05/05
2023
Seminar
- Title题目 Fire Balls from Primordial Black Hole Explosion
- Speaker报告人 何敏熙 (KEK)
- Date日期 2023年5月5日 10:00
- Venue地点 南楼6420
Abstract摘要
Primordial black holes (PBHs) are hypothetical objects that formed in the early Universe which can lead to various interesting phenomenology. The mass range of PBHs can be much larger than those of astrophysical origins, especially covering masses much smaller than the solar mass. Extremely small PBHs are expected to experience significant Hawking evaporation such that they cannot survive until today. In this talk, we focus on the PBHs with masses smaller than 10^9 g that would have completely evaporated before the Big Bang nucleosynthesis (BBN). We discuss the thermalization process of the high-energy particles from Hawking radiation inside the ambient plasma and show how such process heats up the plasma to form a fire ball around such a PBH with radius much larger than the PBH itself. We will briefly discuss the potential phenomenological consequences from such fire balls.
个人简介:
Minxi He received his PhD at the University of Tokyo in 2021. He works at KEK as a postdoc researcher from 2021 after graduation.
邀请人:
皮石 副研究员
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