The stellar cusp around the Milky Way's central black hole

11th International LISA Symposium

Schödel, R.^1,3,4,5 ; Gallego-Cano, E.^1,3,4,5 ; Amaro-Seoane, P.^2,3,4,5

Instituto de Astrofísica de Andalucía (CSIC), Glorieta de la Astronomía S/n, Granada

18008, Spain^1

Institut de Ciències de l'Espai (CSIC-IEEC) at Campus UAB, Carrer de Can Magrans s/n, Barcelona

08193, Spain^2

Institute of Applied Mathematics, Academy of Mathematics and Systems Science, CAS, Beijing

100190, China^3

Kavli Institute for Astronomy and Astrophysics, Beijing

100871, China^4

Zentrum für Astronomie und Astrophysik, TU Berlin, Hardenbergstraße 36, Berlin

10623, Germany^5

关键词: Black holes;    Dense clusters;    Galactic Center;    High angular resolutions;    Mass ratio;    Massive black holes;    Milky ways;    Stellar dynamics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/840/1/012020/pdf
DOI  :  10.1088/1742-6596/840/1/012020

来源: IOP

【 摘 要 】

The existence of stellar cusps in dense clusters around massive black holes is a fundamental, decades-old prediction of theoretical stellar dynamics. Yet, observational evidence has been difficult to obtain. With a new, improved analysis of high-angular resolution images of the central parsecs of the Galactic Center, we are finally able to provide the first solid evidence for the existence of a stellar cusp around the Milky Way's massive black hole. The existence of stellar cusps has a significant impact on predicted event rates of phenomena like tidal disruptions of stars and extreme mass ratio inspirals.