Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apr.y2003h&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
The detection of afterglows (long-lived emission) from gamma-ray bursts (GRBs) has revolutionized the field. As a result of the discovery of these fading counterparts we now know the GRB distance and energy scale, and are beginning to gain an understanding of the properties of the host galaxies. As is the case with supernovae, studying the evolution of the broadband emission with time in principal enables us to probe the geometry of the explosion, the density of the medium immediately surrounding the progenitor, as well as the properties of the interstellar medium in the host galaxy. Accomplishing this requires a model for the physics of the relativistic shock, an understanding of the absorbing properties of the insterstellar medium, and high-quality radio through X-ray measurements. In this talk I will focus on several well-studied events, describing what broadband afterglow observations can contribute in principal, comparing with what has to-date been securely understood from the data.
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