Results 21 to 30 of about 86,500 (230)

The anisotropy of the ultra-high energy cosmic rays [PDF]

open access: yesAstroparticle Physics, 2002
38 pages, 8 figures.
Evans, W, Ferrer, F, Sarkar, S
openaire   +4 more sources

Detection of ultra-high energy cosmic ray air showers by Cosmic Ray Air Fluorescence Fresnel lens Telescope for next generation [PDF]

open access: yesEPJ Web of Conferences, 2019
In the future, ultra-high energy cosmic ray (UHECR) observatory will be expanded due to the small flux. Then, cost reduction is useful strategy to realize a huge scale observatory.
Tameda Yuichiro   +7 more
doaj   +1 more source

On ultra-high energy cosmic rays [PDF]

open access: yesProceedings of Neutrino Oscillation Workshop — PoS(NOW2018), 2019
This paper summarizes some results on our understanding of the origin of ultra-high energy cosmic rays.
openaire   +1 more source

Measurements of very-forward energy with the CASTOR calorimeter of CMS [PDF]

open access: yesEPJ Web of Conferences, 2019
The very-forward energy production in hadron collisions is of paramount importance for the understanding of ultra-high energy cosmic ray air showers. The CASTOR calorimeter of CMS is located at -6:6 < η < -5:2 in the phase-space where the peak of energy ...
Baur Sebastian
doaj   +1 more source

ULTRA–HIGH-ENERGY COSMIC RAYS [PDF]

open access: yesLepton and Photon Interactions at High Energies, 2006
One of the most striking astrophysical phenomena today is the existence of cosmic ray particles with energies in excess of 1020 eV. While their presence has been confirmed by a number of experiments, it is not clear where and how these particles are accelerated to these energies and how they travel astronomical distances without substantial energy ...
openaire   +3 more sources

Overview on direct and indirect measurements of cosmic rays - Some thoughts on galactic cosmic rays and the knee [PDF]

open access: yesInt.J.Mod.Phys. A20 (2005) 6753-6764, 2005
An overview is given on results from direct and indirect measurements of galactic cosmic rays. Their implications on the contemporary understanding of the origin of cosmic rays and the knee in their energy spectrum are discussed.
arxiv   +1 more source

Ultra-High Energy Cosmic Rays [PDF]

open access: yesarXiv: High Energy Astrophysical Phenomena, 2016
22 pages, contribution to the 2013 CERN - Latin-American School of High-Energy Physics, Arequipa, Peru, 6-19 Mar ...
openaire   +3 more sources

Cosmic ray contribution in extragalactic background gamma-ray emission at an energy of 0.1 TeV

open access: yesEPJ Web of Conferences, 2017
We estimate the intensity of gamma-quanta at the energy 0.1 TeV that is generated in extragalactic space in interactions of ultra-high energy cosmic rays with the cosmic background emission.
Uryson Anna
doaj   +2 more sources

Determination of Zenith Angle Dependence of Incoherent Cosmic Ray Muon Flux Using Smartphones of the CREDO Project

open access: yesApplied Sciences, 2021
The Cosmic-Ray Extremely Distributed Observatory (CREDO) was established to detect and study ultra high-energy cosmic ray particles. In addition to making use of traditional methods for finding rare and extended cosmic ray events such as professional ...
Michał Karbowiak   +8 more
doaj   +1 more source

Ultra-high energy cosmic rays

open access: yesPhysics of the Dark Universe, 2014
AbstractExperimental efforts to reveal the nature and origin of cosmic rays with energy above 1018  eV led to several important steps forward in recent years. The existence of a suppression of the flux above 4×1019  eV has been confirmed. It occurs at the energy threshold for pion-production in proton collisions with the cosmic microwave background, as
openaire   +4 more sources

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