Becker 2009 高能部分的伴随的中微子辐射

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Title:		Neutrino Emission from High-energy Component Gamma-ray Bursts
Authors:		Becker, Julia K.; Halzen, Francis; Murchadha, Aongus Ó.; Olivo, Martino
Affiliation:		AA(Fakultät f. Physik and Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany olivo@tp4.rub.de), AB(Department of Physics, University of Wisconsin, Madison, WI-53706, USA omurchadha@wisc.edu), AC(Department of Physics, University of Wisconsin, Madison, WI-53706, USA ), AD(Fakultät f. Physik and Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany ; Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden)
Publication:		The Astrophysical Journal, Volume 721, Issue 2, pp. 1891-1899 (2010). (ApJ Homepage)
Publication Date:		10/2010
Origin:		IOP
ApJ Keywords:		gamma-ray burst: general, gamma-ray burst: individual: GRB941017 GRB090510 GRB090902b
DOI:		10.1088/0004-637X/721/2/1891
Bibliographic Code:		2010ApJ...721.1891B

Abstract

Gamma-ray bursts (GRBs) have the potential to produce the particle energies (up to 10²¹ eV) and energy budget (10⁴⁴ erg yr^-1 Mpc^-3) to accommodate the spectrum of the highest energy cosmic rays; on the other hand, there is no observational evidence that they accelerate hadrons. The Fermi Gamma-ray Space Telescope recently observed two bursts that exhibit a power-law high-energy extension of a typical (Band) photon spectrum that extends to ~30 GeV. On the basis of fireball phenomenology we argue that these two bursts, along with GRB941017 observed by EGRET in 1994, show indirect evidence for considerable baryon loading. Since the detection of neutrinos is the only unambiguous way to establish that GRBs accelerate protons, we use two methods to estimate the neutrino flux produced when they interact with fireball photons to produce charged pions and neutrinos. While the number of events expected from the two Fermi bursts discussed is small, should GRBs be the sources of the observed cosmic rays, a GRB941017-like event that has a hadronic power-law tail extending to several tens of GeV will be detected by the IceCube neutrino telescope.

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