Short GRBs: Opening Angles, Local Neutron Star Merger Rate, and Off-axis Events for GRB/GW Association

• Published in: The Astrophysical journal Vol. 857; no. 2; pp. 128 - 137
• Main Authors: Jin, Zhi-Ping, Li, Xiang, Wang, Hao, Wang, Yuan-Zhu, He, Hao-Ning, Yuan, Qiang, Zhang, Fu-Wen, Zou, Yuan-Chuan, Fan, Yi-Zhong, Wei, Da-Ming
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 20.04.2018; IOP Publishing
• Subjects: Astrophysics; binaries: close; Ejecta; Gamma ray bursts; Gamma rays; gamma-ray burst: individual (GRB 150424A, GRB 160821B); gravitational waves; Light curve; Neutron stars; Neutrons; Star mergers; Stars & galaxies

The jet breaks in the afterglow light curves of short gamma-ray bursts (SGRBs), rarely detected so far, are crucial for estimating the half-opening angles of the ejecta (θj) and hence the neutron star merger rate. In this work, we report the detection of jet decline behaviors in GRB 150424A and GRB...