Gr@v Seminar - Long lived scalar field dark matter clouds around supermassive black holes - 24 setembro 2012

Long lived scalar field dark matter clouds around supermassive black holes

Juan Carlos Degollado Daza

Aveiro

Resumo

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

Local

GAP Room
Physics Department Aveiro University
Campus de Santiago
3810-183 Aveiro, Portugal