Black holes in low mass galaxies (Anil Seth; University of Utah, USA)

From May 05, 2016 13:15 until May 05, 2016 13:45

At Instituto de Astrofísica, Pontificia Universidad Católica, Vicuña Mackenna 4860, Santiago, Chile

Categories: Seminarios

Supermassive black holes are ubiquitous in massive galaxies, but it remains unclear how many sub-Milky Way mass galaxies host black holes. The demographic of black holes in lower mass galaxies provide the only currently observable test of how supermassive black hole form in the early universe. I will discuss my work to find and measure the mass of black holes in lower mass galaxies, highlighting the detection of a supermassive black hole that makes up 15% of the mass of an ultracompact dwarf galaxy (UCD). This UCD is the least massive and smallest object known to host a supermassive (>106 Msol) black hole. I will present additional evidence that black holes like this may represent a significant fraction of all the supermassive black holes in the local universe.