時間：12月27日（周五）上午10：00 

地點：多學科416
報告人：易疏序 (Radboud University)
主持人：廖進元 副研究員
     
題目：恒星級雙黑洞并合引力波的電磁對應體

摘要：Multimessenger astronomy, combining gravitational-wave (GW) and electromagnetic-wave (EM) observations, has a huge impact on physics, astrophysics, and cosmology. However, the majority of sources detected with currently running ground-based GW observatories are binary black hole (BBH) mergers, which disappointingly were expected to have no EM counterparts. In this Letter, we propose that if a BBH merger happens in a gaseous disk around a supermassive black hole, the merger can be accompanied by a transient radio flare like a fast radio burst (FRB). We argue that the total mass and the effective spin derived from GW detection can be used to distinguish such a source from other channels of BBH mergers. If this prediction is confirmed with future observations, multimessenger astronomy can be greatly improved. The mystery of the origin of FRBs could also be revealed partially.

個人簡歷：2016年于中國科學院大學獲得博士學位，博士論文題目《脈沖星計時應用研究》；2016-2018年于香港大學從事博士后研究，研究方向致密雙星輻射機制；2018-今于荷蘭Radboud大學從事博士后研究，研究方向引力波天文學。