报告人：任婧 副研究员（中国科学院高能物理研究所）

题 目:Not Quite Black Holes and Gravitational Wave Echoes

时 间：2023年4月7日（周五）16:00

地 点：理工楼1226

邀请人：王科

报告摘要:

Current observations of astrophysical black holes only confirm the GR predictions at the order of the horizon size, with no direct implications regarding physics immediately outside the horizon. On the other hand, near-horizon corrections might be fundamental to understanding the mysterious features of black holes. In this talk, I will discuss the possibility of not quite black holes (horizonless ultracompact objects) being the endpoint of gravitational collapse. I will introduce a theoretical candidate with interesting implication for black hole physics. I will also discuss the smoking gun signal for such objects in general, namely, gravitational wave echoes, which provides an efficient way to probe quantum gravity effects outside of the macroscopic objects. I will talk about the recent progress made in echo searches.

报告人简介：

任婧，中国科学院高能物理研究所理论室副研究员。2014年于清华大学获得博士学位，2014年至2018年在加拿大多伦多大学物理系从事博士后研究，2018年入职高能所。主要从事粒子物理、引力及其交叉方向研究，探索超出粒子物理标准模型和广义相对论的新物理。近年来的研究兴趣集中在黑洞物理和量子引力修正、引力波回声探测、暗物质理论及唯象学研究等方面。