Lecturer: Dr. Kenta Hotokezaka Affiliation: Racah Institute of Physics Hebrew University of Jerusalem Abstract: In this talk, I will focus on a compact binary merger, which is one of the most promising sources for the next generation gravitational- wave (GW) laser interferometers such as advanced LIGO, advanced Virgo, and KAGRA. The follow-up observation of electromagnetic (EM) counterparts will play an important role to confirm the event, to identify the host galaxy, and to study the nature of the GW sources. I will discuss mass ejection mechanisms at and after the merger. Based on the mass ejection, I will show the expected EM signals from the merger including: radioactively-powered macronovae, radio- flares from macronova remnants, and short gamma-ray bursts. The detectability of these EM signals will be also discussed. Additional details of the upcoming Astrophysics' seminars can be found on the following link. ‏האירוע הזה כולל שיחת וידאו ב-Google Hangouts. הצטרף: https://hangouts.google.com/hangouts/_/mail.huji.ac.il/astrophysics?hceid=bWFpbC5odWppLmFjLmlsX2c0czhydDlpcmhwZzRvdGNybWIzZGFqcjdvQGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20.485e665o1q3rligal6svvbenh4&hs=121