Journal
ASTROPHYSICAL JOURNAL
Volume 779, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/779/2/106
Keywords
acceleration of particles; astroparticle physics; magnetic fields; neutrinos; relativistic processes
Categories
Funding
- U.S. National Science Foundation [0653266]
- U.S. Department of Energy [DE-AC02-05CH11231]
- Direct For Mathematical & Physical Scien [0653266] Funding Source: National Science Foundation
- Division Of Physics [0653266] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [0969661] Funding Source: National Science Foundation
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Many models of ultra-high energy cosmic-ray production involve acceleration in linear accelerators located in gamma-ray bursts, magnetars, or other sources. These transient sources have short lifetimes, which necessitate very high accelerating gradients, up to 1013 keV cm(-1). At gradients above 1.6 keV cm-1, muons produced by hadronic interactions undergo significant acceleration before they decay. This muon acceleration hardens the neutrino energy spectrum and greatly increases the high-energy neutrino flux. Using the IceCube high-energy diffuse neutrino flux limits, we set two-dimensional limits on the source opacity and matter density, as a function of accelerating gradient. These limits put strong constraints on different models of particle acceleration, particularly those based on plasma wake-field acceleration, and limit models for sources like gamma-ray bursts and magnetars.
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