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

TL;DR

This paper presents a model-independent calibration method for gamma-ray bursts using the Amati relation, enabling their use as cosmological probes to constrain dark energy without assuming a specific cosmological model.

Contribution

It introduces a novel, model-independent calibration approach for GRBs based on the slopes of their correlations, facilitating dark energy constraints.

Findings

Calibrated 109 GRBs using a model-independent method.

Constrained the ΛCDM model with GRB data.

Demonstrated GRBs as effective probes for dark energy.

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 $\Lambda$CDM model as an example.