Importance of synchrotron cooling in self-consistent spherical accretion models

Details Importance of synchrotron cooling in self-consistent spherical accretion models Importance of synchrotron cooling in self-consistent spherical accretion models

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...400..170m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 400, no. 1, p. 170-174.

Astronomy and Astrophysics

Astronomy

3

Accretion Disks, Black Holes (Astronomy), Radiant Cooling, Synchrotron Radiation, Astronomical Models, Magnetic Field Reconnection, Radiative Transfer

Scientific paper

We present a self-consistent model of stationary, spherical accretion onto black holes which generalizes the results of Nobili et al. (1991) to include the radiative effects of a frozen-in magnetic field. Cyclosynchrotron cooling is found to be important in the inner region of the flow, lowering the temperature and producing an increase of the emitted luminosity with respect to unmagnetized solutions. Preheating effects, due to strong Comptonization, limit, however, the existence of magnetic accretion models to very low values of the magnetic field, typically a few percent of the equipartition value, and luminosity never exceeds 0.01 L sub Edd.

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