113 citations · 876 across the 27 of their papers we have counts for
6 papers · 1 filter
Towards Synthetic Magnetic Turbulence with Coherent Structures
Jeremiah Lübke, Frederic Effenberger, Mike Wilbert +2
Synthetic turbulence is a relevant tool to study complex astrophysical and space plasma environments inaccessible by direct simulation. However, conventional models lack intermitte…
A Primer on Focused Solar Energetic Particle Transport: Basic physics and recent modelling results
J. P. van den Berg, R. D. Strauss, F. Effenberger
The basics of focused transport as applied to solar energetic particles are reviewed, paying special attention to areas of common misconception. The micro-physics of charged partic…
The telegraph approximation for focused cosmic-ray transport in the presence of boundaries
Yuri E. Litvinenko, Frederic Effenberger, Reinhard Schlickeiser
Diffusive cosmic-ray transport in nonuniform large-scale magnetic fields in the presence of boundaries is considered. Reflecting and absorbing boundary conditions are derived for a…
The Diffusion Approximation vs. the Telegraph Equation for Modeling Solar Energetic Particle Transport with Adiabatic Focusing. I. Isotropic Pitch-angle Scattering
Frederic Effenberger, Yuri E. Litvinenko
The diffusion approximation to the Fokker-Planck equation is commonly used to model the transport of solar energetic particles in interplanetary space. In this study, we present ex…
Analytical solutions of a fractional diffusion-advection equation for solar cosmic-ray transport
Yuri E. Litvinenko, Frederic Effenberger
Motivated by recent applications of superdiffusive transport models to shock-accelerated particle distributions in the heliosphere, we solve analytically a one-dimensional fraction…
A Generalized Diffusion Tensor for Fully Anisotropic Diffusion of Energetic Particles in the Heliospheric Magnetic Field
Frederic Effenberger, Horst Fichtner, Klaus Scherer +3
The spatial diffusion of cosmic rays in turbulent magnetic fields can, in the most general case, be fully anisotropic, i.e. one has to distinguish three diffusion axes in a local,…