Investigation of the emission radii of kHz QPOs for the accreting millisecond X-Ray pulsars, Atoll and Z sources

	Investigation of the emission radii of kHz QPOs for the accreting millisecond X-Ray pulsars, Atoll and Z sources
	Wang, D. H.1,2,3; Chen, L.2; Zhang, C. M.3; Lei, Y. J.3; Qu, J. L.4; Song, L. M.4
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2015-12-01
卷号	454 期号:2 页码:1231-1237
关键词	accretion accretion discs binaries: close stars: neutron X-rays: binaries
英文摘要	We infer the emission positions of twin kilohertz quasi-periodic oscillations (kHz QPOs) in neutron star low-mass X-ray binaries (NS-LMXBs) based on the Alfven wave oscillation model (AWOM). For most sources, the emission radii of kHz QPOs cluster around a region of 16-19 km with the assumed NS radii of 15 km. Cir X-1 has the larger emission radii of 23 similar to 38 km than those of the other sources, which may be ascribed to its large magnetosphere-disc radius or strong NS surface magnetic field. SAX J1808.4-3658 is also a particular source with the relative large emission radii of kHz QPOs of 20 similar to 23 km, which may be due to its large inferred NS radius of 18 similar to 19 km. The emission radii of kHz QPOs for all the sources are larger than the NS radii, and the possible explanations of which are presented. The similarity of the emission radii of kHz QPOs (similar to 16-19 km) for both the low/high luminosity Atoll/Z sources is found, which indicates that both sources share the similar magnetosphere-disc radii.
收录类别	SCI
语种	英语
WOS记录号	WOS:000367997700005
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5475]
专题	国家天文台_光学天文研究部
作者单位	1.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China 2.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 4.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, D. H.,Chen, L.,Zhang, C. M.,et al. Investigation of the emission radii of kHz QPOs for the accreting millisecond X-Ray pulsars, Atoll and Z sources[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,454(2):1231-1237.
APA	Wang, D. H.,Chen, L.,Zhang, C. M.,Lei, Y. J.,Qu, J. L.,&Song, L. M..(2015).Investigation of the emission radii of kHz QPOs for the accreting millisecond X-Ray pulsars, Atoll and Z sources.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,454(2),1231-1237.
MLA	Wang, D. H.,et al."Investigation of the emission radii of kHz QPOs for the accreting millisecond X-Ray pulsars, Atoll and Z sources".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 454.2(2015):1231-1237.