English

Calibration of gamma-ray bursts luminosity correlations using gravitational waves as standard sirens

High Energy Astrophysical Phenomena 2019-03-06 v1 Cosmology and Nongalactic Astrophysics

Abstract

Gamma-ray bursts (GRBs) are a potential tool to probe high-redshift universe. However, the circularity problem enforces people to find model-independent methods to study the luminosity correlations of GRBs. Here, we present a new method which uses gravitational waves as standard sirens to calibrate GRB luminosity correlations. For the third-generation ground-based GW detectors (i.e., Einstein Telescope), the redshifts of gravitational wave (GW) events accompanied electromagnetic counterparts can reach out to 4\sim 4, which is more distant than type Ia supernovae (z2z\lesssim 2). The Amati relation and Ghirlanda relation are calibrated using mock GW catalogue from Einstein Telescope. We find that the 1σ1\sigma uncertainty of intercepts and slopes of these correlations can be constrained to less than 0.2\% and 8\% respectively. Using calibrated correlations, the evolution of dark energy equation of state can be tightly measured, which is important for discriminating dark energy models.

Keywords

Cite

@article{arxiv.1902.09677,
  title  = {Calibration of gamma-ray bursts luminosity correlations using gravitational waves as standard sirens},
  author = {Yu-Yang Wang and F. Y. Wang},
  journal= {arXiv preprint arXiv:1902.09677},
  year   = {2019}
}

Comments

10 pages, 5 figures, accepted for publication in ApJ