A note on the radial-azimuthal instability of an isothermal accretion disk around a black hole

Details A note on the radial-azimuthal instability of an isothermal accretion disk around a black hole A note on the radial-azimuthal instability of an isothermal accretion disk around a black hole

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...262..350c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 262, no. 1, p. 350-352.

Astronomy and Astrophysics

Astronomy

3

Accretion Disks, Black Holes (Astronomy), Magnetohydrodynamic Stability, Radial Distribution, Azimuth, Isothermal Processes

Scientific paper

Results of an investigation of the radial-azimuthal instability properties of an isothermal alpha-viscosity accretion disk around a black hole are reported. It is shown that, even in the case of alpha = 0, an acoustic instability is present in both inner and outer regions of the disk for radial-azimuthal linear perturbations, which do not appear for purely radial perturbations.

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