6-10 September 2021
Opava
Europe/Prague timezone

Non-isotropic structure of the Galactic center S cluster: Implications for its origin

7 Sep 2021, 10:00
25m
Opava

Opava

Hauerova 728

Speaker

Michal Zajaček (Center for Theoretical Physics, Warsaw, Poland)

Description

The innermost part of the Nuclear Star Cluster is known as the S cluster that consists mostly of young B-type stars. The origin of these young stars at the scale of 1000 gravitational radii from Sgr A has remained a puzzle. The brightest of those stars have been crucial for determining the mass of Sgr A as well as for testing gravitational theories in the strong-field limit. Recently, Ali et al. (2020) presented the two-disk structure of the S cluster, which is in contrast with its usually assumed isotropic distribution. In the follow-up study, the authors present a four-disk structure in the innermost parts of the Galactic center. Here we review the fundamental dynamics of the S cluster and in particular we analyze the implications of its multi-disk nature for its origin and evolution.

Primary author

Michal Zajaček (Center for Theoretical Physics, Warsaw, Poland)

Presentation Materials