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THE MAGNETOHYDRODYNAMICAL MODEL OF KILOHERTZ QUASI-PERIODIC OSCILLATIONS IN NEUTRON STAR LOW-MASS X-RAY BINARIES (II)
Shi, CS; 张双南;Zhang, SN; Li, XD
2014
发表期刊ASTROPHYSICAL JOURNAL
卷号791期号:1页码:16
摘要We study the kilohertz quasi-periodic oscillations (kHz QPOs) in neutron star low-mass X-ray binaries (LMXBs) with a new magnetohydrodynamics (MHD) model, in which the compressed magnetosphere is considered. The previous MHD model is reexamined and the relation between the frequencies of the kHz QPOs and the accretion rate in LMXBs is obtained. Our result agrees with the observations of six sources (4U 0614+09, 4U 1636-53, 4U 1608-52, 4U 1915-15, 4U 1728-34, and XTE 1807-294) with measured spins. In this model, the kHz QPOs originate from the MHD waves in the compressed magnetosphere. The single kHz QPOs and twin kHz QPOs are produced in two different parts of the accretion disk and the boundary is close to the corotation radius. The lower QPO frequency in a frequency-accretion rate diagram is cut off at a low accretion rate and the twin kHz QPOs encounter a top ceiling at a high accretion rate due to the restriction of the innermost stable circular orbit.
关键词accretion, accretion disks magnetohydrodynamics (MHD) stars: neutron X-rays: binaries
学科领域Astronomy & Astrophysics
DOI10.1088/0004-637X/791/1/16
收录类别SCI
WOS记录号WOS:000339657700016
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224847
专题粒子天体物理中心
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Shi, CS,张双南;Zhang, SN,Li, XD. THE MAGNETOHYDRODYNAMICAL MODEL OF KILOHERTZ QUASI-PERIODIC OSCILLATIONS IN NEUTRON STAR LOW-MASS X-RAY BINARIES (II)[J]. ASTROPHYSICAL JOURNAL,2014,791(1):16.
APA Shi, CS,张双南;Zhang, SN,&Li, XD.(2014).THE MAGNETOHYDRODYNAMICAL MODEL OF KILOHERTZ QUASI-PERIODIC OSCILLATIONS IN NEUTRON STAR LOW-MASS X-RAY BINARIES (II).ASTROPHYSICAL JOURNAL,791(1),16.
MLA Shi, CS,et al."THE MAGNETOHYDRODYNAMICAL MODEL OF KILOHERTZ QUASI-PERIODIC OSCILLATIONS IN NEUTRON STAR LOW-MASS X-RAY BINARIES (II)".ASTROPHYSICAL JOURNAL 791.1(2014):16.
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