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Speaker: James Unwin
Title: The Secret Life of Primordial Black Holes
Abstract: Primordial Black Holes are a potential candidate for explaining some, or even all, of the observationally inferred dark matter abundance. In this talk I will motivate the existence of Primordial Black Holes and discuss their potential role as a dark matter candidate or subcomponent. I will highlight that if Primordial Black Holes coexist with particle dark matter, then one generically expects dense halos to form around the Primordial Black Holes and I will outline how particle dark matter annihilations in these halos can lead to strong constraints, but which notably are highly dependent on the details of the particle dark matter. Moreover, I will highlight that gravitational anomalies observed in small Solar System bodies beyond Neptune (which have been suggested as indicative of a large ninth planet), can be explained by a planetary mass Primordial Black Hole in orbit at the edge of our Solar System.