2007/01/10 by D. Horan, R. W. Atkins, H. M. Badran +56 · 1 citation
Physics and Astronomy · #Afterglow #Astronomy and Astrophysical Research #Astrophysics and Cosmic Phenomena #Flare #Gamma-ray burst #Gamma-ray bursts and supernovae #High energy #Spectral energy distribution #Telescope #astro-ph
paper · pdf · doi:10.1086/509567
published as Astrophys.J.655:396-405,2007 · Accepted for publication in the January 20, 2007 volume of the Astrophysical Journal, 655, 396
arxiv created 2007/01/10 · openalex publication_date 2007/01/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Gamma-ray burst (GRB) observations at very high energies (VHE; E > 100 GeV) can impose tight constraints on some GRB emission models. Many GRB afterglow models predict a VHE component similar to that seen in blazars and plerions, in which the GRB spectral energy distribution has a double-peaked shape extending into the VHE regime. VHE emission coincident with delayed X-ray flare emission has also been predicted. GRB follow-up observations have had high priority in the observing program at the Whipple 10 m gamma-ray telescope, and GRBs will continue to be high-priority targets as the next-generation observatory, VERITAS, comes online. Upper limits on the VHE emission at late times (>~4 hr) from seven GRBs observed with the Whipple Telescope are reported here.