Constraining dark energy with gamma-ray bursts

Details Constraining dark energy with gamma-ray bursts Constraining dark energy with gamma-ray bursts

2009-05-23

arxiv.org/abs/0905.3836v2

Astrophys.J.714:1347-1354,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

27 pages, 12 figures, two methods of analysing GRB data, updated to match published version.

Scientific paper

10.1088/0004-637X/714/2/1347

We use the measurement of gamma-ray burst (GRB) distances to constrain dark energy cosmological model parameters. We employ two methods for analyzing GRB data - fitting luminosity relation of GRBs in each cosmology and using distance measures computed from binned GRB data. Current GRB data alone cannot tightly constrain cosmological parameters and allow for a wide range of dark energy models.

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