Marek A. Abramowicz, "Are there primordial black holes in our Galaxy dark matter halo?"

Wednesday 2 Nov 2022, 13:30 → 14:30 Europe/Stockholm

Albano 3: 6228 - Mega (22 seats) (Albano Building 3)

Hybrid talk: Mega (6228, Hus 3, Albano) + https://stockholmuniversity.zoom.us/j/530682073

Abstract: If they are, they must collide with galactic neutron stars, converting them
into light black holes (LMBs), with masses smaller than 2.5 solar mass. We
have calculated the lower limit of the number of the LBHs in the Galaxy that
results from the collisions of hypothetical primordial black holes with neutron
stars. LIGO-Virgo and microlensing are able to detect events involving the LBHs.
If the number of these detections will be much smaller than the lower
limit calculated; this will provide an unambiguous proof that there are no primordial
black holes in the dark matter halo of our Galaxy.

Reference:
"A Robust Test of the Existence of Primordial Black Holes in Galactic Dark Matter
Halos", M.Abramowicz, M.Bejger, A.Udalski, M.Wielgus2022, ApJLett 935, id.L28.