Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2012-01-26
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
42 pages, 14 figures. Invited review for Advances in High Energy Physics. Comments welcome!
Scientific paper
We review the particle physics ingredients affecting the normalization, shape, and flavor composition of astrophysical neutrinos fluxes, such as different production modes, magnetic field effects on the secondaries (muons, pions, kaons), and flavor mixing, where we focus on p-gamma interactions. We also discuss the interplay with neutrino propagation and detection, including the possibility to detect flavor and its application in particle physics, and the use of the Glashow resonance to discriminate p-gamma from p-p interactions in the source. We illustrate the implications on fluxes and flavor composition with two different models: 1) the target photon spectrum is dominated by synchrotron emission of co-accelerated electrons and 2) the target photon spectrum follows the observed photon spectrum of gamma-ray bursts. In the latter case, the multi-messenger extrapolation from the gamma-ray fluence to the expected neutrino flux is highlighted.
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