The differing environments of dark gamma-ray bursts

Details The differing environments of dark gamma-ray bursts The differing environments of dark gamma-ray bursts

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hst..prop12378l&link_type=abstract

HST Proposal ID #12378. Cycle 18

Computer Science

Scientific paper

Dark gamma-ray bursts {GRBs} - where the optical emission is apparently suppressed - can only be reliably localized by their X-ray afterglows. Here we propose to complete a survey using the sensitivity and point spread function of Chandra to precisely pinpoint the GRB locations, and HST to locate and study the host galaxies. Our results to date are suggestive of dark GRBs originating in more luminous and {so far exclusively} merging galaxies. Our increased sample will allow us to make strong statistical statements as to these differences and so elucidate both the nature of dark GRBs, and the relationships between GRBs and both obscured and unobscured star formation.;

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