Now showing items 1-6 of 6

    • Modeling ground and space based cosmic ray observations 

      Ferreira, Stephanus Esaias Salomon; Potgieter, Marthinus Steenkamp; Strauss, Roelf du Toit (Elsevier, 2012)
      After entering our local astrosphere (called the heliosphere), galactic cosmic rays, as charged particles, are affected by the Sun’s turbulent magnetic field. This causes their intensities to decrease towards the inner ...
    • Modeling the acceleration and modulation of anomalous cosmic ray oxygen 

      Ferreira, Stephanus Esaias Salomon; Potgieter, Marthinus Steenkamp; Strauss, Roelf du Toit (Elsevier, 2011)
    • Modelling of cosmic ray modulation in the heliosphere by stochastic processes 

      Strauss, Roelf du Toit (North-West University, 2013)
      The transport of cosmic rays in the heliosphere is studied by making use of a newly developed modulation model. This model employes stochastic differential equations to numerically solve the relevant transport equation, ...
    • On cosmic ray modulation beyond the heliopause: where is the modulation boundary? 

      Ferreira, Stephanus Esaias Salomon; Potgieter, Marthinus Steenkamp; Scherer, K.; Fichtner, H.; Strauss, Roelf du Toit; Fahr, H.-J. (IOP Publications, 2011)
      Two of the paradigms in modeling the transport of galactic cosmic rays are that the modulation boundary is the heliopause and that the local interstellar spectra are identical to the galactic cosmic ray spectra. Here we ...
    • On the propagation times and energy losses of cosmic rays in the heliosphere 

      Kopp, Andreas; Potgieter, Marthinus Steenkamp; Strauss, Roelf du Toit; Büsching, Ingo (American Geophysical Union, 2011)
      We present calculations of the propagation times and energy losses of cosmic rays as they are transported through the heliosphere. By calculating these quantities for a spatially 1D scenario, we benchmark our numerical ...
    • A stochastic differential equation code for multidimensional Fokker-Planck type problems 

      Kopp, Andreas; Potgieter, Marthinus Steenkamp; Büsching, Ingo; Strauss, Roelf du Toit (Elsevier, 2012)
      We present a newly developed numerical code that integrates Fokker–Planck type transport equations in four to six spatial dimensions (configuration plus momentum space) and time by means of stochastic differential equations. ...