Nonlinear expansion triggered by magnetic stress in accretion flow onto a black hole

Details Nonlinear expansion triggered by magnetic stress in accretion flow onto a black hole Nonlinear expansion triggered by magnetic stress in accretion flow onto a black hole

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.210..109y&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 210, no. 1-2, p. 109-111 (IAU Colloquium 134)

Astronomy and Astrophysics

Astrophysics

Accretion Disks, Black Holes (Astronomy), Field Strength, Magnetic Fields, Magnetohydrodynamic Flow, Astrophysics, Nonlinearity, Plasma Waves, Stellar Rotation

Scientific paper

The paper is an investigation of the magnetohydrodynamics (MHD) of the quasi-radial accretion onto a rotating black hole. It is demonstrated that the nonlinear effects in the accretion flow accelerate the rate of expansion of the Alfven mode. The accretion flow becomes unstable at the weak strength of magnetic field which is about one-thirtieth of the expected value by the linear theory.

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