Reanalysis of the MACHO constraints on PBH in the light of Gaia DR3 data

Understand

The recent astrometric data of hundreds of millions of stars from Gaia DR3 has allowed a precise determination of the Milky Way rotation curve up to $28$~kpc.

• The data suggests a rapid decline in the density of dark matter beyond $19$~kpc.
• We fit the whole rotation curve with four components (gas, disk, bulge and halo) and compute the microlensing optical depth to the Large Magellanic Cloud.
• With this model of the galaxy we reanalyse the microlensing events of the MACHO and EROS-2 Collaborations.