Stellar-dynamical evolution of the Galactic centre

Galactic centre is one of the most extreme environments in our Galaxy. In the vicinity of the central supermassive black hole with the mass of about 4 million Solar masses, stellar densities reach the order of magnitude 10⁷ stars per cubic parsec. Observations have further identified various stellar structures in this region that show not yet understood differences and undergo a complex mutual interactions.

The aim of this project is to investigate the stellar dynamics in the innermost parsec of our Galaxy, including the presumably numerous population of dark stellar remnants. The primary approach will be theoretical, mostly exploiting the direct N-body modelling and/or simplified analytical models. Confrontation of the results with the already existing observational data will be an integral part of these efforts.

The PhD student will naturally collaborate with the other members of the well established Galactic centre group at the Astronomical Institute of Charles University: Jaroslav Haas, Pavel Kroupa, Myank Singhal.

References:

[1] Singhal, Subr & Haas (2024) https://ui.adsabs.harvard.edu/abs/2024MNRAS.531.2028S/abstract
[2] Kroupa, Subr, Jerabkova & Wang (2020) https://ui.adsabs.harvard.edu/abs/2020MNRAS.498.5652K/abstract
[3] Subr & Haas (2016) https://ui.adsabs.harvard.edu/abs/2016ApJ...828....1S/abstract
[4] Subr & Haas (2014) https://ui.adsabs.harvard.edu/abs/2014ApJ...786..121S/abstract
[5] Haas, Subr & Vokrouhlicky (2011) https://ui.adsabs.harvard.edu/abs/2011MNRAS.416.1023H/abstract
[6] Haas, Subr & Kroupa (2011) https://ui.adsabs.harvard.edu/abs/2011MNRAS.412.1905H/abstract