On the Nature of the First Transient Z Source XTE J1701–462   Its Accretion Disk Structure Neutron Star Magnetic Field Strength  and Hard Tail

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	On the Nature of the First Transient Z Source XTE J1701–462 Its Accretion Disk Structure Neutron Star Magnetic Field Strength and Hard Tail
	G.Q.Ding; S.N.Zhang; N.Wang; J.L.Qu; S.P.Yan
刊名	The Astronomical Journal
	2011-08
卷号	142 期号:34 页码:文献号：34
关键词	binaries: general stars: individual (XTE J1701-462) stars: neutron X-rays: binaries
ISSN号	0004-6256
通讯作者	dinggq@xao.ac.cn
英文摘要	Using data from the Rossi X-Ray Timing Explorer, we investigate the spectral evolution along a "Z" track and a "v" track on the hardness-intensity diagrams of the first transient Z source XTE J1701-462. The spectral analyses suggest that the inner disk radius depends on the mass accretion rate, in agreement with the model prediction, R-in alpha (M) over dot(disk)(2/7), for a radiation-pressure-dominated accretion disk interacting with the magnetosphere of a neutron star (NS). The changes in the disk mass accretion rate (M) over dot(disk) are responsible for the evolution of the "Z" or "v" track. Radiation pressure thickens the disk considerably and also produces significant outflows. The NS surface magnetic field strength, derived from the interaction between the magnetosphere and the radiation-pressure-dominated accretion disk, is similar to(1-3) x 10(9) G, which is possibly between normal atoll and Z sources. A significant hard tail is detected in the horizontal branches and we discuss several possible origins of the hard tail.
学科主题	致密天体、高能和基础物理
收录类别	SCI
资助信息	Natural Science Foundation of Xinjiang Uygur Autonomous Region of China (Program 200821164);program of the Light in Chinese Western Region (LCWR) under grant LHXZ 200802 provided by Chinese Academy of Sciences (CAS);National Basic Research Program of China (973 Program 2009CB824800);National Science Foundation of China under grant nos. 10821061, 10733010, and 10725313
语种	英语
WOS记录号	WOS:000292888200001
公开日期	2013-03-05
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/9]
专题	高能天体物理研究团组新疆天文台_射电天文研究室新疆天文台_其它
推荐引用方式 GB/T 7714	G.Q.Ding,S.N.Zhang,N.Wang,et al. On the Nature of the First Transient Z Source XTE J1701–462 Its Accretion Disk Structure Neutron Star Magnetic Field Strength and Hard Tail[J]. The Astronomical Journal,2011,142(34):文献号：34.
APA	G.Q.Ding,S.N.Zhang,N.Wang,J.L.Qu,&S.P.Yan.(2011).On the Nature of the First Transient Z Source XTE J1701–462 Its Accretion Disk Structure Neutron Star Magnetic Field Strength and Hard Tail.The Astronomical Journal,142(34),文献号：34.
MLA	G.Q.Ding,et al."On the Nature of the First Transient Z Source XTE J1701–462 Its Accretion Disk Structure Neutron Star Magnetic Field Strength and Hard Tail".The Astronomical Journal 142.34(2011):文献号：34.