Results 41 to 50 of about 3,781,710 (350)

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

Protostars: Forges of cosmic rays? [PDF]

open access: yes, 2016
Galactic cosmic rays (CR) are particles presumably accelerated in supernova remnant shocks that propagate in the interstellar medium up to the densest parts of molecular clouds, losing energy and their ionisation efficiency because of the presence of ...
M. Padovani   +15 more
semanticscholar   +1 more source

Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station. [PDF]

open access: yesPhysical Review Letters, 2014
A precise measurement of the proton flux in primary cosmic rays with rigidity (momentum/charge) from 1 GV to 1.8 TV is presented based on 300 million events. Knowledge of the rigidity dependence of the proton flux is important in understanding the origin,
M. Aguilar   +295 more
semanticscholar   +1 more source

Antiproton Flux, Antiproton-to-Proton Flux Ratio, and Properties of Elementary Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station.

open access: yesPhysical Review Letters, 2016
A precision measurement by AMS of the antiproton flux and the antiproton-to-proton flux ratio in primary cosmic rays in the absolute rigidity range from 1 to 450 GV is presented based on 3.49×10^{5} antiproton events and 2.42×10^{9} proton events.
M. Aguilar   +268 more
semanticscholar   +1 more source

Connecting blazars with ultrahigh-energy cosmic rays and astrophysical neutrinos [PDF]

open access: yes, 2016
We present a strong hint of a connection between high energy $\gamma$-ray emitting blazars, very high energy neutrinos, and ultra high energy cosmic rays.
E. Resconi   +4 more
semanticscholar   +1 more source

Galactic cosmic rays

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   +1 more source

How to use molecular clouds to study the propagation of cosmic rays in the Galaxy

open access: yes, 2010
Observations of molecular clouds in the gamma ray domain provide us with a tool to study the distribution of cosmic rays in the Galaxy. This is because cosmic rays can penetrate molecular clouds, undergo hadronic interactions in the dense gas, and ...
Gabici, Stefano
core   +3 more sources

Theoretical approaches to particle propagation and acceleration in turbulent intergalactic medium [PDF]

open access: yes, 2006
Intercluster medium is expected to be turbulent with turbulence being superAlfvenic at large scales. Magnetic fields substantially modify the turbulent cascade when the turbulence reaches the scales at which the fluctuation velocity gets less than the ...
Lazarian, A.
core   +3 more sources

New generation Cherenkov telescope array: HADAR and its performance introduction

open access: yesNuclear Physics B
Astrophysical very high energy (VHE) gamma-rays are believed to result almost exclusively from the interactions of populations of highly relativistic particles with ambient matter or photon fields.
Qingyuan Hou   +18 more
doaj   +1 more source

One century of cosmic rays – A particle physicist's view

open access: yesEPJ Web of Conferences, 2015
Experiments on cosmic rays and the elementary particles share a common history that dates back to the 19th century. Following the discovery of radioactivity in the 1890s, the paths of the two fields intertwined, especially during the decades after the ...
Sutton Christine
doaj   +1 more source

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