FNWI --- IMAPP Department of Astrophysics
Radboud University > Faculty of Science > Department of Astrophysics


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news:dynamical_relaxation_and_the_activity_and_evolution_of_massive_black_holes [2016/02/22 10:07] (current)
gebhardt created
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 +**March 8, 2016**
 +**Tal Alexander, Weizmann Institute, Rehovot, Israel.**
 +Dynamical relaxation and the activity and evolution of massive black holes
 +Abstract: I discuss the role stellar dynamical relaxation mechanisms,
 +and in particular rapid but fragile resonant relaxation, plays in
 +various modes of activity displayed by massive black holes (MBHs), and
 +in their formation and evolution. I describe recent breakthroughs in
 +the understanding of relaxation in the relativistic regime, and apply
 +them to predict the rates of direct plunges and gravitational wave
 +emission from inspiralling compact objects, and to model stars around
 +the MBH of the Milky Way. I show how stellar relaxation can play an
 +important role in the behavior of circum-nuclear accretion disks, and
 +apply it to explain the radio observations of the maser disk in
 +NGC4258. Finally, I discuss how rapid relaxation may play a critical
 +role in allowing seed MBHs to grow supra-exponentially fast in the
 +very early universe.