Profiles of spectral lines of an accretion ring around a Kerr black hole |
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| Authors: | J L Zhang S P Xiang J F Lu |
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| Institution: | (1) Astrophysics Research Division, University of Science and Technology of China, Hefei, China;(2) Dipartimento di Fisica, Università di Roma, Roma, Italy;(3) International School for Advanced Studies, Trieste, Italy |
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| Abstract: | Profiles of spectral lines emitted from an accretion ring around an object with strong gravitational field should be affected by Doppler shift, gravitational redshift, and deflection of light. Taking these effects into account, precise line profile of a Keplerian ring around a Kerr black hole for a distant observer is obtained by solving the kinetic equation of photons. |
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