发稿时间:2019-10-21浏览次数:10

USTC Astronomy Colloquium Series: 2019 Fall
Electromagnetic Counterparts for Binary Neutron Star Mergers
高鹤  教授
北京师范大学
2019/10/22, 4:00pm , the 19th-floor Observatory Hall
In August 17, 2017, the LIGO-Virgo scientific collaboration, for the first time, detected a gravitational wave (GW) signal from a binary neutron star (NS) merger event. Multi-wavelength electro-magnetic (EM) counterparts to GW170817 have also been detected. This has opened up a new era of GW astronomy, whereby comprehensive analyses of multi-messenger signals will shed light on both GW and EM studies. For NS-NS mergers, many associated EM counterparts have already been proposed in the literature, and their relative brightness is essentially determined by the properties of the merger remnant. In this talk, I will briefly review the possible EM signatures for different merger remnants. Moreover, I will talk about how to use the multi-messenger observations for NS-NS mergers to make constraints on the maximum mass of NS.
 Prof. He Gao got his Ph.D. in Department of Physics and Astronomy, University of Nevada Las Vegas (UNLV) and did postdoctoral research in Pennsylvania State University. After that he came back to China and now became a full professor in Department of Astronomy, Beijing Normal University. His research interest is on high energy astrophysics, including theory of Gamma-Ray Bursts and Afterglows, Fast Radio Bursts, Electromagnetic Counterpart of GW events.