The X-ray bursts within the 2010 outburst of the accreting millisecond X-ray pulsar SAX J1748.9-2021 | |
Chen, Yupeng2; Qu, Jinlu2; Li, Zhibing1; Ding, Guoqiang1; Wu, Ziwei1,3 | |
刊名 | ASTROPHYSICS AND SPACE SCIENCE |
2018-07-01 | |
卷号 | 363期号:7页码:146 |
关键词 | Stars: Neutron X-rays: Bursts Individual (Sax J1748.9-2021) |
ISSN号 | 0004-640X |
DOI | 10.1007/s10509-018-3367-1 |
产权排序 | 1 |
文献子类 | Article |
英文摘要 | With the observations from Rossi X-ray Timing Explorer, we search and study the X-ray bursts of accreting millisecond X-ray pulsar SAX J1748.9-2021 during its 2010 outburst. We find 13 X-ray bursts, including 12 standard type-I X-ray bursts and an irregular X-ray burst which lacks cooling tail. During the outburst, the persistent emission occurred at . We use a combination model of a blackbody (BB), a powerlaw, and a line component to fit the persistent emission spectra. Another BB is added into the combination model to account for the emission of the X-ray bursts due to the thermonuclear burning on the surface of the neutron star. Finally, we modify the combination model with a multiplicative factor , plus a BB to fit the spectra during the X-ray bursts. It is found that the is inversely correlated with the burst flux in some cases. Our analysis suggests that the ignition depth of the irregular X-ray burst is obviously smaller than those of the type-I X-ray bursts. We argue that the detected type-I X-ray bursts originate from helium-rich or pure-helium environment, while the irregular X-ray burst originates from the thermonuclear flash in a shallow ocean. |
URL标识 | 查看原文 |
WOS关键词 | Globular-cluster Ngc-6440 ; Photospheric Radius Expansion ; Neutron-star ; Mass ; Discovery ; Transient ; Rates ; Pulsations ; Evolution ; Emission |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
WOS记录号 | WOS:000435076000002 |
资助机构 | National Program on Key Research and Development Project(2016YFA0400804, 2016YFA0400803) ; Natural Science Foundation of China(11673023, 11733009) ; 2014 Project of Xinjiang Uygur Autonomous Region of China for Flexibly Fetching in Upscale Talents |
内容类型 | 期刊论文 |
源URL | [http://ir.xao.ac.cn/handle/45760611-7/1931] |
专题 | 星系宇宙学研究团组 新疆天文台_射电天文研究室 |
通讯作者 | Wu, Ziwei |
作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Yupeng,Qu, Jinlu,Li, Zhibing,et al. The X-ray bursts within the 2010 outburst of the accreting millisecond X-ray pulsar SAX J1748.9-2021[J]. ASTROPHYSICS AND SPACE SCIENCE,2018,363(7):146. |
APA | Chen, Yupeng,Qu, Jinlu,Li, Zhibing,Ding, Guoqiang,&Wu, Ziwei.(2018).The X-ray bursts within the 2010 outburst of the accreting millisecond X-ray pulsar SAX J1748.9-2021.ASTROPHYSICS AND SPACE SCIENCE,363(7),146. |
MLA | Chen, Yupeng,et al."The X-ray bursts within the 2010 outburst of the accreting millisecond X-ray pulsar SAX J1748.9-2021".ASTROPHYSICS AND SPACE SCIENCE 363.7(2018):146. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论