Constraining primordial black holes and primordial curvature power spectrum with extragalactic muon neutrino
The episode discusses a paper that uses the flux of extragalactic muon neutrinos to constrain dark matter models. By observing WIMP annihilation inside Ultra-compact minihalos formed around Primordial Black Holes, researchers establish strong upper limits on the fraction of dark matter in PBHs (f PBH). This methodology also yields upper bounds on the primordial curvature power spectrum (P R).