Long Gamma-Ray Bursts as standard candles

Type Conference Paper
Names Davide Lazzati, Giancarlo Ghirlanda, Gabriele Ghisellini, Lara Nava, Claudio Firmani, Brian Morsony, Mitchell C. Begelman
Proceedings Title AIP Conference Proceedings
Conference Name Gamma-Ray Bursts in the Swift Era: Sixteenth Maryland Astrophysics Conference
Place Melville, NY
Publisher American Institute of Physics
Volume 836
Pages 513-521
Series AIP Conference Proceedings
Date May 1, 2006
URL http://adsabs.harvard.edu/abs/2006AIPC..836..513L
Library Catalog NASA ADS
Abstract As soon as it was realized that long GRBs lie at cosmological distances, attempts have been made to use them as cosmological probes. Besides their use as lighthouses, a task that presents mainly the technological challenge of a rapid deep high resolution follow-up, researchers attempted to find the Holy Grail: a way to create a standard candle from GRB observables. We discuss here the attempts and the discovery of the Ghirlanda correlation, to date the best method to standardize the GRB candle. Together with discussing the promises of this method, we will underline the open issues, the required calibrations and how to understand them and keep them under control. Even though GRB cosmology is a field in its infancy, ongoing work and studies will clarify soon if and how GRBs will be able to keep up to the promises.
Tags COSMOLOGY, gamma-ray bursts, gamma-ray sources
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