25–28 Sept 2018
DESY Hamburg
Europe/Berlin timezone

On Dark Matter Accretion in Neutron Stars

26 Sept 2018, 14:40
20m
Seminar room 4a (SR 4a) (DESY Hamburg)

Seminar room 4a (SR 4a)

DESY Hamburg

Cosmology & Astroparticle Physics Parallel Session: Cosmo 1

Speaker

Dr Raghuveer Garani (Universite Libre De Bruxelles)

Description

If Dark Matter (DM) interacts with nucleons and/or electrons it can be trapped in celestial bodies. For a Neutron Star (NS), DM accumulating in the center could form a core which could further gravitationally collapse into a black hole. The requirement that such collapses do not occur gives constraints on the DM mass and interactions. Such phenomena crucially depends on the amount of DM that can accumulate in NS. In this talk, we re-evaluate in detail the maximum amount of DM that could be accumulated in NS by carefully considering the fact that neutrons form a highly degenerate fermi plasma. We find that for asymmetric bosonic DM, for masses below 1 GeV constraints are significantly smaller than previously obtained in the literature.

Primary author

Dr Raghuveer Garani (Universite Libre De Bruxelles)

Co-authors

Dr Thomas Hambye (Universite Libre De Bruxelles) Dr Yoann Genolini (Universite Libre De Bruxelles)

Presentation materials