04/06
2023
Seminar
- Title题目 Testing primordial black hole and measuring the Hubble constant with multiband gravitational-wave observations
- Speaker报告人 柳浪 (北京师范大学)
- Date日期 2023年04月06日 10:00
- Venue地点 线下: 南楼6620 线上: https://meeting.tencent.com/dm/PwBH1fQp8Xit 腾讯会议：678-827-935
Abstract摘要
There exist two kinds of stochastic gravitational-wave backgrounds associated with the primordial curvature perturbations. One is called induced gravitational wave due to the nonlinear coupling of curvature perturbations to tensor perturbations, while the other is produced by coalescences of binary primordial black holes formed when the large amplitude curvature perturbations reenter the horizon in the radiation dominant era. In this talk, I will show a quite useful relation for the peak frequencies of these two stochastic gravitational-wave backgrounds. This relation can not only offer a smoking-gun criterion for the existence of primordial black holes, but also provide a method for measuring the Hubble constant H0 by multiband observations of the stochastic gravitational-wave backgrounds.
报告人简介
柳浪。2016年本科毕业于兰州大学，2021年在中国科学院理论物理研究所获得博士学位，目前在北京师范大学从事博士后研究工作，研究方向为原初黑洞和引力波。
邀请人
王少江
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