Results 51 to 60 of about 186,144 (251)
Diffuse Cosmic Rays Shining in the Galactic Center: A Novel Interpretation of H.E.S.S. and Fermi-LAT γ-Ray Data. [PDF]
Physical Review Letters, 2017 We present a novel interpretation of the γ-ray diffuse emission measured by Fermi-LAT and H.E.S.S. in the Galactic center (GC) region and the Galactic ridge (GR).
D. Gaggero +4 more
semanticscholar +1 more source
GEV-TEV GALACTIC COSMIC RAYS [PDF]
Particle Physics at the Year of Centenary of Bruno Pontecorvo, 2015 This short review aims at presenting the way we currently understand, model, and constrain the transport of cosmic rays in the GeV-TeV energy domain. This is a research field per se, but is also an important tool e.g. to improve our understanding of the cosmic-ray sources, of the diffuse non-thermal Galactic emissions (from radio wavelengths to gamma ...
openaire +2 more sources
Extragalactic and galactic sources: New evidence, new challenges, new opportunities
EPJ Web of Conferences, 2013 Recent data bring in sharper focus the issue of relative contributions of galactic and extragalactic sources of ultrahigh-energy cosmic rays. On the one hand, there is some new evidence, from gamma-ray observations of blazars, that cosmic rays are ...
Kusenko Alexander
doaj +1 more source
Recurrent variations of anomalous oxygen in association with a corotating interaction region [PDF]
Annales Geophysicae, 1996 The fluxes of anomalous oxygen (E ranging from 3.5-6.8 MeV/amu), as measured by the EPAC instrument on ULYSSES, show a recurrent variation with the solar rotation period, which is anticorrelated with the fluxes of particles accelerated at the shocks ...
M. K. Reuss, M. Fränz, E. Keppler
doaj +1 more source
Galactic Cosmic Rays - Theory and Interpretation [PDF]
, 2017 The arguments surrounding the Galactic component of the cosmic rays, the energy budget, questions of composition, spectral features, anisotropy, sources etc, will be critically examined.
Drury, Luke O'C.
core +2 more sources
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.
openaire +4 more sources
Cosmic rays in a galactic breeze [PDF]
Physical Review D, 2017 Motivated by the discovery of the non-thermal Fermi bubble features both below and above the Galactic plane, we investigate a scenario in which these bubbles are formed through Galacto-centric outflow. Cosmic rays (CR) both diffusing and advecting within a Galactic breeze outflow, interacting with the ambient gas present, give rise to gamma-ray ...
Taylor, A., Giacinti, G.
openaire +3 more sources
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
doaj +1 more source
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
doaj +1 more source
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 ...
openaire +1 more source