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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
	Jin P(靳沛)1,2; Zhang GB(张国宝)1,2; Zhang, Yuexin3,4; Méndez, Mariano3; Qu, Jinlu2,5; Russell, David M6; Wang JC(王建成)1,2; Zhang, Shuangnan2,5; Yang, Yi-Jung7,8; Jia, Shumei2,5; Yang, Zixu9; Liu, Hexin2,5
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2024-04-05
卷号	530期号:1页码:929-946
DOI	10.1093/mnras/stae686
产权排序	第1完成单位
收录类别	SCI ; EI
关键词	accretion, accretion discs stars: black holes stars: individual: 4U 1543-47 X-rays: binaries
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 (similar to 16 d) and long (similar to 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 exclusively 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, similar to 3.0-5.0 and similar to 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.
资助项目	NSFC; China National Space Administration (CNSA); Chinese Academy of Sciences (CAS)[2021YFA0718500]; National Key R&D Program of China[U1838116]; National Natural Science Foundation of China (NSFC); China Manned Space Project[CSC 201906100030]; China Scholarship Council[019.231EN.021]; China Scholarship Council[184.034.002]; Dutch Research Council (NWO) Rubicon Fellowship; Dutch Research Council (NWO); NYU Abu Dhabi Research Institute grant CASS
项目资助者	NSFC ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS)[2021YFA0718500] ; National Key R&D Program of China[U1838116] ; National Natural Science Foundation of China (NSFC) ; China Manned Space Project[CSC 201906100030] ; China Scholarship Council[019.231EN.021, 184.034.002] ; Dutch Research Council (NWO) Rubicon Fellowship ; Dutch Research Council (NWO) ; NYU Abu Dhabi Research Institute grant CASS
语种	英语
学科领域	天文学 ; 星系与宇宙学 ; 天体物理学 ; 高能天体物理学
文章类型	Article
出版者	OXFORD UNIV PRESS
出版地	GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN	0035-8711
URL	查看原文
WOS记录号	WOS:001199894800012
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	REFLECTION FRACTION ; DISK ; EVOLUTION ; SPECTRA ; MODEL ; SPIN ; COMPTONIZATION ; RADIATION ; HARD ; ABSORPTION
EI入藏号	20241615913516
EI主题词	Exponential functions
EI分类号	657.2 Extraterrestrial Physics and Stellar Phenomena - 711 Electromagnetic Waves - 921 Mathematics - 931.5 Gravitation, Relativity and String Theory
引用统计	被引频次：1[WOS]   [WOS记录]     [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/27099
专题	高能天体物理研究组
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; 2.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China; 3.Kapteyn Astronomical Institute, University of Groningen, P.O. BOX 800, NL-9700 AV Groningen, the Netherlands; 4.Center for Astrophysics, Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138, USA; 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, UAE; 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
第一作者单位	中国科学院云南天文台
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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