Results 31 to 40 of about 69,000 (198)
GALACTIC AND EXTRAGALACTIC SUPERNOVA REMNANTS AS SITES OF PARTICLE ACCELERATION
Acta Polytechnica, 2013 Supernova remnants, owing to their strong shock waves, are likely sources of Galactic cosmic rays. Studies of supernova remnants in X-rays and gamma rays provide us with new insights into the acceleration of particles to high energies. This paper reviews
Manami Sasaki
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Galactic Cosmic Rays Anomalies [PDF]
Proceedings of Neutrino Oscillation Workshop — PoS(NOW2018), 2019 Current measurements of galactic cosmic rays have reached an impressive precision for many species, and extend on wide energy ranges. Some species such as the high energy positron spectrum, the light primary and secondary nuclei and, possibly, the high energy part of the antiproton spectrum, are not straightforwardly explained by current models ...
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Measurement of Cosmic-ray Energy Spectrum with the TALE Detector in Hybrid Mode [PDF]
EPJ Web of Conferences, 2023 The TA Low-energy Extension (TALE) experiment extends the energy range observed by the TA experiment to below 1016 eV. We aim to study the transition from galactic to extragalactic cosmic rays.
Oshima Hitoshi +3 more
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Assessment of galactic cosmic ray models [PDF]
Journal of Geophysical Research: Space Physics, 2012 Among several factors involved in the development of a manned space mission concept, the astronauts' health is a major concern that needs to be considered carefully. Galactic cosmic rays (GCRs), which mainly consist of high‐energetic nuclei ranging from hydrogen to iron and beyond, pose a major radiation health risk in long‐term space missions.
Mrigakshi, Alankrita Isha +4 more
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Cosmic ray driven Galactic winds [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 The escape of cosmic rays from the Galaxy leads to a gradient in the cosmic ray pressure that acts as a force on the background plasma, in the direction opposite to the gravitational pull. If this force is large enough to win against gravity, a wind can be launched that removes gas from the Galaxy, thereby regulating several physical processes ...
Recchia, S. +2 more
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EPJ Web of Conferences, 2013 We discuss the basic features of the propagation of Ultra High Energy Cosmic Rays in astrophysical backgrounds, comparing two alternative computation schemes to compute the expected fluxes.
Aloisio Roberto
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Possible Counterpart Signal of the Fermi Bubbles at the Cosmic-Ray Positrons
The Astrophysical Journal, 2023 The inner Galaxy has hosted cosmic-ray burst events, including those responsible for the gamma-ray Fermi bubbles and the eROSITA bubbles in X-rays. In this work, we study the Alpha Magnetic Spectrometer positron fraction and find three features around 12,
Ilias Cholis, Iason Krommydas
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Journal of Physics: Conference Series, 2006 In this brief review we describe the theory of the origin of Galactic cosmic rays. The concept that interaction near the source is the dominant source of ?-rays, and spallation secondaries seems best suited to explain the EGRET ?-spectrum of the inner Galaxy, the abundances of light elements, the anti-protons and the positrons.
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Cosmic-Ray Boosted Diffuse Supernova Neutrinos
AstronomyThe subject of boosted fluxes of dark matter or cosmic relic neutrinos via scattering on cosmic rays has received considerable attention recently. This article investigates the boosted neutrino flux from the scattering of cosmic rays and the so-far ...
Alexander Sandrock
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The mass composition of cosmic rays measured with LOFAR
EPJ Web of Conferences, 2017 High-energy cosmic rays, impinging on the atmosphere of the Earth initiate cascades of secondary particles, the extensive air showers. The electrons and positrons in the air shower emit electromagnetic radiation.
Hörandel Jörg R. +15 more
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