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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
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume466Issue:1Pages:1111-1117
AbstractWe 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)).
SubtypeArticle
KeywordBinaries: Close Accretion Stars: Neutron Accretion Discs X-rays: Binaries
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational 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
WOS KeywordQUASI-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
Indexed BySCI
Language英语
Funding OrganizationNational 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 Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000398112400076
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8231
Collection射电天文研究部
Affiliation1.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
Recommended Citation
GB/T 7714
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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