Results 31 to 40 of about 126,463 (267)
Cosmic Ray Processes in Galactic Ecosystems
Galaxies, 2023 Galaxy evolution is an important topic, and our physical understanding must be complete to establish a correct picture. This includes a thorough treatment of feedback. The effects of thermal–mechanical and radiative feedback have been widely considered; however, cosmic rays (CRs) are also powerful energy carriers in galactic ecosystems.
Ellis R. Owen +4 more
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New look on the origin of cosmic rays
EPJ Web of Conferences, 2017 From the analysis of the flux of high energy particles, E > 3 · 1018 eV, it is shown that the distribution of the power density of extragalactic rays over energy is of the power law, q̅(E) ∝ E−2.7, with the same index of 2.7 that has the distribution of ...
Istomin Ya.N.
doaj +2 more sources
Modulation of Galactic Cosmic Rays in the Inner Heliosphere over Solar Cycles [PDF]
, 2017 The 11- and 22-year modulation of galactic cosmic rays (GCRs) in the inner heliosphere is studied using a numerical model developed by Qin and Shen in 2017.
Z.-N. Shen, G. Qin
semanticscholar +1 more source
The Acceleration of Galactic Cosmic Rays [PDF]
Symposium - International Astronomical Union, 1981 Although it is clear that cosmic rays are of considerable astrophysical significance we know surprisingly little about their origin(s), their mode(s) of propagation and escape from the galaxy, and even of their general properties. Practically nothing is known of the composition and energy spectra of different species at energies below about 200 MeV ...
openaire +3 more sources
Modulation of Galactic Cosmic Rays in the Inner Heliosphere, Comparing with PAMELA Measurements [PDF]
, 2017 We develop a numerical model to study the time-dependent modulation of galactic cosmic rays in the inner heliosphere. In the model, a time-delayed modified Parker heliospheric magnetic field (HMF) and a new diffusion coefficient model, NLGCE-F, from Qin &
G. Qin, Zhenning Shen
semanticscholar +1 more source
The GRAND project and GRANDProto300 experiment [PDF]
EPJ Web of Conferences, 2019 The Giant Array for Neutrino Detection (GRAND) is a proposal for a giant observatory of ultra-high energy cosmic particles (neutrinos, cosmic rays and gamma rays). It will be composed of twenty subarrays of 10 000 antennas each, totaling a detection area
Martineau-Huynh Olivier
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On irregularities in the cosmic ray spectrum of \(10^{16}-10^{18}\) eV range
SciPost Physics Proceedings, 2023 Existing small, medium and large arrays for the study of cosmic rays of ultra-high energies are aimed for obtaining information about our galaxy and extragalactic space, namely to search and study astronomical objects that produce the flux of ...
Stanislav P. Knurenko, Igor S. Petrov
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Galactic diffuse gamma rays meet the PeV frontier [PDF]
Astronomy & Astrophysics, 2022 The Tibet AS$\gamma$ and LHAASO collaborations recently reported the observation of a $\gamma$-ray diffuse emission with energy up to the PeV from the Galactic plane.
P. D. Luque +6 more
semanticscholar +1 more source
Origin of TeV Galactic cosmic rays [PDF]
Physical Review D, 2012 We consider a possibility of identification of sources of cosmic rays (CR) of the energy above 1 TeV via observation of degree-scale extended gamma-ray emission which traces the locations of recent sources in the Galaxy. Such emission in the energy band above 100 GeV is produced by CR nuclei and electrons released by the sources and spreading into the ...
Neronov, A., Semikoz, D.V.
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Evidence for a Time Lag in Solar Modulation of Galactic Cosmic Rays [PDF]
, 2017 The solar modulation effect of cosmic rays in the heliosphere is an energy-, time-, and particle-dependent phenomenon that arises from a combination of basic particle transport processes such as diffusion, convection, adiabatic cooling, and drift motion.
N. Tomassetti +3 more
semanticscholar +1 more source