Ultra–high-Energy Cosmic-Ray Sources and Large-Scale Magnetic Fields
Open Access
- 10 September 1997
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 486 (2) , L115-L118
- https://doi.org/10.1086/310847
Abstract
Protons of energies up to about 1020 eV can be subject to significant deflection and energy-dependent time delay in large-scale extragalactic or halo magnetic fields of strengths comparable to current upper limits. By performing three-dimensional Monte Carlo simulations of nucleon propagation, we show how observations of arrival direction and time distributions can be used to measure the structure and strength of large-scale magnetic fields and constrain the nature of the source of ultra-high-energy cosmic rays.Keywords
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