The α-disk instability in the radiation pressure dominated zone

Details The α-disk instability in the radiation pressure dominated zone The α-disk instability in the radiation pressure dominated zone

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..513..405t&link_type=abstract

NUCLEAR AND CONDENSED MATTER PHYSICS: VI Regional Conference. AIP Conference Proceedings, Volume 513, pp. 405-408 (2000).

Physics

Condensed Matter

Accretion And Accretion Disks, Black Holes, Quasars

Scientific paper

It is well known from analytical work that the accretion disk model stated by Shakura and Sunyaev (Shakura and Sunyaev, 1973) shows, in the radiation pressure dominated zone, called the A zone, an instability, called the `Shakura-Sunyaev instability'. This work shows the results of some simulations of α-disks in the conditions that the analytical theory states as instability conditions. Our simulations are two dimensional (r-z) and time dependent. We use the Smoothed Particle method in cylindric coordinates. The simulations of the A zone follow the time evolution of the disks. It appears that convection is very important to stabilize the flow. .

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