ON THE PROPERTIES OF INNER COOL DISKS IN THE HARD STATE OF BLACK HOLE X-RAY TRANSIENT SYSTEMS

	ON THE PROPERTIES OF INNER COOL DISKS IN THE HARD STATE OF BLACK HOLE X-RAY TRANSIENT SYSTEMS
	Taam, RE 1,2; Liu BF(刘碧芳)3 ; Meyer, F 4; Meyer-Hofmeister, E 4
刊名	ASTROPHYSICAL JOURNAL
	2008-11-20
卷号	688 期号:1 页码:527-536
关键词	accretion, accretion disks black hole physics stars: individual (GX 339-4) X-rays: binaries X-rays: stars
ISSN号	0004-637X
通讯作者	Taam, RE (reprint author), Northwestern Univ, Dept Phys & Astron, 2131 Tech Dr, Evanston, IL 60208 USA.
产权排序	第三完成单位
英文摘要	We investigate the formation of cool disks in the innermost regions of black hole X-ray transient systems in the low/hard state. Taking into account the combined cooling associated with the Compton and conductive energy transport processes in a corona, we describe the radial structure of a disk for a range of mass accretion rates. The mass flow in an optically thick inner region can be maintained by the condensation of matter from a corona, with the disk temperature and luminosity varying continuously as a function of the accretion rate. Although such a disk component can be present, the contribution of the optically thick disk component to the total luminosity can be small, since the mass flow due to condensation in the optically thick disk underlying the corona can be significantly less than the mass flow in the corona. The model is applied to the observations of the low/hard state of the black hole source GX 339-4 at luminosities of similar to 0.01L(Edd) and is able to explain the temperature of the thermal component at the observed luminosities. Since conductive cooling dominates Compton cooling at low mass accretion rates, the luminosity corresponding to the critical mass accretion rate above which a weak thermal disk component can be present in the low/hard state is estimated to be as low as 0.001L(Edd).
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	ADVECTION-DOMINATED ACCRETION ; CANDIDATE SWIFT J1753.5-0127 ; LOW/HARD STATE ; SPECTRAL STATE ; CORONAL FLOW ; THIN DISK ; TRANSITION ; EVAPORATION ; ADAF ; QUIESCENCE
收录类别	SCI
原文出处	http://iopscience.iop.org/0004-637X/688/1/527/
语种	英语
WOS记录号	WOS:000260769700041
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4960]
专题	云南天文台_高能天体物理研究组
作者单位	1.Northwestern University, Department of Physics and Astronomy, 2131 Tech Drive, Evanston, IL 60208 2.ASIAA/TIARA, P.O. Box 23-141, Taipei, 10617 Taiwan; ASIAA/National Tsing Hua University-TIARA, Hsinchu, Taiwan 3.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, China 4.Max-Planck-Institut für Astrophysik, Karl Schwarzschildstraße 1, D-85740 Garching, Germany
推荐引用方式 GB/T 7714	Taam, RE,Liu BF,Meyer, F,et al. ON THE PROPERTIES OF INNER COOL DISKS IN THE HARD STATE OF BLACK HOLE X-RAY TRANSIENT SYSTEMS[J]. ASTROPHYSICAL JOURNAL,2008,688(1):527-536.
APA	Taam, RE,Liu BF,Meyer, F,&Meyer-Hofmeister, E.(2008).ON THE PROPERTIES OF INNER COOL DISKS IN THE HARD STATE OF BLACK HOLE X-RAY TRANSIENT SYSTEMS.ASTROPHYSICAL JOURNAL,688(1),527-536.
MLA	Taam, RE,et al."ON THE PROPERTIES OF INNER COOL DISKS IN THE HARD STATE OF BLACK HOLE X-RAY TRANSIENT SYSTEMS".ASTROPHYSICAL JOURNAL 688.1(2008):527-536.