Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-24T16:32:40.219Z Has data issue: false hasContentIssue false

The correlations between kHz and LF QPOs in the NSXBs

Published online by Cambridge University Press:  21 February 2013

Z. B. Li
Affiliation:
Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150, Science 1-Street, Urumqi, Xinjiang, 830011, China email: [email protected]
D. H. Wang
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Bejing, 100012, China
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We study the correlations between low frequency (LF) and kHz quasi-periodic oscillations (QPOs) for 20 neutron star X-ray bianaries (NSXBs). We find that both upper and lower kHz QPOs correlate with the LF QPOs. However, the correlations show 5 parallel branches in the kHz QPO frequency vs. LF QPO frequency relation diagram. We notice that the source will jump from one parallel branch to another when different harmonic frequency of the LF QPO is used to plot the correlation between kHz and LF QPOs. We infer that the parallel branches maybe due to the multi-harmonic QPOs in the NSXBs.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2013

References

Abramowicz, M. A., Karas, V., Kluzniak, W., Lee, W. H., & Rebusco, P. 2003, PASJ, 55, 467Google Scholar
Belloni, T., Psaltis, D., & van der Klis, M. 2002, ApJ, 572, 392Google Scholar
Kuznetsov, S. I. 2002, Astron. Lett., 28, 73Google Scholar
Miller, M. C., Lamb, F. K., & Psaltis, D. 1998, ApJ, 508, 791Google Scholar
van der Klis, M., Swank, J. H., Zhang, W., Jahoda, K., Morgan, E. H.et al. 1996, ApJ, 469, L1CrossRefGoogle Scholar
Stella, L. & Vietri, M. 1999, Phys. Rev. Lett., 82, 17Google Scholar
Zhang, C. M., Pan, Y. Y., Wang, J., Taani, A., & Zhao, Y. H. 2012, Int. J. Mod. Phys. Conf. Ser., 12, 414CrossRefGoogle Scholar
Zhang, C. M. 2004, A&A, 423, 401Google Scholar
Zhang, C. M., Yin, H. X., Zhao, Y. H., Song, L. M., & Zhang, F. 2006, MNRAS, 366, 1373Google Scholar