Results 41 to 50 of about 3,608,924 (307)

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

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

A theory of cosmic rays [PDF]

open access: yesPhysics Reports, 2008
Updated to discuss recent data, mainly from ...
A. De Rújula, A. De Rújula, Arnon Dar
openaire   +3 more sources

Constraining the $\bar{p}/p$ Ratio in TeV Cosmic Rays with Observations of the Moon Shadow by HAWC [PDF]

open access: yes, 2018
An indirect measurement of the antiproton flux in cosmic rays is possible as the particles undergo deflection by the geomagnetic field. This effect can be measured by studying the deficit in the flux, or shadow, created by the Moon as it absorbs cosmic ...
Abeysekara, A. U.   +100 more
core   +3 more sources

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

Note on the nature of cosmic rays [PDF]

open access: yes, 1930
The recent experiments of Bothe and Kolhoerster(1) have led to an important and interesting conclusion. The ionization phenomena, by means of which cosmic rays are measured, are produced by highly penetrating corpuscular rays.
Epstein, Paul S.
core   +1 more source

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

The origin of cosmic rays [PDF]

open access: yesSpace Science Reviews, 1995
Lecture at the meeting Trends in Astroparticle Physics, Stockholm September 1994, 8 pages ...
openaire   +4 more sources

ARE THERE STRANGELETS IN COSMIC RAYS? [PDF]

open access: yesInternational Journal of Modern Physics A, 2005
Assuming that cosmic rays entering the Earth's atmosphere contain a small admixture of nuggets of strange quark matter in form of strangelets one can explain a number of apparently "strange" effects observed in different cosmic rays experiments.
Z. Włodarczyk, G. Wilk, M. Rybczyński
openaire   +3 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

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