Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 510, Issue 2, Pages 2928-2947Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stab3559
Keywords
cosmological parameters; dark energy; cosmology: observations; gamma-ray bursts
Categories
Funding
- DOE [DE-SC0011840]
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This study uses three recently compiled GRB data sets correlated with redshift, as well as the best available Amati-correlated GRB data, to constrain cosmological model parameters. The resulting constraints are weak but largely consistent with established data.
We show that each of the three Dainotti-correlated gamma-ray burst (GRB) data sets recently compiled by Wang et al. and Hu et al., that together probe the redshift range 0.35 <= z <= 5.91, obey cosmological-model-independent Dainotti correlations and so are standardizable. We use these GRB data in conjunction with the best currently available Amati-correlated GRB data, that probe 0.3399 <= z <= 8.2, to constrain cosmological model parameters. The resulting cosmological constraints are weak, providing lower limits on the non-relativistic matter density parameter, mildly favouring non-zero spatial curvature, and largely consistent with currently accelerated cosmological expansion as well as with constraints determined from better-established data.
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