Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-03-14
Astronomy and Astrophysics
Astrophysics
Presented at XXVI Int. Astronomical Union General Assembly, Symp. 238, Prague, Czech Republic, Aug 21-25 2006
Scientific paper
10.1017/S1743921307005789
A massive black hole at the center of a dense stellar system, such as a globular cluster or a galactic nucleus, is subject to a random walk due gravitational encounters with nearby stars. It behaves as a Brownian particle, since it is much more massive than the surrounding stars and moves much more slowly than they do. If the distribution function for the stellar velocities is Maxwellian, there is a exact equipartition of kinetic energy between the black hole and the stars in the stationary state. However, if the distribution function deviates from a Maxwellian form, the strict equipartition cannot be achieved. The deviation from equipartition is quantified in this work by applying the Tsallis q-distribution for the stellar velocities in a q-isothermal stellar system and in a generalized King model.
Coimbra-Araujo Carlos H.
Pedron I. T.
No associations
LandOfFree
Brownian motion of black holes in stellar systems with non-Maxwellian distribution for the stars field 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 Brownian motion of black holes in stellar systems with non-Maxwellian distribution for the stars field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Brownian motion of black holes in stellar systems with non-Maxwellian distribution for the stars field will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-715529