Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-Energy Cosmic Rays from Gamma-Ray Bursts   A model is proposed for the origin of cosmic rays (CRs) from ~10^14 eV to the
highest energies, >10^20 eV. Gamma-Ray Bursts (GRBs) are assumed to inject CR
protons and ions into the interstellar medium of star-forming
galaxies--including the Milky Way--with a power law spectrum extending to a
maximum energy ~10^20 eV. The CR spectrum near the knee is fit with CRs trapped
in the Galactic halo that were accelerated and injected by an earlier Galactic
GRB. These CRs diffuse in the disk and halo of the Galaxy due to gyroresonant
pitch-angle scattering with MHD turbulence in the Galaxy's magnetic field. The
preliminary (2001) KASCADE data through the knee of the CR spectrum are fit by
a model with energy-dependent propagation of CR ions from a single Galactic
GRB. Ultra-high energy CRs (UHECRs), with energies above the ankle are assumed
to propagate rectilinearly with their spectrum modified by photo-pion,
photo-pair, and expansion losses. We fit the measured UHECR spectrum assuming
comoving luminosity densities of GRB sources consitent with possible star
formation rate histories of the universe. For power-law CR proton injection p>2
this model implies that the nonthermal content in the GRB blast waves is
hadronically dominated by a factor ~60-200. Calculations show that 100 TeV-100
PeV neutrinos could be detected several times per year from all GRBs in
kilometer-scale neutrino detectors such as IceCube, for GRB blast-wave Doppler
factors <~200. GLAST measurements of gamma-ray components and cutoffs will
constrain the product of nonthermal baryon loading and radiative efficiency,
limit the Doppler factor, and test this senario.

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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
10
The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: math
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The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
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The categories of this paper are: cs
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The categories of this paper are: hep-th
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The categories of this paper are: econ
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The categories of this paper are: nlin