VHE Gamma-ray Afterglow Emission from Nearby GRBs

Details VHE Gamma-ray Afterglow Emission from Nearby GRBs VHE Gamma-ray Afterglow Emission from Nearby GRBs

2008-10-21

arxiv.org/abs/0810.3894v1

AIP Conf.Proc.1085:471-474,2008

Astronomy and Astrophysics

Astrophysics

Proceeding of "Heidelberg International Symposium on High Energy Gamma-Ray Astronomy", held in Heidelberg, 7-11 July 2008, sub

Scientific paper

10.1063/1.3076710

Gamma-ray Bursts (GRBs) are among the potential extragalactic sources of very-high-energy (VHE) gamma-rays. We discuss the prospects of detecting VHE gamma-rays with current ground-based Cherenkov instruments during the afterglow phase. Using the fireball model, we calculate the synchrotron self-Compton (SSC) emission from forward-shock electrons. The modeled results are compared with the observational afterglow data taken with and/or the sensitivity level of ground-based VHE instruments (e.g. STACEE, H.E.S.S., MAGIC, VERITAS, and Whipple). We find that modeled SSC emission from bright and nearby bursts such as GRB 030329 are detectable by these instruments even with a delayed observation time of ~10 hours.

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