Results 21 to 30 of about 616 (181)
Constraints on the Hosts of UHECR Accelerators
The Astrophysical Journal Letters, 2023 Interactions of ultra-high-energy cosmic rays (UHECRs) in the surroundings of their accelerators can naturally explain the observed spectrum and composition of UHECRs, including the abundance of protons below the ankle.
Marco Stein Muzio, Glennys R. Farrar
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Search for Galactic cosmic ray sources: The multimessenger approach
EPJ Web of Conferences, 2015 The search for the sources of high-energy cosmic rays (CRs) has made significant progress the past decade. By including multimessenger methods, the general picture of the presence of a Galactic component at low energies and an extragalactic one at the ...
Becker Tjus Julia
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Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays
Scientific Reports, 2017 The determination of the injection composition of cosmic ray nuclei within astrophysical sources requires sufficiently accurate descriptions of the source physics and the propagation – apart from controlling astrophysical uncertainties.
Denise Boncioli +2 more
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The Astrophysical Journal, 2023 Multi-messenger anomalies, including spectral hardening or excess of nuclei, leptons, ratios of $\bar{p}/p$ and B/C, and anisotropic reversal, have been observed in past years.
Bing-Qiang Qiao +3 more
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The Upcoming GAMMA-400 Experiment
Universe, 2023 The upcoming GAMMA-400 experiment will be implemented aboard the Russian astrophysical space observatory, which will be operating in a highly elliptical orbit over a period of 7 years to provide new data on gamma-ray emissions and cosmic-ray electron ...
Sergey I. Suchkov +18 more
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Monogem’s Contribution to the Galactic Cosmic-Ray Spectrum
The Astrophysical JournalThe study of local cosmic-ray (CR) sources is crucial for understanding the anomalous features observed in the energy spectra of CR nuclei, as well as the reversal of both the amplitude and phase of CR anisotropy around 100 TeV.
Xiang-Li Qian +5 more
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The Astrophysical Journal, 2023 Some Seyfert galaxies are detected in high-energy gamma rays, but the mechanism and site of gamma-ray emission are unknown. Also, the origins of the cosmic high-energy neutrino and MeV gamma-ray backgrounds have been veiled in mystery since their ...
Hiromichi Tagawa +2 more
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Hard Cosmic X-ray Sources [PDF]
Symposium - International Astronomical Union, 1973 A review of the observational status of X-ray sources detected in the 20 ⋍ 500 keV range is presented. Of the approximately 115 sources listed in the March 1972 edition of the UHURU 2–6 keV sky survey catalog, about 15 sources have been studied in hard X-rays.
openaire +1 more source
Hierarchical Structure and Fabrication of Functionally Graded Biointerfaces in the Mussel Byssus
Advanced Materials Interfaces, EarlyView.The byssus is a fibrous protein‐based holdfast consisting of mechanically distinct interfaces, which mussels use to anchor their soft living tissue to hard seashore surfaces. Here, multiscale methodologies were used to elucidate the compositional and structural features underlying these functionally graded interfaces and how they are fabricated through
Lucia Youssef +4 more
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Amplification of energy of low-energy neutrinos
European Physical Journal C: Particles and FieldsWe investigate the elastic scattering of sufficiently low-energy neutrinos by the ultra-relativistic electrons passing through the single crystal possessing a sufficiently strong internal electrostatic field.
Vali A. Huseynov +9 more
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