Constraining GRB physics through their afterglow light curves

Details Constraining GRB physics through their afterglow light curves Constraining GRB physics through their afterglow light curves

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007cxo..prop.2404r&link_type=abstract

Chandra Proposal ID #09500789

Mathematics

Logic

Chandra Proposal Id #09500789

Scientific paper

Our current understanding of gamma-ray burst afterglow light curves has become increasingly confused, and the validity of the standard synchrotron fireball model for GRBs is nowadays increasingly questioned. In particular, achromatic breaks due to the lateral expansion of the GRB jet are not substantiated by Swift X-ray observations. It is only through this that the true energies of GRBs are constrained, and that questions such as the true rate of GRBs and the determination of cosmological parameters can be answered. We propose to use CXO to construct the late time X-ray light curves for several Swift bursts. These observations will search for evidence of achromatic jet breaks, providing the necessary insight into the GRB evolution, and the energy and activity of the central engine.

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