Accretion of stars on to a massive black hole: A realistic diffusion model and numerical studies

Details Accretion of stars on to a massive black hole: A realistic diffusion model and numerical studies Accretion of stars on to a massive black hole: A realistic diffusion model and numerical studies

2004-01-09

arxiv.org/abs/astro-ph/0401163v2

Mon.Not.Roy.Astron.Soc. 352 (2004) 655

Astronomy and Astrophysics

Astrophysics

Accepted for publication. Minor changes. Two appendices added

Scientific paper

10.1111/j.1365-2966.2004.07956.x

To be presented is a study of the secular evolution of a spherical stellar system with a central star-accreting black hole (BH) using the anisotropic gaseous model. This method solves numerically moment equations of the full Fokker-Planck equation, with Boltzmann-Vlasov terms on the left- and collisional terms on the right-hand sides. We study the growth of the central BH due to star accretion at its tidal radius and the feedback of this process on to the core collapse as well as the post-collapse evolution of the surrounding stellar cluster in a self-consistent manner. Diffusion in velocity space into the loss-cone is approximated by a simple model. The results show that the self-regulated growth of the BH reaches a certain fraction of the total mass cluster and agree with other methods. Our approach is much faster than competing ones (Monte Carlo, $N$--body) and provides detailed informations about the time and space dependent evolution of all relevant properties of the system. In this work we present the method and study simple models (equal stellar masses, no stellar evolution or collisions). Nonetheless, a generalisation to include such effects is conceptually simple and under way.

Affiliated with

Also associated with

No associations

Rating

Accretion of stars on to a massive black hole: A realistic diffusion model and numerical studies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Accretion of stars on to a massive black hole: A realistic diffusion model and numerical studies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accretion of stars on to a massive black hole: A realistic diffusion model and numerical studies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-66283