Identifying the host galaxies for optically dark gamma-ray bursts

Details Identifying the host galaxies for optically dark gamma-ray bursts Identifying the host galaxies for optically dark gamma-ray bursts

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop11840l&link_type=abstract

HST Proposal ID #11840. Cycle 17

Physics

Scientific paper

We propose to use the high spatial resolution of Chandra to obtain precise positions for a sample of Gamma-Ray Bursts {GRBs} with no optical afterglows, where the optical light is suppressed relative to the X-ray flux. These bursts are likely to be highly obscured and may have different environments from the optically bright GRBs. Our Chandra observations will {unlike Swift XRT positions} allow for the unique identification of a host galaxy. To locate these host galaxies we will follow up our Chandra positions with deep optical and IR observations with HST. The ultimate aim is to understand any differences between the host galaxies of optically dark and bright GRBs, and how these affect the use of GRBs as tracers of starformation and galaxy evolution at high redshift.;

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