New Instabilities in Accretion Flows onto Black Holes

Details New Instabilities in Accretion Flows onto Black Holes New Instabilities in Accretion Flows onto Black Holes

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jkas...34..247m&link_type=abstract

Journal of the Korean Astronomical Society, vol. 34, no. 4, pp. 247-249

Physics

Accretion: Accretion Disks, Black Hole Physics, Hydrodynamics, Instabilities, Shock Waves

Scientific paper

The accretion disks are usually supposed symmetric to reflection on the Z=0 plane. Asymmetries in the flow are be very small in the vicinity of the compact accretor. However their existence can have a important role in the case of subkeplerian accretion flows onto black holes.These flows lead to strong heating and even to the formation of shocks close to the centrifugal barrier. Large asymmetries are due to the development of the KH instability triggered by the small turbulences at the layer separating the incoming flow from the outcoming shocked flow. The consequence of this phenomenon is the production of asymmetric outflows of matter and quasi periodic oscillations of the inner disk regions up and down the Z=0 plane.

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