2005/02/23 by J.‐L. Atteia, J. -L. Atteia, N. Kawai +39 · 1 citation
Engineering · Physics and Astronomy · #Astronomy and Astrophysical Research #CCD and CMOS Imaging Sensors #Gamma-ray bursts and supernovae #astro-ph
paper · pdf · doi:10.1086/430057
published as Astrophys.J. 626 (2005) 292-297 · 19 pages, 4 figures, submitted to ApJ
arxiv created 2005/02/23 · openalex publication_date 2005/06/02 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
GRB 020124 and GRB 030323 constitute half the sample of gamma-ray bursts (GRBs) with a measured redshift greater than 3. This paper presents the temporal and spectral properties of these two GRBs detected and localized with the High Energy Transient Explorer 2 ( HETE-2 ). While they have nearly identical redshifts ( z = 3.20 for GRB 020124 and z = 3.37 for GRB 030323), these two GRBs span about an order of magnitude in fluence, thus sampling distinct regions of the GRB luminosity function. The properties of these two bursts are compared with those of the bulk of the GRB population detected by HETE-2 . We also discuss the energetics of GRB 020124 and GRB 030323 and show that they are compatible with the E p - E iso relation discovered by Amati et al. Finally, we compute the maximum redshifts at which these bursts could have been detected by HETE-2 , and we address various issues connected with the detection and localization of high- z GRBs.