Rapid observations of gamma-ray bursts with Gemini-S

Details Rapid observations of gamma-ray bursts with Gemini-S Rapid observations of gamma-ray bursts with Gemini-S

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010noao.prop..156t&link_type=abstract

NOAO Proposal ID #2010A-0156

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Scientific paper

Rapid observations of gamma-ray bursts are critical to probing their exotic physics and using GRBs themselves as probes of the universe. Our collaboration has recently found the most distant known object, GRB 090423 at z=8.23, and continues to use Gemini (supported by other facilities) to study distant and extreme bursts, and explore the diversity of their hosts and progenitors. Our primary goals are (i) to detect afterglows and hosts, and measure redshifts for the class of short-duration bursts, whose nature, despite recent breakthroughs, remains enigmatic; (ii) to locate and study GRBs at very high redshifts (z>5) where they provide a window on early galaxy evolution and the IGM; (iii) to construct a more complete redshift sample of GRBs and constrain the redshift evolution of the mass-metallicity relation; (iv) in conjunction with X-ray (Swift/Chandra/XMM) and high-energy gamma ray (Fermi) data, to test the standard jetted, relativistic fireball models.

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