The Spectral Features of Disk and Corona with Mass Evaporation in the Low/Hard State

doi:10.1093/pasj/62.3.661

YNAO OpenIR > 高能天体物理研究组

	The Spectral Features of Disk and Corona with Mass Evaporation in the Low/Hard State
	Qiao EL(乔二林)1,2,3 ; Liu BF(刘碧芳)1,3 ; Qiao, E (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
	2010
卷号	62 期号:3 页码:661-669
DOI	10.1093/pasj/62.3.661
产权排序	第1完成单位
收录类别	SCI ; EI
关键词	Stars: Individual (Xte j1118+480) Accretion X-rays: Stars Accretion Disk
摘要	We investigate the spectral features of accretion flows composed of an outer cool, optically thick disk and inner hot, optically thin, advection dominated accretion flows (ADAF) within the framework of disk and corona with mass evaporation (Liu et al. 2002a, ApJ, 575, 1 I 7). In this work, both the magnetic field and Compton scattering of soft photons from the disk by electrons in the corona are included to calculate the evaporation rates at different distances. The disk is truncated at the distance where the evaporation rate equals to the accretion rate [(sic)(evap)(r(tr)) = (sic)]. For a series of accretion rates, the corresponding truncation radii are calculated out, with which we are able to calculate the emergent spectra from the inner ADAF + outer disk + corona. At very low accretion rates, the spectra are similar to that of a pure ADAF because the disk is truncated at large distances. The disk component becomes important at high accretion rates since the truncation occurs at small distances. An anti-correlation between the Eddington ratio, xi L(0.5-25keV)/L(Edd), and the hard X-ray photon index, Gamma(3-25) keV in low/hard states is predicted by the model. Comparing the theoretical results with observations, we find that our model can reproduce the anti-correlation between the Eddington ratio, xi, and the hard X-ray photon index observed for the X-ray binary XTE J1118+480.
项目资助者	Doctoral Promotion Program between Chinese Academy of Sciences and Max Planck Society ; National Nature Science Foundation of China [10533050, 10773028] ; National Basic Research Program of China-973 Program [2009CB824800]
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-6264
URL	查看原文
归档日期	2010-06-18
WOS记录号	WOS:000279835200012
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	X-RAY BINARIES ; ADVECTION-DOMINATED ACCRETION ; ACTIVE GALACTIC NUCLEI ; TRANSIENT XTE J1118+480 ; BLACK-HOLE ACCRETION ; INNER COOL DISKS ; HARD STATE ; THIN DISK ; FLOW ; TRANSITION
EI入藏号	20215111360575
EI主题词	Evaporation
EI分类号	657.2 Extraterrestrial Physics and Stellar Phenomena - 802.3 Chemical Operations - 931.3 Atomic and Molecular Physics - 932.1 High Energy Physics
引用统计	被引频次：18[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/114a53/5001
专题	高能天体物理研究组中国科学院天体结构与演化重点实验室
通讯作者	Qiao, E (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories /Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, P. R. China 2.Graduate School of Chinese Academy of Sciences, Beijing 100049, P. R. China 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan 650011, P. R. 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	Qiao EL,Liu BF,Qiao, E . The Spectral Features of Disk and Corona with Mass Evaporation in the Low/Hard State[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2010,62(3):661-669.
APA	Qiao EL,Liu BF,&Qiao, E .(2010).The Spectral Features of Disk and Corona with Mass Evaporation in the Low/Hard State.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,62(3),661-669.
MLA	Qiao EL,et al."The Spectral Features of Disk and Corona with Mass Evaporation in the Low/Hard State".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 62.3(2010):661-669.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
The Spectral Feature（372KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览请求全文