Gr@v Seminar - Long lived scalar field dark matter clouds around supermassive black holes - 24 setembro 2012
Juan Carlos Degollado Daza
Classical scalar fields have been proposed as possible candidates for the dark matter component of the universe. Given the fact that super-massive black holes seem to exist at the center of most galaxies, in order to be a viable candidate for the dark matter halo a scalar field configuration should be stable in the presence of a central black hole, or at least be able to survive for cosmological time-scales.
In the present work we consider a scalar field as a test field on a Schwarzschild background, and study under which conditions one can obtain long-lived configurations.
We show that there exist configurations that can remain surrounding a black hole for large time-scales. In particular, ultra-light scalar field dark matter around supermassive black holes can survive for cosmological times
24 de setembro de 2012 | 14:30
Physics Department Aveiro University
Campus de Santiago
3810-183 Aveiro, Portugal