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An upper limit on the cosmic-ray luminosity of individual sources from gamma-ray observations
(Institute of Physics - IOPBristol, 2013-12)
Different types of extragalactic objects are known to produce TeV gamma-rays. Some of these objects are the most probable candidates to accelerate cosmic rays up to '10 POT.20' eV. It is very well known that gamma-rays can ...
Magnetic diffusion effects on the Ultra-High Energy Cosmic Ray spectrum and composition
(Iop Publishing, 2013-09)
We discuss the effects of diffusion of high energy cosmic rays in turbulent extra-galactic magnetic fields. We find an approximate expression for the low energy suppression of the spectrum of the different mass components ...
Bounds on direct couplings of superheavy metastable particles to the inflaton field from ultra high energy cosmic ray events
(World Scientific Publ Co Pte Ltd, 2002-10-30)
Top-down models for the origin of ultra high energy cosmic rays (UHECR's) propose that these events are the decay products of relic superheavy metastable particles, usually called X particles. These particles can be produced ...
Bounds on direct couplings of superheavy metastable particles to the inflaton field from ultra high energy cosmic ray events
(World Scientific Publ Co Pte Ltd, 2002-10-30)
Top-down models for the origin of ultra high energy cosmic rays (UHECR's) propose that these events are the decay products of relic superheavy metastable particles, usually called X particles. These particles can be produced ...
A search for anisotropy in the arrival directions of ultra high energy cosmic rays recorded at the Pierre Auger Observatory
(2012)
Observations of cosmic ray arrival directions made with the Pierre Auger Observatory have previously provided evidence of anisotropy at the 99% CL using the correlation of ultra high energy cosmic rays (UHECRs) with objects ...
A search for anisotropy in the arrival directions of ultra high energy cosmic rays recorded at the Pierre Auger Observatory
(Institute of Physics - IOPBristol, 2012-04)
Observations of cosmic ray arrival directions made with the Pierre Auger Obser- vatory have previously provided evidence of anisotropy at the 99% CL using the correlation of ultra high energy cosmic rays (UHECRs) with ...