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Galactic cosmic rays [PDF]

open access: yesEPJ Web of Conferences, 2015
The multi-facet nature of the origin of cosmic rays is such that some of the problems currently met in our path to describing available data are due to oversimplified models of CR acceleration and transport, and others to lack of knowledge of the ...
Blasi Pasquale
doaj   +4 more sources

Galactic Cosmic Rays Throughout the Heliosphere and in the Very Local Interstellar Medium. [PDF]

open access: yesSpace Sci Rev, 2022
We review recent observations and modeling developments on the subject of galactic cosmic rays through the heliosphere and in the Very Local Interstellar Medium, emphasizing knowledge that has accumulated over the past decade.
Rankin JS   +9 more
europepmc   +2 more sources

Diffuse Emission of Galactic High-energy Neutrinos from a Global Fit of Cosmic Rays [PDF]

open access: yesThe Astrophysical Journal, 2023
In the standard picture of Galactic cosmic rays, a diffuse flux of high-energy gamma rays and neutrinos is produced from inelastic collisions of cosmic-ray nuclei with the interstellar gas.
Georg Schwefer   +2 more
doaj   +2 more sources

Central Nervous System Responses to Simulated Galactic Cosmic Rays. [PDF]

open access: yesInt J Mol Sci, 2018
In preparation for lunar and Mars missions it is essential to consider the challenges to human health that are posed by long-duration deep space habitation via multiple stressors, including ionizing radiation, gravitational changes during flight and in ...
Cekanaviciute E, Rosi S, Costes SV.
europepmc   +2 more sources

First Detection of sub-PeV Diffuse Gamma Rays from the Galactic Disk: Evidence for Ubiquitous Galactic Cosmic Rays beyond PeV Energies. [PDF]

open access: yesPhysical Review Letters, 2021
We report, for the first time, the long-awaited detection of diffuse gamma rays with energies between 100 TeV and 1 PeV in the Galactic disk. Particularly, all gamma rays above 398 TeV are observed apart from known TeV gamma-ray sources and compatible ...
M. Amenomori   +94 more
semanticscholar   +3 more sources

Understanding the spectral hardenings and radial distribution of Galactic cosmic rays and Fermi diffuse gamma-rays with spatially-dependent propagation [PDF]

open access: yes, 2018
Recent direct measurements of Galactic cosmic ray spectra by balloon/space-borne detectors reveal spectral hardenings of all major nucleus species at rigidities of a few hundred GV. The all-sky diffuse gamma-ray emissions measured by the Fermi Large Area
Guo, Yi-Qing, Yuan, Qiang
core   +2 more sources

Cooler and smoother – the impact of cosmic rays on the phase structure of galactic outflows [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2018
We investigate the impact of cosmic rays (CRs) on galactic outflows from a multi-phase interstellar medium with solar neighbourhood conditions. The three-dimensional magneto-hydrodynamical simulations include CRs as a relativistic fluid in the advection ...
P. Girichidis   +3 more
semanticscholar   +3 more sources

Galactic cosmic rays on extrasolar Earth-like planets: II. Atmospheric implications [PDF]

open access: yes, 2016
(abridged abstract) Theoretical arguments indicate that close-in terrestial exoplanets may have weak magnetic fields. As described in the companion article (Paper I), a weak magnetic field results in a high flux of galactic cosmic rays to the top of the ...
Atri, D.   +4 more
core   +3 more sources

The origin of galactic cosmic rays [PDF]

open access: yesThe Astronomy and Astrophysics Review, 2013
One century ago Viktor Hess carried out several balloon flights that led him to conclude that the penetrating radiation responsible for the discharge of electroscopes was of extraterrestrial origin. One century from the discovery of this phenomenon seems
P. Blasi
semanticscholar   +4 more sources

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