The extraordinarily bright optical afterglow of GRB 991208 and its host galaxy

A. J. Castro-Tirado, V. V. Sokolov, J. Gorosabel +50

Observations of the extraordinarily bright optical afterglow (OA) of GRB 991208 started 2.1 d after the event. The flux decay constant of the OA in the R-band is -2.30 +/- 0.07 up…