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6 papers · 2 filters
Confirmation of strong magnetic field amplification and nuclear cosmic ray acceleration in SN 1006
E. G. Berezhko, L. T. Ksenofontov, H. J. Voelk
It is shown that the nonlinear kinetic model of cosmic ray (CR) acceleration in supernova remnants (SNRs) fits the shell-type nonthermal X-ray morphology, obtained in Chandra obser…
The "sigma" problem of the Crab pulsar wind
J. G. Kirk, O. Skjaeraasen
The conversion of the Crab pulsar wind from one dominated by Poynting flux close to the star to one dominated by particle-born energy at the termination shock is considered. The id…
Cosmic ray production in supernova remnants including reacceleration: the secondary to primary ratio
E. G. Berezhko, L. T. Ksenofontov, V. S. Ptuskin +2
We study the production of cosmic rays (CRs) in supernova remnants (SNRs), including the reacceleration of background galactic cosmic rays (GCRs) - thus refining the early consider…
Variation of cosmic ray injection across supernova shocks
H. J. Voelk, E. G. Berezhko, L. T. Ksenofontov
The injection rate of suprathermal protons into the diffusive shock acceleration process should vary strongly over the surface of supernova remnant shocks. These variations and the…
Impact-Generated Dust Clouds Surrounding the Galilean Moons
Harald~Krüger, Alexander V. Krivov, Miodrag Sremčević +1
Tenuous dust clouds of Jupiter's Galilean moons Io, Europa, Ganymede and Callisto have been detected with the in-situ dust detector on board the Galileo spacecraft. The majority of…
Energetic Particles in Clusters of Galaxies and Starburst Galaxies
H. J. Voelk
The nonthermal characteristics of starburst galaxies and galaxy clusters are reviewed and the perspectives for their observation in high energy gamma rays discussed. It is argued t…