Turbulent accretion onto massive black holes

Details Turbulent accretion onto massive black holes Turbulent accretion onto massive black holes

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...230..243m&link_type=abstract

Astrophysical Journal, Part 1, vol. 230, May 15, 1979, p. 243-248.

Astronomy and Astrophysics

Astronomy

35

Black Holes (Astronomy), Compton Effect, Radiation Spectra, Stellar Mass Accretion, Synchrotron Radiation, Bremsstrahlung, Convection, Gas Temperature, Optical Thickness, Temperature Profiles, Turbulence Effects

Scientific paper

Turbulent spherical accretion onto massive black holes (masses of the order of 1 million to 1 billion solar masses) is considered. Temperatures of the order of 1 billion to 10 billion K are found in the inner zone, where the synchrotron frequencies are 10 to the 13th to 10 to the 14th Hz. If the optical depth of the hole atmosphere is about unity, Comptonization can produce a power-law spectrum of index about unity from the synchrotron frequencies up to medium X-rays. If the optical depth is greater than or about equal to unity, convection of radiation into the hole becomes important at small radii, reducing the efficiency of emission. The results are briefly compared with the observations.

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