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Title: General relativistic spectra of accretion discs around rapidly rotating neutron stars: effect of light bending
Authors: Bhattacharyya, S
Bhattacharya, D
Thampan, A. V
Keywords: Accretion;Accretion Discs;Relativity;Stars: Neutron;Stars: Rotation;X-Rays: Binaries
Issue Date: Aug-2001
Publisher: Royal Astronomical Society
Citation: Monthly Notices of the Royal Astronomical Society, Vol. 325, No. 3, pp. 989 - 994
Abstract: 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 an 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.
ISSN: 0035-8711
Appears in Collections:IIAP Publications

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