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The Jet and the Supernova in GRB990712

G. Bjornsson·J. Hjorth·P. Jakobsson·L. Christensen·S. Holland
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Abstract

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 outflow geometry that in turn predicts a break in the light curve. We show that the V-band light curve is consistent with such a break and that the post-break light curve evolution is dominated by a supernova contribution.

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G. Bjornsson, J. Hjorth, P. Jakobsson, L. Christensen, S. Holland. 2001-04-10. The Jet and the Supernova in GRB990712. https://doi.org/10.1086/320328

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