报告人：张帆　教授  （北京师范大学）

时间：2015年11月17日下午4：00

地点：东区理化大楼18层天文台报告厅

报告摘要：In this talk, I will provide a cursory introduction to numerical relativity, covering its main aspects and current status. I will then move on to the discussion of electromagnetic counterparts to gravitational wave signals as seen in some recent numerical simulations. I will summarize the physical approximations deployed in the description of the surrounding regions of black holes and neutron stars, more specifically the magnetospheres, and present some analytical results/thoughts relating to collective EM+plasma motions therein. These results corroborates with numerical observations, and further support the expectation that some EM pre-curser to merger events may be detectable. This would then implies that one can possibly use (all-sky) gravitational wave observations to forewarn (narrower field of view) EM observatories of impending merger events, provided a low latency data analysis pipeline can be established. So my third and final part of the talk will concentrate on introducing a particular data analysis technique that's taylor-made for such a task.