Name: The dynamics of parsec-scale eccentric stellar disks around SMBHs in galactic nuclei: disk disruption mechanisms, tidal disruption events and milliparsec stars
Start: 2024-05-21 12:00:00
End: 2024-05-21 13:00:00
Location: MR14 DAMTP and online

The dynamics of parsec-scale eccentric stellar disks around SMBHs in galactic nuclei: disk disruption mechanisms, tidal disruption events and milliparsec stars

Antti Rantala (Max Planck Institute for Astrophysics) Cambridge Fluids Network - fluids-related seminars 21 May 2024 12:00pm MR14 DAMTP and online We study the dynamics of eccentric parsec-scale stellar disks around supermassive black holes (SMBHs) in galactic nuclei using our novel post-Newtonian N-body code BIFROST. The simulated eccentric disks (Mdisk<Msmbh) are unstable and rapidly disrupt in <1.5 Myr. The disk disruption naturally results in a formation of a milliparsec stellar population around SMBHs due to disk migration and binary disruptions via the Hills mechanism. The eccentric disk disruption can considerably boost the tidal disruption event rate of galaxies for a short period of ~1Myr. Finally, we discuss the implications of our results for understanding the structure of the Milky Way centre.