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	Insight/HXMT view of high mass X-ray binary GX 301-2
	Rameya Epili, Prahlad; Wang, Wei
	2021
卷号	43页码:1593
英文摘要	We present the analysis of many Insight/HXMT observations of high-mass X-ray binary pulsar GX 301-2 covering multiple orbital phases. The 3-60 keV spectra could be well explained with an absorbed high-energy exponential cutoff continuum model in addition to multiple gaussian components to account for the Iron line complex in 6-7 keV. During its periastron passage, we have found that the column density variations near the pulsar is of two orders of magnitude higher (~10^{24}~cm$^{2}$) compared to that of the near apastron and post-apastron phases. These large variations in column density could be associated with a pre-periastron (PP) flare as has been speculated previously. We have also found that the soft X-ray pulse profiles at the PP phase are multi-peaked with absorption like dips. The phase-averaged spectroscopy study also reveal an evidence of cyclotron line in the range 40-45 keV in the spectra showing negative variation with the hard X-ray flux in 30-60 keV. The strong orbital variation of GX 301-2 as seen from the spectral and timing studies will be discussed supporting the scenario of accretion from the dense stellar wind plus an accretion stream near the pulsar.
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/289781]
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	Rameya Epili, Prahlad,Wang, Wei. Insight/HXMT view of high mass X-ray binary GX 301-2[J],2021,43:1593.
APA	Rameya Epili, Prahlad,&Wang, Wei.(2021).Insight/HXMT view of high mass X-ray binary GX 301-2.,43,1593.
MLA	Rameya Epili, Prahlad,et al."Insight/HXMT view of high mass X-ray binary GX 301-2".43(2021):1593.

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