General relativistic spectra of accretion discs around rapidly rotating neutron stars: Effect of light bending

Details General relativistic spectra of accretion discs around rapidly rotating neutron stars: Effect of light bending General relativistic spectra of accretion discs around rapidly rotating neutron stars: Effect of light bending

2001-02-27

arxiv.org/abs/astro-ph/0102465v1

Mon.Not.Roy.Astron.Soc. 325 (2001) 989

Astronomy and Astrophysics

Astrophysics

6 pages, 5 figures, accepted for publication by MNRAS

Scientific paper

10.1046/j.1365-8711.2001.04426.x

We present computed spectra, as seen by a distant observer, from the accretion disc around a rapidly rotating neutron star. Our calculations are carried out in a fully general relativistic framework, with exact treatment of rotation. We take into account the Doppler shift, gravitational redshift and light bending effects in order to compute the observed spectrum. We find that light bending significantly modifies the high-energy part of the spectrum. Computed spectra for slowly rotating neutron stars are also presented. These results would be important for modelling the observed X-ray spectra of Low Mass X-ray Binaries containing fast spinning neutron stars.

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