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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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Studying Cosmic Ray Sources Using Intergalactic Electromagnetic Cascades
Universe, 2021 In this paper, intergalactic electromagnetic cascades are used as a probe of cosmic ray sources. This is achieved as follows. In extragalactic space, cosmic rays initiate electromagnetic cascades, in which gamma-ray and neutrino emission arises.
Anna Uryson
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MUON ACCELERATION IN COSMIC-RAY SOURCES [PDF]
The Astrophysical Journal, 2013 Many models of ultra-high energy cosmic-ray production involve acceleration in linear accelerators located in Gamma-Ray Bursts magnetars, or other sources. These source models require very high accelerating gradients, $10^{13}$ keV/cm, with the minimum gradient set by the length of the source.
Klein, Steen +2 more
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Search for ultra high energy cosmic ray sources
EPJ Web of Conferences, 2017 Earlier we suggested a new method to search for sources and anisotropy of the arrival directions of ultra high energy particles. Here using this method we analyzed the data of the Yakutsk EAS array and found that particle fluxes with energies E < 4.1019 ...
Mikhailov A.A., Kolosov V.A.
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A GeV-TeV particle component and the barrier of cosmic-ray sea in the Central Molecular Zone
Nature Communications, 2021 Galactic center is one of the most important cosmic-ray sources. Here, the authors show GeV-TeV cosmic ray density in the central molecular zone is lower than the cosmic ray sea component, suggesting presence of high energy particle accelerator at the ...
Xiaoyuan Huang, Qiang Yuan, Yi-Zhong Fan
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Cosmic ray source abundances and the acceleration of cosmic rays [PDF]
AIP Conference Proceedings, 2000 The galactic cosmic ray elemental source abundances display a fractionation that is possibly based on first ionization potential (FIP) or volatility. A few elements break the general correlation of FIP and volatility and the abundances of these may help to distinguish between models for the origin of the cosmic ray source material. Data from the Cosmic
George, J. S. +13 more
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Gamma-ray pulsar halos in the Galaxy
Frontiers in Astronomy and Space Sciences, 2022 Pulsar halos are extended gamma-ray structures generated by electrons and positrons escaping from pulsar wind nebulae (PWNe), considered a new class of gamma-ray sources.
Kun Fang
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Latest results from the DAMPE space mission [PDF]
EPJ Web of Conferences, 2023 The space-based DAMPE (DArk Matter Particle Explorer) particle detector has been taking data for more than 7 years since its successful launch in December 2015.
Cagnoli Irene +2 more
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Nonextensive thermal sources of cosmic rays [PDF]
Open Physics, 2010 Abstract The energy spectrum of cosmic rays exhibits power-like behavior with a very characteristic ‘knee’ structure. We consider a possibility that such a spectrum could be generated by some specific nonstatistical temperature fluctuations in the source of cosmic rays with the ‘knee’ structure reflecting an abrupt change of the pattern ...
Wilk Grzegorz, Włodarczyk Zbigniew
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Cosmic-ray positrons: are there primary sources? [PDF]
Astroparticle Physics, 1999 Cosmic rays at the Earth include a secondary component originating in collisions of primary particles with the diffuse interstellar gas. The secondary cosmic rays are relatively rare but carry important information on the Galactic propagation of the primary particles.
Coutu, Stephane +17 more
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