High-energy $γ$-ray emission from GRBs
| dc.creator | De Paolis, F. | |
| dc.creator | Ingrosso, G. | |
| dc.creator | Orlando, D. | |
| dc.date | 2000-06-07 | |
| dc.date.accessioned | 2026-07-07T01:53:53Z | |
| dc.date.available | 2026-07-07T01:53:53Z | |
| dc.description | GRBs are nowadays a rather well understood phenomenon in the soft (KeV-MeV) $γ$-ray energy band, while only a few GRBs have been observed at high photon energies ($E_γ \ut > 1$ GeV). It is also widely recognized that GRBs accelerate protons to relativistic energies and that dense media are often present nearby the sources. Within this framework we compute in detail the high-energy $γ$-ray flux from the decay of neutral pions produced through the interaction of accelerate protons with nucleons in the surrounding medium. We also take into account the local and intergalactic $γ$-ray absorption. The presence of magnetic fields around the GRB sources causes the deflection of the accelerated protons and so a temporal spread of the produced high-energy $γ$-rays with respect to the signal in the soft $γ$-ray band. Moreover, we analyze the possibility to detect the $γ$-ray signal in the GeV-TeV energy range by the ARGO detector under construction in Tibet. | |
| dc.description | 9 pages, 7 figures, abstract shortened, to appear in Astronomy and Astrophysics | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0006095 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0006095 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/1132 | |
| dc.subject | Astrophysics | |
| dc.title | High-energy $γ$-ray emission from GRBs | |
| dc.type | text |