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Christian Byrnes - Primordial Black Holes

Abstract: While black holes are typically known as the remnants of stellar collapse, some may have formed in the early universe—these are known as primordial black holes (PBHs). Unlike most dark matter candidates, primordial black holes do not require the introduction of new fundamental physics, making them a compelling possibility. In this talk, I will outline the current observational constraints on PBHs as dark matter, explore their potential connections to gravitational wave signals, and discuss how Hawking evaporation of light primordial black holes could produce high-energy particles.