82 citations · 1.3k across the 57 of their papers we have counts for
9 papers · 1 filter
Relativistic regularized kappa distributions
Linh Han Than, Klaus Scherer, Horst Fichtner
The special relativistic generalization of isotropic regularized kappa distributions is derived and compared to that of the original Olbertian (or standard) kappa distributions. It…
Implications from 3D modeling of gamma-ray signatures in the Galactic Center Region
J. Becker Tjus, P. -S. Blomenkamp, J. Dörner +4
Context. The Galactic Center (GC) region has been studied in gamma rays in the past decades - the GC excess detected by Fermi is still not fully understood and the first detection…
Implications of turbulence-dependent diffusion on cosmic-ray spectra
J. Dörner, P. Reichherzer, L. Merten +4
The propagation of cosmic rays can be described as a diffusive motion in most galactic environments. High-energy gamma-rays measured by Fermi have allowed inference of a gradient i…
Cosmic-ray propagation around the Sun: investigating the influence of the solar magnetic field on the cosmic-ray Sun shadow
Julia Becker Tjus, Paolo Desiati, Niklas Döpper +4
The cosmic-ray Sun shadow, which is caused by high-energy charged cosmic rays being blocked and deflected by the Sun and its magnetic field, has been observed by various experiment…
Comic ray flux anisotropies caused by astrospheres
K. Scherer, R. D. Strauss, S. E. S. Ferreira +1
Huge astrospheres or stellar wind bubbles influence the propagation of cosmic rays at energies up to the TeV range and can act as small-scale sinks decreasing the cosmic ray flux.…
Cosmic rays in astrospheres
Klaus Scherer, Ausgusts van der Schyff, Dominik Bomans +7
Cosmic rays passing through large astrospheres can be efficiently cooled inside these "cavities" in the interstellar medium. Moreover, the energy spectra of these energetic particl…
Pitch-angle scattering in magnetostatic turbulence. I. Test-particle simulations and the validity of analytical results
R. C. Tautz, A. Dosch, F. Effenberger +2
Context. Spacecraft observations have motivated the need for a refined description of the phase-space distribution function. Of particular importance is the pitch-angle diffusion c…
Simultaneous Analysis of Recurrent Jovian Electron Increases and Galactic Cosmic Ray Decreases
P. Kühl, N. Dresing, P. Dunzlaff +10
The transport environment for particles in the heliosphere, e.g. galactic cosmic rays (GCRs) and MeV electrons (including those originating from Jupiters magnetosphere), is defined…
Anisotropic diffusion of galactic cosmic ray protons and their steady-state azimuthal distribution
Frederic Effenberger, Horst Fichtner, Klaus Scherer +1
Galactic transport models for cosmic rays involve the diffusive motion of these particles in the interstellar medium. Due to the large-scale structured galactic magnetic field this…