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IFU observations of the GRB 980425/SN 1998bw host galaxy: emission line ratios in GRB regions
L. Christensen, P. M. Vreeswijk, J. Sollerman +3
The collapsar model predicts that the progenitors of Gamma-ray Bursts (GRBs) are metal poor in Fe group elements. The existence of low metallicity stellar populations could manifes…
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…
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…