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arXiv · 1005.5055

Cosmological Model-independent Gamma-ray Bursts Calibration and its Cosmological Constraint to Dark Energy

Lixin Xu
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Abstract

As so far, the redshift of Gamma-ray bursts (GRBs) can extend to $z\sim 8$ which makes it as a complementary probe of dark energy to supernova Ia (SN Ia). However, the calibration of GRBs is still a big challenge when they are used to constrain cosmological models. Though, the absolute magnitude of GRBs is still unknown, the slopes of GRBs correlations can be used as a useful constraint to dark energy in a completely cosmological model independent way. In this paper, we follow Wang's model-independent distance measurement method and calculate their values by using 109 GRBs events via the so-called Amati relation. Then, we use the obtained model-independent distances to constrain $Λ$CDM model as an example.

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Lixin Xu. 2012-04-21. Cosmological Model-independent Gamma-ray Bursts Calibration and its Cosmological Constraint to Dark Energy. https://doi.org/10.1088/1475-7516%2F2012%2F04%2F025

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