YITP WORKSHOP ON
Quasi-Periodic Oscillations and Time Variabilities of Accretion Flows
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ABSTRACT

NAME
INSTITUTE
TITLE OF THE TALK
K. Ohsuga
RIKEN, Japan
Simulations of supercritical (slim) disks
We perform two-dimensional radiation hydrodynamic simulations of the supercritical/near-critical accretion flows onto black holes. We find the supercritical accretion is possible. Thick disk forms and radiatively driven outflows appear above and below the disk. On the other hand, near-critical disks exhibit the limit-cycle oscillations, induced by the thermal and secular instabilities in the radiation-pressure dominant region. The resulting light curve is consistent with the observations of GRS1915+105. Also, our simulations succeed in reproducing the intermittent jets.


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