Spectral state transitions in low-mass X-ray binaries - the effect of hard and soft irradiation

	Spectral state transitions in low-mass X-ray binaries - the effect of hard and soft irradiation
	Liu BF(刘碧芳)1,2 ; Meyer, F 2; Meyer-Hofmeister, E 2
刊名	ASTRONOMY & ASTROPHYSICS
	2005-11
卷号	442 期号:2 页码:555-562
关键词	accretion, accretion disks black hole physics X-rays : binaries stars : neutron stars : individual : Aql X-1, GX339-4, XTE J1550-564, XTE J1650-500
ISSN号	0004-6361
通讯作者	Liu, BF (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	In neutron star and black hole X-ray binaries the transitions between the two spectral states, hard and soft, signal the change between accretion via a hot advection-dominated flow(ADAF) and disk accretion. In a few cases the hard/soft transition was observed during the rise to the nova outburst, but in most cases only the soft/hard transition during the luminosity decrease. Surprisingly the luminosities at the second transition are always lower by a factor of 3 to 5. A model for this hysteresis was presented in a preceding paper where it was shown that this switch in the accretion mode at different mass accretion rates and therefore different luminosities is caused by the different amount of Compton cooling or heating of the accretion disk corona as it is irradiated by hard or soft radiation from the central light source, respectively. We now give detailed results for the dependence on the hardness of this radiation and the radiation efficiency. We further discuss the influence of the inclination and a possible warping of the disk on the observed hysteresis.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	NOVA-MUSCAE 1991 ; CORONAL FLOW ; THIN DISK ; ACCRETION DISKS ; GALACTIC-CENTER ; 2000 OUTBURST ; LIGHT CURVES ; COOL DISK ; GX 339-4 ; EVOLUTION
收录类别	SCI ; EI
原文出处	http://www.aanda.org/articles/aa/abs/2005/41/aa3207-05/aa3207-05.html
语种	英语
WOS记录号	WOS:000232404400022
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4941]
专题	云南天文台_高能天体物理研究组
作者单位	1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming 650011, PR China 2.Max-Planck-Institut für Astrophysik, Karl-Schwarzschildstr. 1, 85740 Garching, Germany
推荐引用方式 GB/T 7714	Liu BF,Meyer, F,Meyer-Hofmeister, E. Spectral state transitions in low-mass X-ray binaries - the effect of hard and soft irradiation[J]. ASTRONOMY & ASTROPHYSICS,2005,442(2):555-562.
APA	Liu BF,Meyer, F,&Meyer-Hofmeister, E.(2005).Spectral state transitions in low-mass X-ray binaries - the effect of hard and soft irradiation.ASTRONOMY & ASTROPHYSICS,442(2),555-562.
MLA	Liu BF,et al."Spectral state transitions in low-mass X-ray binaries - the effect of hard and soft irradiation".ASTRONOMY & ASTROPHYSICS 442.2(2005):555-562.