Neutrinos and Gamma Rays from Photomeson Processes in Gamma Ray Bursts

Details Neutrinos and Gamma Rays from Photomeson Processes in Gamma Ray Bursts Neutrinos and Gamma Rays from Photomeson Processes in Gamma Ray Bursts

2003-12-09

arxiv.org/abs/astro-ph/0312249v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, in 2003 Santa Fe Conference on GRBs

Scientific paper

10.1063/1.1810825

Acceleration of high-energy hadrons in GRB blast waves will be established if high-energy neutrinos are detected from GRBs. Recent calculations of photomeson neutrino production are reviewed, and new calculations of high-energy neutrinos and the accompanying hadronic cascade radiation are presented. If hadrons are injected in GRB blast waves with an energy corresponding to the measured hard X-ray/soft gamma-ray emission, then only the most powerful bursts at fluence levels >~ 3e-4 erg cm^{-2} offer a realistic prospect for detection of muon neutrinos. Detection of high-energy neutrinos are likely if GRB blast waves have large baryon loads and Doppler factors <~ 200. Significant limitations on the hadronic baryon loading and the number of expected neutrinos are imposed by the fluxes from pair-photon cascades initiated in the same processes that produce neutrinos.

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