A study of accretion discs around rapidly rotating neutron stars in general relativity and its applications to four low mass X-ray binaries

Bhattacharyya, Sudip (2001) A study of accretion discs around rapidly rotating neutron stars in general relativity and its applications to four low mass X-ray binaries. In: Astronomy & Astrophysics, A&A (383). pp. 524-532.

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Abstract

We calculate the accretion disc temperature profiles, disc luminosities and boundary layer luminosities for rapidly rotating neutron stars considering the full effect of general relativity. We compare the theoretical values of these quantities with their values inferred from EXOSAT data for four low mass X-ray binary sources: XB 1820-30, GX 17+2, GX 9+1 and GX 349+2 and constrain the values of several properties of these sources. According to our calculations, the neutron stars in GX 9+1 and GX 349+2 are rapidly rotating and stiffer equations of state are unfavoured.

Item Type:	Journal Article
Publication:	Astronomy & Astrophysics
Publisher:	EDP Sciences
Additional Information:	Copyright of this article belongs to EDP Sciences.
Keywords:	accretion, accretion discs -- relativity -- stars;neutron -- stars;rotation -- X-rays;binaries
Department/Centre:	Division of Physical & Mathematical Sciences > Joint Astronomy Programme
Date Deposited:	02 Jun 2006
Last Modified:	19 Sep 2010 04:28
URI:	http://eprints.iisc.ac.in/id/eprint/7418

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