Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070

doi:10.1038/s41467-021-21169-5

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	Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070
	You, Bei; Tuo, Yuoli; Li, Chengzhe; Wang, Wei; Zhang, Shuang-Nan; Zhang, Shu; Ge, Mingyu; Luo, Chong; Liu, Bifang; Yuan, Weimin
刊名	Nature Communications
	2021
卷号	12 页码:1025
ISSN号	2041-1723
DOI	10.1038/s41467-021-21169-5
英文摘要	A black hole X-ray binary produces hard X-ray radiation from its corona and disk when the accreting matter heats up. During an outburst, the disk and corona co-evolves with each other. However, such an evolution is still unclear in both its geometry and dynamics. Here we report the unusual decrease of the reflection fraction in MAXI J1820+070, which is the ratio of the coronal intensity illuminating the disk to the coronal intensity reaching the observer, as the corona is observed to contrast during the decay phase. We postulate a jet-like corona model, in which the corona can be understood as a standing shock where the material flowing through. In this dynamical scenario, the decrease of the reflection fraction is a signature of the corona's bulk velocity. Our findings suggest that as the corona is observed to get closer to the black hole, the coronal material might be outflowing faster.
WOS记录号	WOS:000626747000005
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/289787]
专题	高能物理研究所_粒子天体物理中心硬X射线调制望远镜卫星
推荐引用方式 GB/T 7714	You, Bei,Tuo, Yuoli,Li, Chengzhe,et al. Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070[J]. Nature Communications,2021,12:1025.
APA	You, Bei.,Tuo, Yuoli.,Li, Chengzhe.,Wang, Wei.,Zhang, Shuang-Nan.,...&Zhu, Yue.(2021).Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070.Nature Communications,12,1025.
MLA	You, Bei,et al."Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070".Nature Communications 12(2021):1025.