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Brownian motion of supermassive black holes in galaxy cores

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arxiv 1908.04283 v1 pith:BV4ALNDK submitted 2019-08-12 astro-ph.GA

Pierfrancesco Di Cintio , Luca Ciotti , Carlo Nipoti This is my paper
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keywords blackholescoresdynamicsgalacticgalaxymethodsmodel
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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. \keywords{stellar dynamics, black hole physics, methods: n-body simulations, methods: statistical.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Self-acceleration of Hardening Binaries

    astro-ph.GA 2026-05 unverdicted novelty 7.0 of 10

    Hardening binaries experience deterministic self-acceleration of their center of mass, induced precession, and plane rotation in uniform isotropic media, driving outward spiraling and eccentricity growth in all cases ...

  2. On an empirical method to build near-equilibrium axisymmetric and triaxial galaxy models

    astro-ph.GA 2026-07 conditional novelty 5.0 of 10

    An improved adiabatic-squeezing method with an Ornstein-Uhlenbeck noise term lets modelers prescribe the final axial ratios of near-equilibrium triaxial N-body galaxy models.

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