Standing shocks in the rotating winds and accretion in Kerr spacetime

Journal Article · Thu Feb 01 04:00:00 EST 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168379· OSTI ID:6966558

Chakrabarti, S K ^[1]

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1. Tata Institute of Fundamental Research, Bombay (India)

This paper presents the analytic theory of the Rankine-Hugoniot shocks in the rotating winds and accretion in Kerr geometry. The effects of coupling of the orbital angular momentum of the flow and the Kerr parameters are shown. In general, for a given energy, a retrograde flow which includes a shock requires higher angular momentum than a prograde flow, and the locations of the critical points as well as the shocks are farther away from the black hole. For a given initial flow parameters such as the specific angular momentum and the energy, it is observed that as many as four formal shock locations are present, out of which two can be ruled out by employing the boundary conditions. It is conjectured that, in a sufficiently dissipative flow, such ambiguity in shock locations would disappear. 10 refs.

• OSTI ID: 6966558
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 350; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANALYTICAL SOLUTION
ANGULAR MOMENTUM
ASTROPHYSICS
BLACK HOLES
EQUATIONS
KERR METRIC
METRICS
MOTION
RANKINE-HUGONIOT EQUATIONS
ROTATION
SHOCK WAVES
SPACE-TIME
STAR ACCRETION
STAR EVOLUTION
STELLAR ACTIVITY
STELLAR WINDS