6-10 September 2021
Opava
Europe/Prague timezone

Nonlinear evolution of self-trapped g-modes in thin accretion disks

9 Sep 2021, 15:35
25m
Opava

Opava

Hauerova 728

Speaker

Jiri Horak (Astronomical Institute ASCR, Prague)

Description

Due to general relativistic effects, accretion disks surrounding black holes can host self-trapped g-modes close to their inner edges. This talk is devoted to their nonlinear evolution. I will discuss change of the trapping region and oscillation frequency of the g-modes when the amplitude of the oscillations is significant. When nonlinearities in the hydrodynamic equations are taken into account, the g-modes are coupled to other oscillation modes. I will show that and their impact on the original g-mode. Finally I will discuss possible excitation mechanisms.

Primary author

Jiri Horak (Astronomical Institute ASCR, Prague)

Presentation Materials

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