Are GRBs the same at high and low redshift?

Author: Owen Littlejohns

Abstract: Due to their highly luminous nature, gamma-ray bursts (GRBs) are useful tools in studying the early Universe (up to z∼ 10). In this talk I will consider whether the available subset of Swift high redshift GRBs are unusual when compared to analogous simulations of the bright low redshift sample. By simulating data from the Burst Alert Telescope (BAT) the light curves of these bright bursts are obtained over an extensive range of redshifts, revealing complicated evolution in properties of the prompt emission such as T90.