Synchrotron radiation from spherically accreting black holes

Abstract

view Abstract Citations (61) References (19) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Synchrotron radiation from spherically accreting black holes Ipser, J. R. ; Price, R. H. Abstract An analytical and numerical study is presented for the spherical accretion of gas with frozen-in magnetic field onto a Schwarzschild black hole, over a range of accretion rates and hole diameters in which synchrotron emission is the dominant radiative mechanism. The models employed may be categorized as (1) synchrotron cooling negligible, (2) synchrotron cooling important but synchrotron self-absorption negligible, and (3) synchrotron cooling and self-absorption important. While in the first case gas temperatures become high near the horizon but luminosity efficiencies are low, the latter two cases have gas flow near the horizon which is essentially isothermal, and luminosity efficiencies are high. The analysis and results for the isothermal cases, (2) and (3), above show that they are valid only for moderate dissipative heating and synchrotron self-absorption. Publication: The Astrophysical Journal Pub Date: April 1982 DOI: 10.1086/159866 Bibcode: 1982ApJ...255..654I Keywords: Black Holes (Astronomy); Interstellar Magnetic Fields; Stellar Luminosity; Stellar Mass Accretion; Synchrotron Radiation; Astronomical Models; Energy Dissipation; Gas Temperature; Mass To Light Ratios; Schwarzschild Metric; Self Absorption; Astrophysics full text sources ADS |