Gravitational waves from extreme mass ratio inspirals

主讲人 (Speaker): 龙江

主讲人单位 (Speaker's Institute): Universite Libre de Bruxelles

邀请人 (Invited by): 张建东

时间 (Time): 星期二, 2018/01/23 - 10:30 to 11:30

地点 (Location): 珠海校区天琴引力物理研究中心8楼大会议室

摘要 (Abstract):

We analytically compute time domain gravitational waveforms produced in the final stages of extreme mass ratio inspirals of non-spinning compact objects into supermassive nearly extremal Kerr black holes. The resulting gravitational waveforms consist of an intermediate polynomial ringdown phase followed by an exponential quasi-normal mode decay. The waveform amplitude exhibits critical behavior when the orbital angular momentum tends to a minimal value determined by the innermost stable circular orbit. We show that either near-critical or large angular momentum leads to a significant extension of gravitational wave oberservation.

主讲人简介 (Speaker's CV):

龙江，比利时布鲁塞尔自由大学（ULB）博士后。2006-2010就读于北京大学物理学院，2011-2015在北京大学物理学院攻读理论物理博士学位。研究兴趣为全息、引力与信息、渐进平直时空与引力波、高自旋引力等。