Results 11 to 20 of about 126,463 (267)
The origin of galactic cosmic rays [PDF]
The 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
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The origin of galactic cosmic rays [PDF]
International Journal of Modern Physics D, 2014 Initial discovery of Cosmic Rays (CRs) dates back to a century ago (1912). Their identification as particles rather than radiation dates to about 20 years later and in 20 more years also the first suggestion that they were associated with SNRs was in ...
E. Amato
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Positrons and Antiprotons in Galactic Cosmic Rays
Annual Review of Nuclear and Particle Science, 2016 I consider the impact of recent measurements of positron and antiproton spectra in cosmic rays on our understanding of the origins and propagation of cosmic rays, as well as on the annihilation and decay characteristics of particles of Galactic dark ...
Ramanath Cowsik
exaly +2 more sources
Galactic cosmic rays and nucleosynthesis
AIP Conference Proceedings, 2009 International audienceThe nucleosynthesis of the light elements Li, Be and B by galactic cosmic rays is presented. Observations of cosmic rays and the nuclear reactions responsible for Li, Be and B nucleosynthesis are described, followed by some words on
Kiener, J.
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Red Dwarfs as Sources of Cosmic Rays [PDF]
EPJ Web of Conferences, 2022 The Pamela, Fermi, AMS-02 spectrometer experimental data cannot be explained using the diffusive models of propagation of cosmic-rays accelerated at the supernova shocks and require the existence of nearby sources of cosmic rays at the distances less ...
Sinitsyna Vera Yu. +2 more
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The Origin of Galactic Cosmic Rays as Revealed by their Composition [PDF]
International Conference on Rebooting Computing, 2021 Galactic cosmic-rays (GCRs) are thought to be accelerated in strong shocks induced by massive star winds and supernova explosions sweeping across the interstellar medium.
V. Tatischeff +4 more
semanticscholar +1 more source
On the Search for the Galactic PeVatrons by Means of Gamma-Ray Astronomy
Universe, 2022 Cosmic rays are ultra-relativistic particles that slam into the atmosphere from all directions in the sky. Gamma rays emitted when cosmic rays interact with Galactic gas and radiation fields are a powerful tool to investigate their origin. Many candidate
Sabrina Casanova
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Origin of galactic cosmic rays [PDF]
Physical Review D, 1995 Motivated by recent measurements of the major components of the cosmic radiation around 10 TeV/nucleon and above, we discuss the phenomenology of a model in which there are two distinct kinds of cosmic ray accelerators in the galaxy. A comparison of the spectra of hydrogen and helium up to 100 TeV per nucleon suggests that these two elements do not ...
, Biermann, , Gaisser, , Stanev
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The origin of Galactic cosmic rays: Challenges to the standard paradigm [PDF]
International Journal of Modern Physics D, 2019 A critical review of the standard paradigm for the origin of Galactic cosmic rays (CRs) is presented. Recent measurements of local and far-away CRs reveal unexpected behaviors, which challenge the commonly accepted scenario.
S. Gabici +7 more
semanticscholar +1 more source
Cosmic rays in a galactic breeze [PDF]
Physical Review D, 2017 Motivated by the discovery of the non-thermal Fermi bubble features both below and above the Galactic plane, we investigate a scenario in which these bubbles are formed through Galacto-centric outflow. Cosmic rays (CR) both diffusing and advecting within a Galactic breeze outflow, interacting with the ambient gas present, give rise to gamma-ray ...
Taylor, A., Giacinti, G.
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