New Mass Windows and Detection Prospects for Primordial Black Hole Dark Matter

Speaker: Nicholas Orlofsky

Recent developments have opened up new possible windows where primordial black holes (PBHs) can make up all of dark matter (DM).  In the first half of the talk, I will describe how microlensing of X-ray pulsars could help to probe the asteroid-mass window.  In the second half, I will discuss how stable (nearly) extremal PBHs with masses below traditional evaporation bounds could populate all of DM.  These extremal PBHs could give rise to energetic signals when present-day binaries merge.