Constraining the rate of GRB visible afterglows with the CFHTLS Very Wide Survey

Frederic Malacrino, Jean-Luc Atteia, Michel Boer +3

We analyze images of the CFHTLS Very Wide Survey to search for visible orphan afterglows from gamma-ray bursts (GRBs). We have searched 490 square degrees down to magnitude r'=22.5…