报告题目:类轴子型暗物质云和引力波效应

报告人：张云龙

报告时间：2021年05月18日（周二）上午 10:00

报告地点：浙江工业大学理学楼二楼师生活动中心

摘要 (Abstract): The axion objects such as axion mini-clusters and axion clouds around spinning black holes induce parametric resonances of electromagnetic waves through the axion-photon interaction. It has been known that the resonances from the axion with the mass around mueV may explain the observed fast radio bursts (FRBs). Here we argue that similar bursts of gravitational waves, which we call the fast gravitational wave bursts (FGBs), are generated from axion clumps with the presence of gravitational Chern-Simons (CS) coupling, and the typical frequency is half of the axion mass. We discuss the secondary gravitational wave production associated with FRB, as well as the possible host objects of the axion clouds, such as primordial black holes. Future detections of FGBs together with the observed FRBs are expected to provide more evidence for the axion.

报告人简介(Bio) : 张云龙，中科院国家天文台副研究员，研究方向为引力理 论，黑洞物理和宇宙学等。2009 年兰州大学获理学学士，2014 年中科院理论 物理所获理学博士。 先后在英国南安普顿大学，台湾大学物理系，韩国亚太 理论物理中心等进行学术访问及博士后合作研究。2018 起任日本京都大学基 础物理学研究所特任助理教授，2020 年入职中科院国家天文台引力波天体物 理研究团组。

邀 请 人 :朱涛 教授