NOAO >   Observing Info >   Approved Programs >   2010B-0213

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Proposal Information for 2010B-0213


PI: Nial Tanvir, University of Leicester, nrt3@star.le.ac.uk
Address: Department of Physics and Astronomy, University Road, Leicester LE1 7RH, United Kingdom

CoI: Andrew Levan, University of Warwick
CoI: Andrew Fruchter, Space Telescope Science Institute
CoI: Klaas Wiersema, University of Leicester
CoI: Rhaana Starling, University of Leicester
CoI: John Graham, Space Telescope Science Institute
CoI: Daniel Reichart, University of North Carolina
CoI: David Bersier, Liverpool John Moores University
CoI: Pall Jakobsson, University of Iceland
CoI: Paul O'Brien, University of Leicester
CoI: James Rhoads, Arizona State University
CoI: Jens Hjorth, NBI: DARK, Copenhagen

Title: Investigating gamma-ray bursts and their use as cosmological probes

Abstract: 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=8.2, 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 approach to both study individual key events, and build up statistical samples. Primary goals remain (i) to observe GRBs at very high redshifts, where they provide luminous backlights with which to explore the early ISM/IGM, and also the means to identify and characterise their faint hosts; (ii) to detect afterglows and measure redshifts for the class of short-duration bursts, whose nature, despite recent breakthroughs, remains enigmatic; (iii) to construct a more complete redshift sample of GRBs and constrain the evolution of the mass-metallicity relation; (iv) in conjunction with X-ray and gamma-ray data, to test the standard jetted, relativistic fireball models and to explore the connection between long-duration gamma-ray bursts and the core-collapse events that accompany them.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2010B-0213

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