Abstract
The relativistic spherical accretion onto ‘black holes’ is considered. It is shown that electron heat conductivity and ion viscosity increase the ion temperature by roughly two orders of magnitude over the electron temperature at Schwarzschild radius. As a result, the ‘knee’ arise in gamma-radiation spectrum at 10–30 MeV. The role of magnetic field, electron-positron pairs production and generation of absorption lines in spectrum briefly discussed.
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Vainer, B.V., Panov, V.N. The relativistic spherical accretion by black holes. Astrophys Space Sci 113, 1–24 (1985). https://doi.org/10.1007/BF00650267
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DOI: https://doi.org/10.1007/BF00650267