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2009A&A...508...63I - Astronomy and Astrophysics, volume 508, 63-67 (2009/12-2)
Extending the Hubble diagram by gamma ray bursts.
IZZO L., CAPOZZIELLO S., COVONE G. and CAPACCIOLI M.
Abstract (from CDS):
A new method to constrain the cosmological equation of state is proposed by using combined samples of gamma-ray bursts (GRBs) and supernovae (SNeIa). The Chevallier-Polarski-Linder parameterization is adopted for the equation of state in order to find a realistic approach to achieve the deceleration/acceleration transition phase of dark energy models.We find that GRBs, calibrated by SNeIa, could be good distance indicators capable of discriminating between cosmological models and ΛCDM model at high redshift.
Abstract Copyright: ∼
Journal keyword(s): gamma rays: bursts - cosmological parameters - distance scale
Simbad objects: 3
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