Luminosity Function of Collapsar Gamma-Ray Bursts: The Progenitor of Long Gamma-Ray Bursts Is Not Singular

• Published in: The Astrophysical journal Vol. 976; no. 2; pp. 170 - 177
• Main Authors: Qu, Yan-Kun, Man, Zhong-Xiao, Yi, Shuang-Xi, Yang, Yu-Peng
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 01.12.2024; IOP Publishing
• Subjects: Collapsars; Density; Evolution; Gamma ray bursts; Gamma rays; Legal issues; Luminosity; Luminosity function; Red shift; Star & galaxy formation; Star formation; Star formation rate

Gamma-ray bursts (GRBs) are powerful probes of the high-redshift Universe. However, the proportion of collapsar GRBs among long GRBs and their event rate relative to the star formation rate (SFR) remain contentious issues. We assume that long GRBs with z ≥ 2 are all collapsar GRBs and construct the...