Evidence for a Supernova in the Ic Band Light Curve of the Optical Transient of GRB 970508
V. V. Sokolov
Abstract
Unique data on BVRI brightness curves of the OT of GRB 970508 obtained with the 6-m telescope have been interpreted in the framework of the GRB-SN (supernovae) connection. The effect must be maximal in the Ic band as OT GRB 970228. The peak absolute (MB) magnitude of the suggested SN must be around -19.5 for the OT of GRB 970508. If all or the main part of long GRBs are associated with SNe, the GRB host galaxies (for ground-based observations, at least) must be dimmer than the peak magnitude of the SN.
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