Primordial black holes capture into neutron stars

par Dr Yoann Génolini (Niels Bohr Institute, University of Copenhagen, Denmark)

jeudi 17 sept. 2020, 11:00 → 12:00 Europe/Paris

Amphithéâtre (LPSC)

Primordial black holes (PBH), produced through a variety of processes in the early universe, could fill galactic halos accounting for a fraction or the totality of the dark matter. In particular, PBH with sub-stellar masses could be captured by stars, start to swallow their material, and eventually turn them into BH, hence originating a peculiar new type of stellar catastrophic event. I will describe this process in the most favorable case of PBH capture by neutron stars. I will then detail a number of novel features in the capture phase, during the settling within the star and mass growth of the PBH, and illustrate some phenomenological consequences.