Constraining dark energy with gamma-ray bursts

TL;DR

This paper explores how gamma-ray burst data can be used to constrain dark energy models, but current data is insufficient for tight constraints.

Contribution

It compares two methods for analyzing GRB data to constrain dark energy parameters, highlighting limitations of current data.

Findings

Current GRB data cannot tightly constrain dark energy models.

Two analysis methods yield broad parameter ranges.

GRB data alone are insufficient for precise dark energy constraints.

Abstract

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.