Extensive multiband study of the X-ray rich GRB 050408. A likely off-axis event with an intense energy injection

A de Ugarte Postigo, T. A. Fatkhullin, G. Johannesson +40

Aims. Understand the shape and implications of the multiband light curve of GRB 050408, an X-ray rich (XRR) burst. Methods. We present a multiband optical light curve, covering the…