Results 41 to 50 of about 271,848 (328)

Southern Hemisphere Observations of a $10^{18}$eV Cosmic Ray Source Near the Direction of the Galactic Centre [PDF]

open access: yes, 2000
We report on an analysis of data from the southern hemisphere SUGAR cosmic ray detector. We confirm the existence of an excess of $10^{18}$eV cosmic rays from a direction close to the Galactic Centre, first reported by the AGASA group.
B.R. Dawson   +11 more
core   +2 more sources

Cosmic ray astronomy

open access: yesNew Journal of Physics, 2009
27 pages, 3 figures, review to appear in New Journal of Physics [Focus Issue]
Sommers, Paul, Westerhoff, Stefan
openaire   +2 more sources

Multiple production up to √s = 13 TeV with the generator GHOST adapted to cosmic ray simulation

open access: yesEPJ Web of Conferences, 2017
The model HDPM of CORSIKA has been updated and developed on the base of the recent measurements by LHCb, CMS, TOTEM... The new model GHOST involving a 4-source production reproduces correctly the pseudorapidity distributions of charged secondaries and ...
Capdevielle Jean-Noël   +3 more
doaj   +2 more sources

Quality Control of High-Speed Photon Detectors [PDF]

open access: yesEPJ Web of Conferences, 2019
High-speed-photon detectors are some of the most important tools for observations of high energy cosmic rays. As technologies of photon detectors and their read-out electronics improved rapidly, the time resolution of some cosmic ray detectors became ...
Inome Yusuke   +9 more
doaj   +1 more source

Ionization in atmospheres of brown dwarfs and extrasolar planets. IV. The effect of cosmic rays [PDF]

open access: yes, 2013
Cosmic rays provide an important source for free electrons in Earth's atmosphere and also in dense interstellar regions where they produce a prevailing background ionization. We utilize a Monte Carlo cosmic ray transport model for particle energies of 10(
Helling, Christiane, Rimmer, Paul
core   +2 more sources

Status and prospects of the TAx4 experiment [PDF]

open access: yesEPJ Web of Conferences, 2019
The TAx4 experiment is a project to observe highest energy cosmic rays by expanding the detection area of the TA experiment with newly constructed surface detectors (SDs) and fluorescence detectors (FDs).
Kido Eiji
doaj   +1 more source

Theoretical study of ionization profiles of molecular clouds near supernova remnants: Tracing the hadronic origin of GeV gamma radiation

open access: yes, 2014
Context: Since a few years, signatures of supernova remnants associated with molecular clouds have been detected in gamma rays. Whether these gamma rays are generated by cosmic ray electrons or by cosmic ray protons is usually not known. The detection of
Röken, Christian   +2 more
core   +1 more source

Hadronic interaction studied by TA [PDF]

open access: yesEPJ Web of Conferences, 2019
Two studies by the Telescope Array group related to the hadronic interaction observed with Extensive Air Showers are reviewed. (1) Inelastic p-air cross section σp−airinel=567.0±70.5 [stat]−25+29[sys] mb$ \sigma _{p - air}^{inel} = 567.0 \pm 70.5\,[{\rm{
Sako Takashi
doaj   +1 more source

Propagation in 3D spiral-arm cosmic-ray source distribution models and secondary particle production using PICARD

open access: yes, 2015
We study the impact of possible spiral-arm distributions of Galactic cosmic-ray sources on the flux of various cosmic-ray nuclei throughout our Galaxy. We investigate model cosmic-ray spectra at the nominal position of the sun and at different positions ...
Kissmann, Ralf   +3 more
core   +1 more source

Record-setting Cosmic-ray Intensities in 2009 and 2010 [PDF]

open access: yes, 2010
We report measurements of record-setting intensities of cosmic-ray nuclei from C to Fe, made with the Cosmic Ray Isotope Spectrometer carried on the Advanced Composition Explorer in orbit about the inner Sun-Earth Lagrangian point. In the energy interval
Blake, J. B.   +15 more
core   +2 more sources

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