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May 3 – 5, 2023
Center for Astrophysics and Gravitation, Instituto Superior Técnico, University of Lisbon
Europe/Lisbon timezone

Smoking gun signals of dark matter in compact stars

May 4, 2023, 11:40 AM
10m
Centro de Congressos (Center for Astrophysics and Gravitation, Instituto Superior Técnico, University of Lisbon)

Centro de Congressos

Center for Astrophysics and Gravitation, Instituto Superior Técnico, University of Lisbon

Av. Rovisco Pais 1 1049-001 Lisboa, PORTUGAL

Speaker

Edoardo Giangrandi (CFisUC - University of Coimbra)

Description

We present here the smoking-gun signals of the presence of dark matter (DM) in compact stars, such as neutron stars (NSs). We demonstrate the conditions under which the DM particles tend to form a compact core or a diluted halo embedding the NS. At the same time, we point out the possible degeneracy between the effect of accumulated DM and the deconfinement phase transition in the core of the star. Both configurations lead to the effective softening of the equation of state and could mimic each other. Moreover, we show the impact of DM on the star thermal evolution and properties, e.g. mass, radius, tidal deformabilities, and its possible detection with the present and future multi-messenger observations.

Primary authors

Constança Providência Edoardo Giangrandi (CFisUC - University of Coimbra) Oleksii Ivanytskyi (University of Wroclaw) Tim Dietrich (Nikhef) Dr Violetta Sagun (University of Coimbra)

Presentation materials