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Cosmography by GRBs

Relations connecting gamma ray burst quantities can be used to constrain cosmographic parameters of the Hubble law at medium-high redshifts. We consider a sample of 27 gamma ray bursts to construct the luminosity distance to redshift relation and derive the values of the parameters $q_0$, $j_0$, and $s_0$. The analysis is compared with other methods in the literature. gamma gay bursts, if calibrated by SNeIa, seem reliable as distance indicators and give cosmographic parameters in agreement with the $Λ$CDM model.

preprint2008arXivOpen access
S. CapozzielloL. Izzo
astro-ph
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Open access2 authors1 topic
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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S. CapozzielloL. Izzo

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