Results 31 to 40 of about 271,848 (328)

Light Element Evolution and Cosmic Ray Energetics [PDF]

open access: yes, 1999
Using cosmic-ray energetics as a discriminator, we investigate evolutionary models of LiBeB. We employ a Monte Carlo code which incorporates the delayed mixing into the ISM both of the synthesized Fe, due to its incorporation into high velocity dust ...
Benzion Kozlovsky   +24 more
core   +2 more sources

Dark cosmic rays

open access: yesPhysics Letters B, 2017
If dark matter particles have an electric charge, as in models of millicharged dark matter, such particles should be accelerated in the same astrophysical accelerators that produce ordinary cosmic rays, and their spectra should have a predictable rigidity dependence. Depending on the charge, the resulting "dark cosmic rays" can be detected as muon-like
Hu, Ping-Kai   +2 more
openaire   +3 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

Cosmic rays and space weather: effects on global climate change [PDF]

open access: yesAnnales Geophysicae, 2012
We consider possible effects of cosmic rays and some other space factors on the Earth's climate change. It is well known that the system of internal and external factors formatting the climate is very unstable; decreasing planetary temperature leads ...
L. I. Dorman, L. I. Dorman
doaj   +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

Radiation Exposure in the Lower Atmosphere during Different Periods of Solar Activity

open access: yesAtmosphere, 2022
In recent years, there has been a huge increase in air travel, both for business and leisure. For this reason, entities such as the European Commission and the International Committee on Radiological Protection have provided several recommendations for ...
Anastasia Tezari   +9 more
doaj   +1 more source

Unparticle effects on cosmic ray photon and $e^\pm$ [PDF]

open access: yes, 2009
We study the effects of unparticle physics on the cosmic ray photon and $e^\pm$, including on the pair production (PP) and elastic scattering (ES) of cosmic ray photon off various background radiations, and on the inverse Compton scattering of cosmic ray
H.E.S.S. collaboration   +6 more
core   +1 more source

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

The Density Spike in Cosmic-Ray-Modified Shocks: Formation, Evolution, and Instability [PDF]

open access: yes, 1996
We examine the formation and evolution of the density enhancement (density spike) that appears downstream of strong, cosmic-ray-modified shocks. This feature results from temporary overcompression of the flow by the combined cosmic-ray shock precursor ...
Axford W. I.   +12 more
core   +3 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

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