Extended Data Fig. 1: Early evolution of the colour index.
From: Signatures of a jet cocoon in early spectra of a supernova associated with a γ-ray burst
The evolution of the u − b, b − v, uvw1 − u and uvw2 − uvw1 colour indices, computed from UVOT data in the first 18 days after the GRB trigger. Error bars represent 1 s.d.
