Neutrino emission from high-energy component gamma-ray bursts - Astrophysics > High Energy Astrophysical PhenomenaReportar como inadecuado




Neutrino emission from high-energy component gamma-ray bursts - Astrophysics > High Energy Astrophysical Phenomena - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: Gamma-ray bursts have the potential to produce the particle energies up to$10^{21}$ eV and the energy budget $10^{44} m{erg yr^{-1} Mpc^{-3}}$ toaccommodate the spectrum of the highest energy cosmic rays; on the other hand,there is no observational evidence yet that they accelerate hadrons. Fermirecently observed two bursts that exhibit a power-law high-energy extension ofthe typical Band spectrum that extends to $\sim 30$ GeV. On the basis offireball phenomenology we argue that they, along with GRB941017 observed byEGRET in 1994, show indirect evidence for considerable baryon loading. Sincethe detection of neutrinos is the only unambiguous way to establish that GRBsaccelerate cosmic rays, we use two methods to estimate the neutrino fluxproduced when the baryons interact with fireball photons to produce chargedpions and neutrinos. While the number of events expected from the Fermi burstsis small, we conclude that an event like GRB941017 will be detected by IceCubeif gamma-ray bursts are indeed the sources of the cosmic rays.



Autor: J.K. Becker, F. Halzen, A. O'Murchadha, M. Olivo

Fuente: https://arxiv.org/







Documentos relacionados