Discovery of a pulsating Fe K alpha line in GX 301-2
文献类型：期刊论文
| 作者 | Liu, Jiren2 ; Soria, Roberto1,3,4; Qiao, Erlin2,3; Liu, Jifeng2,3
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2018-11-01 |
| 卷号 | 480期号:4页码:4746-4753 |
| 关键词 | pulsars: individual: GX 301-2 X-rays: binaries |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/sty2180 |
| 英文摘要 | We report on the detection of a pulsating Fe K alpha line in the High Mass X-ray Binary (HMXB) GX 301-2, from a 40-ks Chandra observation near periastron. The pulsations in the Fe K alpha emission appeared only in the first 7 ks of the observation, with a period and phase profile similar to those of the continuum. The presence of pulsed fluorescent lines is an unusual property in HMXBs. After 7 ks, the continuum flux increased by a factor of three, the Fe K alpha flux increased only by about 10 per cent, and the pulsating signal in the line disappeared. Finally, in the second half of the observation, both the continuum and the line flux dropped by a similar factor of 2. We suggest that the pulsating component of the Fe K alpha line is coming from a transient non-isotropic distribution of dense gas around the neutron star, for example, an accretion stream induced by periastron passage, or from the illuminated surface of the donor star. |
| WOS关键词 | X-RAY BINARIES ; PHASE-RESOLVED SPECTROSCOPY ; STELLAR WIND ACCRETION ; INTENSITY VARIATIONS ; HIGH-RESOLUTION ; PULSE-PHASE ; GX-301-2 ; SPECTRUM ; ASCA ; EMISSION |
| 资助项目 | NSFC[11203032] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000449617100036 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | NSFC ; NSFC ; NSFC ; NSFC ; NSFC ; NSFC ; NSFC ; NSFC |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/23360]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Liu, Jiren |
| 作者单位 | 1.Curtin Univ, Int Ctr Radio Astron Res, GPO Box U1987, Perth, WA 6845, Australia 2.Natl Astron Observ, 20A Damn Rd, Beijing 100012, Peoples R China 3.Univ Chinese Acad Sci, Coll Astron & Space Sci, Beijing 100049, Peoples R China 4.Univ Sydney, Sch Phys A28, Sydney Inst Astron, Sydney, NSW 2006, Australia |
| 推荐引用方式 GB/T 7714 | Liu, Jiren,Soria, Roberto,Qiao, Erlin,et al. Discovery of a pulsating Fe K alpha line in GX 301-2[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,480(4):4746-4753. |
| APA | Liu, Jiren,Soria, Roberto,Qiao, Erlin,&Liu, Jifeng.(2018).Discovery of a pulsating Fe K alpha line in GX 301-2.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,480(4),4746-4753. |
| MLA | Liu, Jiren,et al."Discovery of a pulsating Fe K alpha line in GX 301-2".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 480.4(2018):4746-4753. |
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来源：国家天文台
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