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Probing dark energy with gamma-ray bursts

K. Takahashi·M. Oguri·K. Kotake·H. Ohno
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Abstract

We propose a new method to use gamma-ray bursts (GRBs) as an alternative probe of the dark energy. By calibrating luminosity-variability and luminosity-lag time relations at low redshift where distance-redshift relations have been already determined from type Ia supernova (SNIa), GRBs at high redshift can be used as a distance indicator. We investigate the potential impact of future GRB data on determining the current matter density $Ω_{m}$ and the dark energy equation of state $w$ which is assumed to be constant. We show that a combined analysis of a data set expected from the {\it Swift} and the current SNIa data results in excellent determination of both $Ω_{m}$ and $w$.

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K. Takahashi, M. Oguri, K. Kotake, H. Ohno. 2003-06-01. Probing dark energy with gamma-ray bursts. https://arxiv.org/abs/astro-ph/0305260

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