A study of accretion discs around rapidly rotating neutron stars in general relativity and its applications to four Low Mass X-ray Binaries

Details A study of accretion discs around rapidly rotating neutron stars in general relativity and its applications to four Low Mass X-ray Binaries A study of accretion discs around rapidly rotating neutron stars in general relativity and its applications to four Low Mass X-ray Binaries

2001-12-07

arxiv.org/abs/astro-ph/0112178v1

Astronomy and Astrophysics

Astrophysics

9 pages, 5 tables, accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20011758

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.

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