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Title: A general relativistic calculation of boundary layer and disc luminosity for accreting non-magnetic neutron stars in rapid rotation
Authors: Thampan, Arun V.
Datta, Bhaskar
Issue Date: 1998
Publisher: Blackwell Publishing for the Royal Astronomical Society
Citation: Monthly Notices of the Royal Astronomical Society, 1998, Vol.297, p570-578
Abstract: We calculate the disc and boundary layer luminosities for accreting rapidly rotating neutron stars with low magnetic fields in a fully general relativistic manner. Rotation increases the disc luminosity and decreases the boundary layer luminosity. A rapid rotation of the neutron star substantially modifies these quantities as compared with the static limit. For a neutron star rotating close to the centrifugal mass shed limit, the total luminosity has contribution only from the extended disc. For such maximal rotation rates, we find that well before the maximum stable gravitational mass configuration is reached, there exists a limiting central density, for which particles in the innermost stable orbit will be more tightly bound than those at the surface of the neutron star. We also calculate the angular velocity profiles of particles in Keplerian orbits around the rapidly rotating neutron star. The results are illustrated for a representative set of equation of state models of neutron star matter.
Description: Restricted Access. An open-access version is available at NASA ADS(the alternative location)
ISSN: 0035-8711
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Copyright: 1998 The Royal Astronomical Society
Appears in Collections:Research Papers (A&A)

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