The progress in the theory of accretion onto a black hole (I): ADAF accretion theory.

Details The progress in the theory of accretion onto a black hole (I): ADAF accretion theory. The progress in the theory of accretion onto a black hole (I): ADAF accretion theory.

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pabei..17..148f&link_type=abstract

Prog. Astron., Vol. 17, No. 2, p. 148 - 158

Astronomy and Astrophysics

Astrophysics

Black Holes: Accretion

Scientific paper

The theory of accretion onto a black hole is one of the most important ones in astrophysics. Great progress has been made in recent years in the following two aspects. The first is shock-included accretion theory which argues that since the accretion flows around a black hole must be transonic, shocks will occur in some cases. The second is ADAF (advection dominated accretion flow) theory. It is based upon the recognization to an important cooling mechanism, advection cooling. Most of the dissipated energy are stored in flows and advected into the black hole other than radiated away as in the standard disk model. ADAF had much higher temperature, much larger radial velocity, smaller angular momentum and much lower radiative efficiency than the standard thin disk.

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