Properties of High-redshift Gamma-Ray Bursts

Author:

Fryer Chris L.ORCID,Lien Amy Y.ORCID,Fruchter AndrewORCID,Ghirlanda GiancarloORCID,Hartmann DieterORCID,Salvaterra RubenORCID,Upton Sanderbeck Phoebe R.ORCID,Johnson Jarrett L.ORCID

Abstract

Abstract The immense power of gamma-ray bursts (GRBs) makes them ideal probes of the early universe. By using absorption lines in the afterglows of high-redshift GRBs, astronomers can study the evolution of metals in the early universe. With an understanding of the nature of GRB progenitors, the rate and properties of GRBs observed at high redshift can probe the star formation history and the initial mass function of stars at high redshift. This paper presents a detailed study of the dependence on metallicity and mass of the properties of long-duration GRBs under the black hole accretion disk paradigm to predict the evolution of these properties with redshift. These models are calibrated on the current GRB observations and then used to make predictions for new observations and new missions (e.g., the proposed Gamow mission) studying high-redshift GRBs.

Funder

DOE ∣ NNSA ∣ LDRD ∣ Los Alamos National Laboratory

Publisher

American Astronomical Society

Subject

Space and Planetary Science,Astronomy and Astrophysics

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