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Strategies for prompt searches for GRB afterglows: the discovery of the GRB 001011 optical/near-infrared counterpart using colour-colour selection
J. Gorosabel, J. U. Fynbo, J. Hjorth +25
We report the discovery of the optical and near-infrared counterparts to GRB 001011. The GRB 001011 error box determined by Beppo-SAX was simultaneously imaged in the near-infrared…
A novel approach for extracting time-delays from lightcurves of lensed quasar images
I. Burud, P. Magain, S. Sohy +1
We present a new method to estimate time delays from light curves of lensed quasars. The method is based on chi^2 minimization between the data and a numerical model light curve. A…
Constraints on the optical afterglow emission of the short/hard burst GRB 010119
J. Gorosabel, M. I. Andersen, J. Hjorth +7
We report optical observations of the short/hard burst GRB 010119 error box, one of the smallest error boxes reported to date for short/hard GRBs. Limits of R > 22.3 and I > 21.2 a…
The Jet and the Supernova in GRB990712
G. Bjornsson, J. Hjorth, P. Jakobsson +2
The optical light curve of the afterglow following the gamma-ray burst GRB990712 is re-examined. Recently published polarization measurements of that source require a collimated ou…
The Host Galaxy and Optical Light Curve of the Gamma-Ray Burst GRB 980703
S. Holland, J. P. U. Fynbo, J. Hjorth +10
We present deep HST/STIS and ground-based photometry of the host galaxy of the gamma-ray burst GRB 980703 taken 17, 551, 710, and 716 days after the burst. We find that the host is…
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…