Statistics – Computation
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...347..679p&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 347, Dec. 15, 1989, p. 679-683.
Statistics
Computation
18
Black Holes (Astronomy), Computational Astrophysics, Hydrodynamic Equations, Numerical Integration, Pair Production, Stellar Mass Accretion, Annihilation Reactions, Bremsstrahlung, Compton Effect, Radiation Trapping
Scientific paper
New self-consistent steady solutions of spherical accretion onto black holes with significant pair productions are found in the range m = 3-40 by direct numerical integration of hydrodynamic equations. They are specified by only one parameter, the dimensionless accretion rate. The maximum pair density is a few times that of the ionized electrons. Fully relativistic hydrodynamic equations, radiation moment equations, and pair continuity equations are integrated iteratively. The radiation generated by thermal Comptonization and relativistic bremsstrahlung controls the thermal and dynamical structure of the flow. Ions and leptons are coupled by Coulomb interactions. Pair production by photon-photon, photon-particle, and particle-particle interactions and pair annihilation are considered.
Ostriker Jeremiah P.
Park Myeong-Gu
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