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Title: Prospects for GeV-TeV detection of short gamma-ray bursts with extended emission

We discuss the GeV to TeV photon emission of gamma-ray bursts (GRBs) within the refreshed shock and the continuous injection scenarios, motivated by the observation of extended emission in a substantial fraction of short GRBs. In the first model we assume that the central engine promptly emits material with a range of Lorentz factors. When the fastest shell starts to decelerate, it drives a forward shock into the ambient medium and a reverse shock into the ejecta. These shocks are reenergized by the slower and later arriving material. In the second model we assume that there is a continued ejection of material over an extended time, and the continuously arriving new material keeps reenergizing the shocks formed by the preceding shells of ejecta. We calculate the synchrotron and synchrotron self-Compton radiation components for the forward and reverse shocks and find that prospective and current GeV-TeV range instruments such as CTA, HAWC, VERITAS, MAGIC, and HESS have a good chance of detecting afterglows of short bursts with extended emission, assuming a reasonable response time.
Authors:
;  [1]
  1. Department of Astronomy and Astrophysics Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802 (United States)
Publication Date:
OSTI Identifier:
22356736
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 787; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; AFTERGLOW; COMPTON EFFECT; COSMIC GAMMA BURSTS; DETECTION; GEV RANGE; LORENTZ INVARIANCE; PHOTON EMISSION; RELATIVISTIC RANGE; SYNCHROTRON RADIATION; TEV RANGE