Browsing Faculty of Natural and Agricultural Sciences by Author "117578ed-892e-416d-bd34-0bc41fa4a7c5"
Now showing items 1-4 of 4
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A comparison of turbulence-reduced drift coefficients of importance for the modulation of galactic cosmic-ray protons in the supersonic solar wind
Engelbrecht, N.E.; Burger, R.A. (Elsevier, 2015)The study of the modulation of cosmic rays in the heliosphere relies heavily on a thorough understanding of the transport of these charged particles in the turbulent solar wind. Drift effects due to gradients and the ... -
Sensitivity of cosmic-ray proton spectra to the low-wavenumber behavior of the 2D turbulence power spectrum
Engelbrecht, N.E.; Burger, R.A. (IOP Publishing, 2015)In this study, a novel ab initio cosmic ray (CR) modulation code that solves a set of stochastic transport equations equivalent to the Parker transport equation, and that uses output from a turbulence transport code as ... -
A simplified ab initio cosmic-ray modulation model with simulated time dependence and predictive capability
Moloto, K.D.; Engelbrecht, N.E.; Burger, R.A. (IOP Publishing, 2018)A simplified ab initio approach is followed to model cosmic-ray proton modulation, using a steady-state three-dimensional stochastic solver of the Parker transport equation that simulates some effects of time dependence. ... -
Toward a greater understanding of the reduction of drift coefficients in the presence of turbulence
Engelbrecht, N.E.; Strauss, R.D.; Burger, R.A.; Le Roux, J.A. (IOP Publishing, 2017)Drift effects play a significant role in the transport of charged particles in the heliosphere. A turbulent magnetic field is also known to reduce the effects of particle drifts. The exact nature of this reduction, however, ...