Results 41 to 50 of about 4,448,337 (335)

Towards Understanding the Origin of Cosmic-Ray Electrons

open access: yesPhysical Review Letters, 2019
Precision results on cosmic-ray electrons are presented in the energy range from 0.5 GeV to 1.4 TeV based on 28.1×106 electrons collected by the Alpha Magnetic Spectrometer on the International Space Station.
M. Aguilar   +228 more
semanticscholar   +1 more source

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

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

Detection of the temporal variation of the sun's cosmic ray shadow with the IceCube detector [PDF]

open access: yes, 2018
We report on the observation of a deficit in the cosmic ray flux from the directions of the Moon and Sun with five years of data taken by the IceCube Neutrino Observatory.
Aartsen, M. G.   +329 more
core   +5 more sources

An Indication of Anisotropy in Arrival Directions of Ultra-high-energy Cosmic Rays through Comparison to the Flux Pattern of Extragalactic Gamma-Ray Sources [PDF]

open access: yes, 2018
A new analysis of the data set from the Pierre Auger Observatory provides evidence for anisotropy in the arrival directions of ultra-high-energy cosmic rays on an intermediate angular scale, which is indicative of excess arrivals from strong, nearby ...
T. P. A. C. A. Aab   +391 more
semanticscholar   +1 more source

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

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

Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays [PDF]

open access: yes, 2016
The determination of the injection composition of cosmic ray nuclei within astrophysical sources requires sufficiently accurate descriptions of the source physics and the propagation - apart from controlling astrophysical uncertainties.
Boncioli, Denise   +2 more
core   +1 more source

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