Toward the Progenitors of Gamma-Ray Bursts

Details Toward the Progenitors of Gamma-Ray Bursts Toward the Progenitors of Gamma-Ray Bursts

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.2602b&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #26.02; Bulletin of the American Astronomical Society, Vol. 33, p.1349

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A great deal of progress has been made in the past few years toward the determination of the nature of the progenitors of cosmological gamma-ray bursts (GRBs). Though by no means definitive, the evidence points to massive stars (or "collapsars"), rather than merging neutron stars, as the culprits. I will discuss this evidence, focusing on both the late-time supernova signatures in GRB afterglows and recent results from a large HST and Keck survey. In addition, I will present work from the commissioning of JCAM, a new dual-band optical CCD imager for the Palomar 200-inch telescope designed to rapidly observe GRB afterglow.

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