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
复制标题
快速旋转中子星周围吸积盘的广义相对论光谱：光弯曲效应
DOI：
10.1046/j.1365-8711.2001.04426.x
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发表时间：
2001
影响因子：
4.8
通讯作者：
A. V. Thampan
中科院分区：
文献类型：
--
作者：
S. Bhattacharyya;D. Bhattacharya;A. V. Thampan
我们展示了远处观察者所看到的快速旋转中子星周围吸积盘的计算光谱。我们的计算是在完全广义相对论框架中进行的，并精确处理旋转。我们考虑多普勒频移、引力红移和光弯曲效应来计算观测到的光谱。我们发现光的弯曲显着改变了光谱的高能部分。还提供了缓慢旋转中子星的计算光谱。这些结果对于模拟观测到的含有快速旋转中子星的低质量 X 射线双星的 X 射线光谱非常重要。
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.