Results 121 to 130 of about 4,292,570 (358)

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

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 produce neutral pions that in turn decay into gamma rays.
arxiv   +1 more source

Galactic cosmic ray propagation: sub-PeV diffuse gamma-ray and neutrino emission [PDF]

open access: yesarXiv, 2021
The Tibet ASgamma experiment just reported their measurement of sub-PeV diffuse gamma ray emission from the Galactic disk, with the highest energy up to 957 TeV. These gamma-rays are most likely the hadronic origin by cosmic ray interaction with interstellar gas in the Galaxy.
arxiv  

Wave damping by MHD turbulence and its effect upon cosmic ray propagation in the ISM [PDF]

open access: yesAstrophys.J. 604 (2004) 671-674, 2003
Cosmic rays scatter off magnetic irregularities (Alfven waves) with which they are resonant, that is waves of wavelength comparable to their gyroradii. These waves may be generated either by the cosmic rays themselves, if they stream faster than the Alfven speed, or by sources of MHD turbulence. Waves excited by streaming cosmic rays are ideally shaped
arxiv   +1 more source

Origin of cosmic rays [PDF]

open access: yesAstroparticle Physics, 2012
It is argued that there are three `origins' of cosmic rays; the origin of the particles, the origin of the energy, and the site of the acceleration. The evidence for each origin is discussed and a plausible synthesis outlined for the particles of Galactic origin where the energy comes mainly (but not exclusively) from supernova explosions, the site of ...
openaire   +3 more sources

Anomalous cosmic rays [PDF]

open access: yesAIP Conference Proceedings, 2013
We review the observed properties of anomalous cosmic rays and the present status of our knowledge of the processes by which they originate. We compiled a comprehensive set of ACR energy spectral data from various spacecraft throughout the heliosphere during the passes of Ulysses over the poles of the Sun and present first results of a detailed ...
Cummings, Alan C., Stone, Edward C.
openaire   +4 more sources

Structural Battery Electrolytes Based on a Cross‐Linked Methacrylate Polymer and a Protic Ionic Liquid: Is There an Optimal Composition?

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
Structural batteries emerge as sustainable devices by integrating energy storage into load‐bearing components, thus reducing mass and enhancing fuel efficiency. However, their performance is challenged by the compromise between mechanical strength and ionic conductivity.
Nicole Abdou   +7 more
wiley   +1 more source

Geomagnetic and Cosmic Ray Activity Effect on Heart Rate during the Solar Cycle 24

open access: yesAtmosphere
The number of investigations relevant to the study of geomagnetic activity, solar events, and cosmic rays, i.e., space weather phenomena, and their impact on human health has increased dramatically over the past few years.
Maria-Christina Papailiou   +3 more
doaj   +1 more source

Prediction of galactic cosmic ray intensity variation for a few (up to 10-12) years ahead on the basis of convection-diffusion and drift model [PDF]

open access: yesAnnales Geophysicae, 2005
We determine the dimension of the Heliosphere (modulation region), radial diffusion coefficient and other parameters of convection-diffusion and drift mechanisms of cosmic ray (CR) long-term variation, depending on particle energy, the level of solar
L. I. Dorman, L. I. Dorman
doaj   +1 more source

Radiation Dosimetry Estimations in the Venusian Atmosphere during Different Periods of Solar Activity

open access: yesUniverse, 2022
The new space era has expanded the exploration of other planets of our solar system. In this work, radiation quantities are estimated in the Venusian atmosphere using the software tool DYASTIMA/DYASTIMA-R, such as the energy deposit and the ambient dose ...
Anastasia Tezari   +8 more
doaj   +1 more source

Astrospheres and Cosmic Rays [PDF]

open access: yesJournal of Physics: Conference Series, 2019
Paper for ECRS-2018, to be published.
A. Sadovski, A. Struminsky
openaire   +3 more sources

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