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Probing the accretion disc structure by the twin kHz QPOs and spins of neutron stars in LMXBs
Wang, D. H.1,2; Zhang, C. M.3; Lei, Y. J.3; Chen, L.4; Qu, J. L.5; Zhi, Q. J.1,2
2017-04-01
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号466期号:1页码:1111-1117
摘要We analyse the relation between the emission radii of twin kilohertz quasi-periodic oscillations (kHz QPOs) and the co-rotation radii of the 12 neutron star low-mass X-ray binaries (NS-LMXBs), which are simultaneously detected with the twin kHz QPOs and NS spins. We find that the average co-rotation radius of these sources is < rco > similar to 32 km, and all the emission positions of twin kHz QPOs lie inside the co-rotation radii, indicating that the twin kHz QPOs are formed in the spin-up process. It is noticed that the upper frequency of twin kHz QPOs is higher than NS spin frequency by >= 10 per cent, which may account for a critical velocity difference between the Keplerian motion of accretion matter and NS spin that is corresponding to the production of twin kHz QPOs. In addition, we also find that similar to 83 per cent of twin kHz QPOs cluster around the radius range of 15-20 km, which may be affected by the hard surface or the local strong magnetic field of the NS. As a special case, SAX J1808.4-3658 shows the larger emission radii of twin kHz QPOs of r similar to 21-24 km, which may be due to its low accretion rate or small measured NS mass (< 1.4M(circle dot)).
文章类型Article
关键词Binaries: Close Accretion Stars: Neutron Accretion Discs X-rays: Binaries
WOS标题词Science & Technology ; Physical Sciences
资助者National Basic Research Program of China(2012CB821800) ; National Basic Research Program of China(2012CB821800) ; National Natural Science Foundation of China NSFC(11173034 ; National Natural Science Foundation of China NSFC(11173034 ; Science and Technology Foundation of Guizhou Province(J[2015]2113 ; Science and Technology Foundation of Guizhou Province(J[2015]2113 ; Doctoral Starting up Foundation of Guizhou Normal University ; Doctoral Starting up Foundation of Guizhou Normal University ; Innovation Team Foundation of the Education Department of Guizhou Province([2014]35) ; Innovation Team Foundation of the Education Department of Guizhou Province([2014]35) ; 11173024 ; 11173024 ; LH[2016]7226) ; LH[2016]7226) ; 11303047 ; 11303047 ; 11565010) ; 11565010) ; National Basic Research Program of China(2012CB821800) ; National Basic Research Program of China(2012CB821800) ; National Natural Science Foundation of China NSFC(11173034 ; National Natural Science Foundation of China NSFC(11173034 ; Science and Technology Foundation of Guizhou Province(J[2015]2113 ; Science and Technology Foundation of Guizhou Province(J[2015]2113 ; Doctoral Starting up Foundation of Guizhou Normal University ; Doctoral Starting up Foundation of Guizhou Normal University ; Innovation Team Foundation of the Education Department of Guizhou Province([2014]35) ; Innovation Team Foundation of the Education Department of Guizhou Province([2014]35) ; 11173024 ; 11173024 ; LH[2016]7226) ; LH[2016]7226) ; 11303047 ; 11303047 ; 11565010) ; 11565010)
DOI10.1093/mnras/stw3134
关键词[WOS]QUASI-PERIODIC OSCILLATIONS ; X-RAY BINARIES ; ATOLL SOURCE STATES ; 4U 1636-53 ; TIMING FEATURES ; FREQUENCY CORRELATIONS ; MILLISECOND PULSAR ; ORBITAL RESONANCE ; SAX J1808.4-3658 ; PEAK SEPARATION
收录类别SCI
语种英语
资助者National Basic Research Program of China(2012CB821800) ; National Basic Research Program of China(2012CB821800) ; National Natural Science Foundation of China NSFC(11173034 ; National Natural Science Foundation of China NSFC(11173034 ; Science and Technology Foundation of Guizhou Province(J[2015]2113 ; Science and Technology Foundation of Guizhou Province(J[2015]2113 ; Doctoral Starting up Foundation of Guizhou Normal University ; Doctoral Starting up Foundation of Guizhou Normal University ; Innovation Team Foundation of the Education Department of Guizhou Province([2014]35) ; Innovation Team Foundation of the Education Department of Guizhou Province([2014]35) ; 11173024 ; 11173024 ; LH[2016]7226) ; LH[2016]7226) ; 11303047 ; 11303047 ; 11565010) ; 11565010) ; National Basic Research Program of China(2012CB821800) ; National Basic Research Program of China(2012CB821800) ; National Natural Science Foundation of China NSFC(11173034 ; National Natural Science Foundation of China NSFC(11173034 ; Science and Technology Foundation of Guizhou Province(J[2015]2113 ; Science and Technology Foundation of Guizhou Province(J[2015]2113 ; Doctoral Starting up Foundation of Guizhou Normal University ; Doctoral Starting up Foundation of Guizhou Normal University ; Innovation Team Foundation of the Education Department of Guizhou Province([2014]35) ; Innovation Team Foundation of the Education Department of Guizhou Province([2014]35) ; 11173024 ; 11173024 ; LH[2016]7226) ; LH[2016]7226) ; 11303047 ; 11303047 ; 11565010) ; 11565010)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000398112400076
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8231
专题射电天文研究部
作者单位1.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China
2.Guizhou Normal Univ, NAOC GZNU Astron Res & Educ Ctr, Guiyang 550001, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
5.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
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Wang, D. H.,Zhang, C. M.,Lei, Y. J.,et al. Probing the accretion disc structure by the twin kHz QPOs and spins of neutron stars in LMXBs[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,466(1):1111-1117.
APA Wang, D. H.,Zhang, C. M.,Lei, Y. J.,Chen, L.,Qu, J. L.,&Zhi, Q. J..(2017).Probing the accretion disc structure by the twin kHz QPOs and spins of neutron stars in LMXBs.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,466(1),1111-1117.
MLA Wang, D. H.,et al."Probing the accretion disc structure by the twin kHz QPOs and spins of neutron stars in LMXBs".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 466.1(2017):1111-1117.
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