Results 71 to 80 of about 4,292,570 (358)
Updates on the Hotspot and the Perseus-Pisces supercluster Excess Observed by the Telescope Array Experiment [PDF]
EPJ Web of Conferences, 2023 The Telescope Array (TA) experiment, the largest observatory studying ultra-high energy cosmic rays in the northern hemisphere, has reported evidence for two medium-scale anisotropies.
Kim Jihyun +4 more
doaj +1 more source
New Journal of Physics, 2009 27 pages, 3 figures, review to appear in New Journal of Physics [Focus Issue]
Paul Sommers, S. Westerhoff
openaire +3 more sources
Cosmic ray antiprotons at high energies [PDF]
, 2017 Cosmic ray antiprotons provide a powerful tool to probe dark matter annihilations in our galaxy. The sensitivity of this important channel is, however, diluted by sizable uncertainties in the secondary antiproton background.
M. Winkler
semanticscholar +1 more source
Journal of Cosmology and Astroparticle Physics, 2019 We study interactions of cosmological relics, $X$, of mass $m$ and electric charge $qe$ in the galaxy, including thermalization with the interstellar medium, diffusion through inhomogeneous magnetic fields and Fermi acceleration by supernova shock waves.
David Dunsky +2 more
openaire +4 more sources
, 2014 Context: Since a few years, signatures of supernova remnants associated with molecular clouds have been detected in gamma rays. Whether these gamma rays are generated by cosmic ray electrons or by cosmic ray protons is usually not known. The detection of
Röken, Christian +2 more
core +1 more source
The Density Spike in Cosmic-Ray-Modified Shocks: Formation, Evolution, and Instability [PDF]
, 1996 We examine the formation and evolution of the density enhancement (density spike) that appears downstream of strong, cosmic-ray-modified shocks. This feature results from temporary overcompression of the flow by the combined cosmic-ray shock precursor ...
Axford W. I. +12 more
core +3 more sources
Simulating cosmic ray physics on a moving mesh [PDF]
, 2016 We discuss new methods to integrate the cosmic ray (CR) evolution equations coupled to magneto-hydrodynamics (MHD) on an unstructured moving mesh, as realised in the massively parallel AREPO code for cosmological simulations.
C. Pfrommer +6 more
semanticscholar +1 more source
Monitoring and forecasting of great radiation hazards for spacecraft and aircrafts by online cosmic ray data [PDF]
Annales Geophysicae, 2005 We show that an exact forecast of great radiation hazard in space, in the magnetosphere, in the atmosphere and on the ground can be made by using high-energy particles (few GeV/nucleon and higher) whose transportation from the Sun is characterized by ...
L. I. Dorman, L. I. Dorman
doaj +1 more source
, 2015 We study the impact of possible spiral-arm distributions of Galactic cosmic-ray sources on the flux of various cosmic-ray nuclei throughout our Galaxy. We investigate model cosmic-ray spectra at the nominal position of the sun and at different positions ...
Kissmann, Ralf +3 more
core +1 more source
Gamma-ray probe of cosmic-ray pressure in galaxy clusters and cosmological implications [PDF]
, 2008 Cosmic rays produced in cluster accretion and merger shocks provide pressure to the intracluster medium (ICM) and affect the mass estimates of galaxy clusters.
Daisuke Nagai +7 more
core +2 more sources