Very High Energy Gamma-ray Afterglow Emission of Nearby Gamma-ray Bursts

Abstract

The synchrotron self-Compton (SSC) emission from Gamma-ray Burst (GRB) forward shock can extend to the very-high-energy (VHE; $E_{\gamma }>$100 GeV) range. Such high energy photons are rare and are attenuated by the cosmic infrared background before reaching us. In this work, we discuss the prospect to detect these VHE photons using the current ground-based Cherenkov detectors. Our calculated results are consistent with the upper limits obtained with several Cherenkov detectors for GRB 030329, GRB 050509B, and GRB 060505 during the afterglow phase. For 5 bursts in our nearby GRB sample (except for GRB 030329), current ground-based Cherenkov detectors would not be expected to detect the modeled VHE signal. Only for those very bright and nearby bursts like GRB 030329, detection of VHE photons is possible under favorable observing conditions and a delayed observation time of $\la$10 hours.

9 pages,5 figure,2 tables,accepted for publication in ApJ

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Cited by in corpus (12)

• Observation of inverse Compton emission from a long $\gamma$-ray burst
• VERITAS Observations of Gamma-Ray Bursts Detected by Swift
• Discovery of an extra hard spectral component in the high-energy afterglow emission of GRB 130427A
• High energy emission of GRB 130427A: evidence for inverse Compton radiation
• The Possibility of Modeling the Very High Energy Afterglow of GRB 221009A in a Wind Environment
• MAGIC observation of the GRB080430 afterglow
• Update on the GRB universal scaling E${}_{\mathrm{X},\mathrm{iso}}$-E${}_{\gamma ,\mathrm{iso}}$-E${}_{\mathrm{pk}}$ with ten years of $Swift$ data
• GRB 131231A: Implications of the GeV emission
• An evolving GeV spectrum from prompt to afterglow: the case of GRB 160509A
• An inverse Compton origin for the 55 GeV photon in the late afterglow of GRB 130907A
• Probing Gamma-Ray Burst afterglows with the Cherenkov Telescope Array
• The Very Bright and Nearby GRB 130427A: The Extra Hard Spectral Component and Implications for Very High-energy Gamma-ray Observations of Gamma-ray Bursts