Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/103930
Type: Artigo de evento
Title: Brownian Motion Of Black Holes In Stellar Systems With Non-maxwellian Distribution Of The Field Stars
Author: Pedron I.T.
Coimbra-Araujo C.H.
Abstract: 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. © 2007 International Astronomical Union.
Editor: 
Rights: fechado
Identifier DOI: 10.1017/S1743921307005789
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-37049008500&partnerID=40&md5=0e23b33fba3b589e0a1e371c21783c5b
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
2-s2.0-37049008500.pdf111.79 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.