构 | National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; NSFC ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; ESA Member States (NASA) ; ESA Member States (NASA) ; USA (NASA) ; USA (NASA) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; NSFC ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; ESA Member States (NASA) ; ESA Member States (NASA) ; USA (NASA) ; USA (NASA) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; NSFC ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; ESA Member States (NASA) ; ESA Member States (NASA) ; USA (NASA) ; USA (NASA) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; NSFC ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; ESA Member States (NASA) ; ESA Member States (NASA) ; USA (NASA) ; USA (NASA) |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/54144]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Zheng, Xueying; Liu, Jiren |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, Datun Rd A20, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Datun Rd A20, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Xueying,Liu, Jiren,Gou, Lijun. The spatial distribution of circumstellar material of the wind-fed system GX 301-2[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,491(4):4802-4806. |
| APA | Zheng, Xueying,Liu, Jiren,&Gou, Lijun.(2020).The spatial distribution of circumstellar material of the wind-fed system GX 301-2.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,491(4),4802-4806. |
| MLA | Zheng, Xueying,et al."The spatial distribution of circumstellar material of the wind-fed system GX 301-2".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 491.4(2020):4802-4806. |
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来源：国家天文台
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