A Model for kHz QPOs in LMXBs

Details A Model for kHz QPOs in LMXBs A Model for kHz QPOs in LMXBs

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...6e..28l&link_type=abstract

Neutron Stars and Black Holes in Star Clusters, 26th meeting of the IAU, Joint Discussion 6, 17-18 August 2006, Prague, Czech Re

Physics

Scientific paper

Introduction: The nature of kilo-Hertz quasi-periodic oscillations (kHz QPOs) in low-mass X-ray binaries remains to be a mystery. Methods: Here we suggest that the upper kHz QPO frequencies are the rotational frequency and the lower kHz QPOs the standing kink modes of loop oscillations at the inner edge of the accretion disk, respectively. Results: Taking into account the interaction between the neutron star magnetic field and the disk, this model naturally relates the twin QPO frequencies with the star's spin frequencies. Discussion: We have applied the model to four X-ray sources with kHz QPOs detected simultaneously and known spin frequencies.

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