78 citations · 396 across the 21 of their papers we have counts for
9 papers · 1 filter
Cosmic ray transport near the Sun
R. D. Strauss, J. P. van den Berg, J. S. Rankin
The strongly diverging magnetic field lines in the very inner heliosphere, through the associated magnetic focusing/mirroring forces, can, potentially, lead to highly anisotropic g…
The updated SANAE neutron monitor
R. D. Strauss, C. van der Merwe, C. Diedericks +5
Neutron monitors have been the premier ground-based instruments for monitoring the near-Earth cosmic ray flux for more than 70 years. It is essential to continue with such measurem…
On the residence-time of Jovian electrons in the inner heliosphere
A. Vogt, N. E. Engelbrecht, R. D. Strauss +3
Jovian electrons serve as an important test-particle distribution in the inner heliosphere and have been used extensively in the past to study the (diffusive) transport of cosmic r…
Acceleration of solar wind particles by traveling interplanetary shocks
P. L. Prinsloo, R. D. Strauss, J. A. le Roux
The acceleration of thermal solar wind protons at spherical interplanetary shocks driven by coronal mass ejections is investigated. The solar wind velocity distribution is represen…
Solar energetic particle propagation in wave turbulence and the possibility of wave generation
R. D. Strauss, J. A. le Roux
A complete theory for the complex interaction between solar energetic particles and the turbulent interplanetary magnetic field remains elusive. In this work we aim to contribute t…
Acceleration of galactic electrons at the solar wind termination shock and Voyager 1 observations
M. S. Potgieter, P. L. Prinsloo, R. D. Strauss
Diffusive shock acceleration (DSA), as an acceleration process for Galactic electrons at the solar wind termination shock (TS), is investigated with a comprehensive numerical model…
On the Pulse Shape of Ground Level Enhancements
R. D. Strauss, O. Ogunjobi, H. Moraal +2
We study the temporal intensity profile, or pulse shape, of cosmic ray ground level enhancements (GLEs) by calculating the rise and decay times fo…
The effect of magnetic field modifications on the modulation of cosmic rays in the heliosphere
J. L. Raath, M. S. Potgieter, R. D. Strauss +1
A numerical model for the solar modulation of cosmic rays, based on the solution of a set of stochastic differential equations, is used to illustrate the effects of modifying the h…
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,…