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Title: Theory of magnetohydrodynamic accretion of matter with an ultrahard equation of state onto a black hole

We consider the magnetohydrodynamic theory of spherically symmetric accretion of a perfect fluid onto a Schwarzschild black hole with an ultrahard equation of state, p = μ ∼ ρ{sup 2}, where p is the pressure, μ is the total energy density, and ρ is the fluid density. An approximate analytical solution is written out. We show that one critical sonic surface that coincides with the black hole event horizon is formed instead of two critical surfaces (fast and slow magnetosonic surfaces) for a degenerate ultrahard equation of state of matter.
Authors:
 [1]
  1. Russian Academy of Sciences, Astrospace Center, Lebedev Physical Institute (Russian Federation)
Publication Date:
OSTI Identifier:
22472229
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 120; Journal Issue: 6; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANALYTICAL SOLUTION; ASTROPHYSICS; BLACK HOLES; ENERGY DENSITY; EQUATIONS OF STATE; FLUIDS; IDEAL FLOW; MAGNETOHYDRODYNAMICS; SCHWARZSCHILD METRIC; SPHERICAL CONFIGURATION; STAR ACCRETION; SYMMETRY