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The bright black hole X-ray binary 4U 1543-47 during 2021 outburst. A clear state transition from super-Eddington to sub-Eddington accretion revealed by Insight -HXMT

文献类型：期刊论文

作者Jin P(靳沛)1,2; Zhang GB(张国宝)1,2; Zhang, Yuexin3,4; Méndez, Mariano3; Qu, Jinlu2,5; Russell, David M.6; Wang JC(王建成)1,2; Zhang, Shuangnan2,5; Yang, Yi-Jung7,8; Jia, Shumei2,5
刊名Monthly Notices of the Royal Astronomical Society
出版日期2024-05-01
卷号530期号:1页码:929-946
关键词accretion, accretion discs stars: black holes stars: individual: 4U 1543 − 47 X rays: binaries
ISSN号0035-8711
DOI10.1093/mnras/stae686
产权排序第1完成单位
文献子类Journal article (JA)
英文摘要We present a detailed analysis of the observations with the Hard X-ray Modulation Telescope of the black hole X-ray transient 4U 1543-47 during its outburst in 2021. We find a clear state transition during the outburst decay of the source. Using previous measurements of the black hole mass and distance to the source, the source luminosity during this transition is close to the Eddington limit. The light curves before and after the transition can be fitted by two exponential functions with short ( ∼16 d) and long ( ∼130 d) decay time-scales, respectively. We detect strong reflection features in all observations that can be described with either the RELXILLNS or REFLIONX BB reflection models, both of which have a black-body incident spectrum. In the super- Eddington state, we observe a Comptonized component characterized by a low electron temperature of approximately 2.0 keV. We suggest that this component appears e xclusiv ely within the inner radiation-pressure-dominated region of the supercritical disc as a part of the intrinsic spectrum of the accretion disc itself. This feature vanishes as the source transitions into the sub- Eddington state. The emissivity index of the accretion disc in the reflection component is significantly different before and after the transition, ∼3.0-5.0 and ∼7.0-9.0 in the super- and sub-Eddington states, respectively. Based on the reflection geometry of returning disc radiation, the geometrically thicker the accretion disc, the smaller the emissivity index. Therefore, we propose that the transition is primarily driven by the change of the accretion flow from a supercritical to a thin disc configuration. © 2024 The Author(s).
学科主题天文学 ; 星系与宇宙学 ; 天体物理学 ; 高能天体物理学
URL标识查看原文
资助项目N/A
语种英语
资助机构N/A
源URL[http://ir.ynao.ac.cn/handle/114a53/27099]  
专题云南天文台_高能天体物理研究组
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, China;
2.University of Chinese Academy of Sciences, Beijing, 100049, China;
3.Kapteyn Astronomical Institute, University of Groningen, P.O. BOX 800, Groningen, NL-9700 AV, Netherlands;
4.Center for Astrophysics, Harvard & Smithsonian, 60 Garden St, Cambridge, MA, 02138, United States;
5.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China;
6.Center for Astrophysics and Space Science (CASS), New York University Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates;
7.Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong;
8.Laboratory for Space Research, The University of Hong Kong, Hong Kong;
9.School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo, 255000, China
推荐引用方式
GB/T 7714		 Jin P,Zhang GB,Zhang, Yuexin,et al. The bright black hole X-ray binary 4U 1543-47 during 2021 outburst. A clear state transition from super-Eddington to sub-Eddington accretion revealed by Insight -HXMT[J]. Monthly Notices of the Royal Astronomical Society,2024,530(1):929-946.
APA 靳沛.,张国宝.,Zhang, Yuexin.,Méndez, Mariano.,Qu, Jinlu.,...&Liu, Hexin.(2024).The bright black hole X-ray binary 4U 1543-47 during 2021 outburst. A clear state transition from super-Eddington to sub-Eddington accretion revealed by Insight -HXMT.Monthly Notices of the Royal Astronomical Society,530(1),929-946.
MLA 靳沛,et al."The bright black hole X-ray binary 4U 1543-47 during 2021 outburst. A clear state transition from super-Eddington to sub-Eddington accretion revealed by Insight -HXMT".Monthly Notices of the Royal Astronomical Society 530.1(2024):929-946.

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