Theoretical aspects of relativistic spectral features

Details Theoretical aspects of relativistic spectral features Theoretical aspects of relativistic spectral features

2006-09-23

arxiv.org/abs/astro-ph/0609645v1

Astron.Nachr.327:961-968,2006

Astronomy and Astrophysics

Astrophysics

To appear in Astronomische Nachrichten in the proceedings of the XMM-Newton workshop "Variable and Broad Iron Lines around Bla

Scientific paper

10.1002/asna.200610672

The inner parts of black-hole accretion discs shine in X-rays which can be monitored and the observed spectra can be used to trace strong gravitational fields in the place of emission and along paths of light rays. This paper summarizes several aspects of how the spectral features are influenced by relativistic effects. We focus our attention onto variable and broad emission lines, origin of which can be attributed to the presence of orbiting patterns -- spots and spiral waves in the disc. We point out that the observed spectrum can determine parameters of the central black hole provided the intrinsic local emissivity is constrained by theoretical models.

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