Speaker
Description
Currently operating and future planned missions need robust methods in determining the distances to GRBs. We purpose to provide a simple method for estimating distances to cosmological gamma-ray bursts. We construct $E_{\rm p, i}$-$E_{\rm iso}$ correlation for short gamma-ray bursts based on events with well established spectral peak energies. Applying minimal criteria, we sample SGRBs from the GBM catalogue and calculate spectral peak energy and isotropic energy using a range of distances between maximal and minimal observed redshifts. We iterate through a range of redshifts, and each event is examined for the condition to cross the main line of the $E_{\rm p, i}$-$E_{\rm iso}$ relation and additionally, its $\pm1\sigma$ and $\pm3\sigma$ uncertainty areas. Consequently, we take those intersections as the best redshift estimates for an individual burst. Redshifts estimated in such a way are then compared to those bursts with measured distances.
