) Chinese Journal ofAstronomy and Astrophysics Supernovae and Gamma-Ray Bursts

Abstract I review the observational status of the Supernova/Gamma-Ray Burst (GRB) con-nection. Available data suggest that Supernovae (SNe) associated with GRBs form an het-erogeneous class of objects including bright and faint hypernovae (Hyp) and perhaps also ‘standard ’ Ib/c events. Current estimates of SN and GRB rates and beaming angles yield ratios GRB/SNe-Ibc 2 % and GRB/Hyp 25%. In the few SN/GRB associations so far discovered the SN and GRB events appear to go off simultaneously, although data do not exclude that the SN may precede the GRB by a few days. Key words: stars – supernovae – Gamma-Ray Burst