Conveners
Session 2
- Chair: Dr Michael Hawkins
I will review some past work on slow roll inflation with a black hole, showing how the growth of the horizon can be computed. I will then discuss how the picture can change with ultra slow rolling scalars.
Gravitational microlensing is known as a productive method for exoplanet discovery and characterisation, and crucially, it also provides an experimental avenue to constrain the galactic PBH abundance in the mass regime from ~ 10−12 M⊙ (i.e. asteroid-mass scale) to ∼ 1000 M⊙. The key to probing the very lowest masses is fast cadence observations on the order of hours to minutes. We previously...
If primordial black holes (PBHs) constitute the dark matter (DM), stars forming in dark-matter dominated environments with low velocity dispersions, such as ultra-faint dwarf galaxies, may capture a black hole at birth. The capture probability is non-negligible for PBHs of masses around $10^{20}$g, and increases with stellar mass. Moreover, infected stars are turned into virtually invisible...
In this talk, I will discuss possible probes of Heavy Neutral Leptons (HNLs) with Primordial Black Holes (PBHs).
If produced in the early Universe with an initial mass of ∼ $10^{15}$ g, PBHs are expected to evaporate at the present time producing sizable
fluxes of particles in their last instants. These “exploding” black holes will emit bursts of
Standard Model particles as well as new...
