We investigate the dynamics of supermassive black holes (SMBHs) in galactic cores by means of a semi-Analytic model based on the Langevin equation, including dynamical friction and stochastic noise accounting for the gravitational interactions with stars. The model is validated against direct N-body simulations of intermediate-mass black holes in stellar clusters where a realistic number of particles is accessible. For the galactic case, we find that the SMBH experiences a Brownian-like motion with a typical displacement from the geometric center of the Galaxy of a few parsecs, for system parameters compatible with M87.

Brownian motion of supermassive black holes in galaxy cores

Ciotti L.;Nipoti C.
2020

Abstract

We investigate the dynamics of supermassive black holes (SMBHs) in galactic cores by means of a semi-Analytic model based on the Langevin equation, including dynamical friction and stochastic noise accounting for the gravitational interactions with stars. The model is validated against direct N-body simulations of intermediate-mass black holes in stellar clusters where a realistic number of particles is accessible. For the galactic case, we find that the SMBH experiences a Brownian-like motion with a typical displacement from the geometric center of the Galaxy of a few parsecs, for system parameters compatible with M87.
Proceedings of the International Astronomical Union
93
96
Di Cintio P.; Ciotti L.; Nipoti C.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/785417
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