Selection Effects on the Observed Redshift Dependence of GRB Jet Opening Angles

Rui-Jing Lu, Jun-Jie Wei, Shu-Fu Qin +1

Apparent redshift dependence of the jet opening angles (${\theta }_{\mathrm{j}}$) of gamma-ray bursts (GRBs) is observed from current GRB sample. We investigate whether this dependence can be e…