Growth of black holes at the centers of galaxies: Absorption of stars and activity of galactic nuclei

  title={Growth of black holes at the centers of galaxies: Absorption of stars and activity of galactic nuclei},
  author={V. A. Sirota and A. S. Il’in and Kirill P. Zybin and Aleksandr V. Gurevich},
  journal={Journal of Experimental and Theoretical Physics},
We study the influence of supermassive black holes on the distribution of stars at the centers of galaxies. We analyze relaxation processes associated with encounters between stars and their absorption by black holes. For an isothermal distribution of stars, we obtain the growth law and estimate the current masses of black holes. The tidal disruption of stars near black holes is considered as a possible cause of the activity of galactic nuclei. 
Origin of supermassive black holes
The origin of supermassive black holes in the galactic nuclei is quite uncertain in spite of extensive set of observational data. We review the known scenarios of galactic and cosmological formationExpand
Nuclear interaction gamma-ray lines from the Galactic center region
Aims. The accretion of stars onto the central supermassive black hole at the center of the Milky Way is predicted to generate large fluxes of subrelativistic ions in the Galactic center region. WeExpand
Physical laboratory at the center of the Galaxy
We review the physical processes that occur at the center of the Galaxy and that are related to the supermassive black hole Sgr A* residing there. The discovery of high-velocity S0 stars orbiting SgrExpand
The Loss-cone Problem in Axisymmetric Nuclei
We consider the problem of consumption of stars by a supermassive black hole (SBH) at the center of an axisymmetric galaxy. Inside the SBH sphere of influence, motion of stars in the mean field isExpand


Search for black holes
Methods and results of searching for stellar mass black holes in binary systems and for supermassive black holes in galactic nuclei of different types are described. As of now (June 2002), a total ofExpand
Star distribution around a massive black hole in a globular cluster
To predict the likely distribution of stars around a massive black hole in the core of a cluster of stars, an equation of the Fokker-Planck type is derived that describes the diffusion of stars inExpand
Observational evidence for a connection between supermassive black holes and dark matter haloes
We present new velocity dispersion measurements of a sample of 12 spiral galaxies for which extended rotation curves are available. These data are used to refine a recently discovered correlationExpand
A Fundamental Relation Between Supermassive Black Holes and Their Host Galaxies
The masses of supermassive black holes correlate almost perfectly with the velocity dispersions of their host bulges, Mbh ∝ σα, where α = 4.8 ± 0.5. The relation is much tighter than the relationExpand
The distribution and consumption rate of stars around a massive, collapsed object
We consider the steady-state distribution and consumption rate of stars orbiting a massive object at the center of a spherical, N-body stellar system. The distribution of stars is determined by theExpand
Large-scale structure of the Universe. Analytic theory.
An analytical theory is developed of the nonlinear stage of the Jeans instability in a cold nondissipative gas in an expanding Universe. It is shown that the growth of this instability creates aExpand
The classical theory of fields
The principle of relativity Relativistic mechanics Electromagnetic fields Electromagnetic waves The propagation of light The field of moving charges Radiation of electromagnetic waves Particle in aExpand