Evaluating the bulk Lorentz factors of outflow material: lessons learned from the extremely-energetic outburst GRB 160625B

Yuan-Zhu Wang, Hao Wang, Shuai Zhang +6

GRB 160625B is an extremely-bright outburst with well-monitored afterglow emission. The geometry-corrected energy is high up to $\sim 5.2\times 10^{52}$ erg or even $\sim 8\times 10…