Abstract
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 ∼ ρ2, 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.
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Original Russian Text © S.V. Chernov, 2015, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2015, Vol. 147, No. 6, pp. 1113–1119.
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Chernov, S.V. Theory of magnetohydrodynamic accretion of matter with an ultrahard equation of state onto a black hole. J. Exp. Theor. Phys. 120, 960–965 (2015). https://doi.org/10.1134/S1063776115050027
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DOI: https://doi.org/10.1134/S1063776115050027