Murase 2008 瞬时阶段的高能中微子

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Title:		On Prompt High-Energy Neutrino Emission from Gamma-Ray Bursts
Authors:		Murase, Kohta
Publication:		eprint arXiv:0807.0919
Publication Date:		07/2008
Origin:		ARXIV
Keywords:		Astrophysics
Comment:		5 pages, 3 figures
Bibliographic Code:		2008arXiv0807.0919M

Abstract

Some recent observations have suggested the prompt emission at hundreds of keV from gamma-ray bursts (GRBs) could not simply be explained by the optically thin synchrotron emission. We investigate neutrino emission by using detailed numerical calculations under alternative models, the photospheric emission and synchrotron-self-Compton (SSC) emission models. In the former model, we find that neutrinos from pp reaction can be very important below (10-100) TeV energies. They may be detected by future neutrino telescopes such as IceCube/KM3Net and useful as a probe of cosmic-ray acceleration around/below the photosphere. In the latter model, we expect about EeV neutrinos produced via photomeson production. Predicted neutrino spectra are different from that in the canonical prediction, and neutrino signals would be useful as one of the clues to the nature of GRBs (the jet composition, the emission radius, the magnetic field and so on).

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