The correlations between the spin frequencies and kHz QPOs of Neutron Stars in LMXBs

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dc.creatorYin, H. X.
dc.creatorZhang, C. M.
dc.creatorZhao, Y. H.
dc.creatorLei, Y. J.
dc.creatorQu, J. L.
dc.creatorSong, L. M.
dc.creatorZhang, F.
dc.date2007-05-10
dc.date2007-05-21
dc.date.accessioned2026-07-07T08:25:41Z
dc.date.available2026-07-07T08:25:41Z
dc.descriptionWe studied the correlations between spin frequencies and kilohertz quasi-periodic oscillations (kHz QPOs) in neutron star low mass X-ray binaries. The updated data of kHz QPOs and spin frequencies are statistically analyzed. We found that when two simultaneous kHz QPOs are present in the power spectrum, the minimum frequency of upper kHz QPO is at least 1.3 times larger than the spin frequency, i.e. ν_{s}<ν_{2min}/1.3. We also found that the average kHz QPO peak separation in 6 Atoll sources anti-correlates with the spin frequency in the form \lan\dn\ran = -(0.19\pm0.05)\ns+(389.40\pm21.67)Hz. If we shifted this correlation in the direction of the peak separation by a factor of 1.5, this correlation matches the data points of the two accretion powered millisecond X-ray pulsars, SAX J1808.4-3658 and XTE J1807-294.
dc.description4 pages, 2 figures, accepted for publication in A&A
dc.identifierhttps://arxiv.org/abs/0705.1431
dc.identifierhttp://arxiv.org/abs/0705.1431
dc.identifier2007,A&A,471,381
dc.identifierdoi:10.1051/0004-6361:20077069
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/136701
dc.subjectAstrophysics
dc.titleThe correlations between the spin frequencies and kHz QPOs of Neutron Stars in LMXBs
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