Results 31 to 40 of about 3,781,710 (350)

Cosmic ray penetration in diffuse clouds [PDF]

open access: yes, 2015
Cosmic rays are a fundamental source of ionization for molecular and diffuse clouds, influencing their chemical, thermal, and dynamical evolution.
Gabici, S., Morlino, G.
core   +4 more sources

SUPERDIFFUSION OF COSMIC RAYS: IMPLICATIONS FOR COSMIC RAY ACCELERATION [PDF]

open access: yesThe Astrophysical Journal, 2014
18 pages, 6 figures, erratum in eqs.(12,13) and table 1 included, ApJ ...
Lazarian, A., Yan, Huirong
openaire   +2 more sources

Evidence for a Time Lag in Solar Modulation of Galactic Cosmic Rays [PDF]

open access: yes, 2017
The solar modulation effect of cosmic rays in the heliosphere is an energy-, time-, and particle-dependent phenomenon that arises from a combination of basic particle transport processes such as diffusion, convection, adiabatic cooling, and drift motion.
N. Tomassetti   +3 more
semanticscholar   +1 more source

COSMIC RAY ANTIPROTONS [PDF]

open access: yesParticles, Strings and Cosmology (PASCOS 99), 2000
Cosmic ray antiprotons have been detected for over 20 years and are now measured reliably. Standard particle and astrophysics predict a conventional spectrum and abundance of secondary antiprotons consistent with all current measurements. These measurements place limits on exotic Galactic antiproton sources and non-standard antiproton properties ...
openaire   +2 more sources

Observation of New Properties of Secondary Cosmic Rays Lithium, Beryllium, and Boron by the Alpha Magnetic Spectrometer on the International Space Station.

open access: yesPhysical Review Letters, 2018
We report on the observation of new properties of secondary cosmic rays Li, Be, and B measured in the rigidity (momentum per unit charge) range 1.9 GV to 3.3 TV with a total of 5.4×10^{6} nuclei collected by AMS during the first five years of operation ...
M. Aguilar   +253 more
semanticscholar   +1 more source

A large light-mass component of cosmic rays at 1017–1017.5 electronvolts from radio observations [PDF]

open access: yesNature, 2016
Cosmic rays are the highest-energy particles found in nature. Measurements of the mass composition of cosmic rays with energies of 1017–1018 electronvolts are essential to understanding whether they have galactic or extragalactic sources.
S. Buitink   +179 more
semanticscholar   +1 more source

The Dipole Anisotropy of Galactic Cosmic Rays [PDF]

open access: yes, 2018
The arrival directions of Galactic cosmic rays exhibit anisotropies up to the level of one per-mille over various angular scales. Recent observations of TeV-PeV cosmic rays show that the dipole anisotropy has a strong energy dependence with a phase-flip ...
Ahlers, Markus
core   +2 more sources

The origin of galactic cosmic rays [PDF]

open access: yes, 2007
The origin of galactic cosmic rays is one of the most interesting unsolved problems in astroparticle physics. Experimentally, the problem is attacked by a multi-disciplinary effort, namely by direct measurements of cosmic rays above the atmosphere, by ...
Aharonian   +54 more
core   +3 more sources

Cosmic ray models

open access: yesProgress in Particle and Nuclear Physics, 2019
89 pages, 56 figures; v2: minor additions, version to ...
Kachelriess, M., Semikoz, D.V.
openaire   +5 more sources

Exploring the Interaction of Cosmic Rays with Water by Using an Old-Style Detector and Rossi’s Method

open access: yesParticles, 2023
Cosmic ray air showers are a phenomenon that can be observed on Earth when high-energy particles from outer space collide with the Earth’s atmosphere. These energetic particles in space are called primary cosmic rays and consist mainly of protons (about ...
Marco Arcani   +2 more
doaj   +1 more source

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