学术报告（2023年2月7日15：00）：Pinning down the primordial black hole formation mechanism with gamma-rays and gravitational waves

主持人： 韩成成  副教授

腾讯会议：299-157-974

报告简介：Primordial black holes (PBHs) are predicted in many models via different formation mechanisms. Identifying the origin of PBHs is of the same importance as probing their existence. We propose to probe the asteroid-mass PBHs with gamma-rays from Hawking radiation and the stochastic gravitational waves (GWs) from the early Universe. We consider four concrete formation mechanisms, including collapse from primordial curvature perturbations, first-order phase transitions, or cosmic strings, and derive the extended PBH mass functions of each mechanism for phenomenological study. The results demonstrate that by combining gamma-rays and GW signals we can probe PBHs up to O(1019 ) g and identify their physical origins.

报告人简介：谢柯盼，北京航空航天大学物理学院副教授。2013年本科毕业于浙江大学，2018年博士毕业于北京大学，并先后于韩国首尔大学、美国内布拉斯加大学林肯分校进行博士后研究工作，于2022年加入北京航空航天大学。研究领域为粒子物理理论，在JHEP、PRD等期刊发表论文30余篇。目前的研究兴趣为粒子宇宙学和对撞机物理。