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Wave Mode Occurrence Distribution Around Venus: A VEX Statistical Study
Fraenz, Markus; Echer, Ezequiel; Marques de Souza Franco, Adriane +3 more
In this work, plasma and magnetic field data from Venus Express (VEX) were analyzed through the entire mission span (2006-2014) in order to statistically study wave mode occurrence around Venus considering different solar wind conditions. The wave mode occurrence distribution in terms of solar activity (maxima and minimum periods), solar wind pres…
ULF Waves Propagating Through the Martian Magnetosheath into the Ionosphere: A Statistical Study Using Mars Express Observations
Fraenz, Markus; Echer, Ezequiel; Franco, Adriane Marques de Souza +1 more
The Martian magnetosphere is induced, and the low-energy ion escape is related to the extreme ultraviolet (EUV) solar radiation and to the solar wind pressure variations. The ion reflection at the bow shock is a permanent source of ultra-low frequency (ULF) waves. These are convected through the magnetosheath and can penetrate into the upper ionos…
Cosmic-Ray Modulation: an Ab Initio Approach
Burger, R. A.; Engelbrecht, N. E.
A better understanding of cosmic-ray modulation in the heliosphere can only be gained through a proper understanding of the effects of turbulence on the diffusion and drift of cosmic rays. We present an ab initio model for cosmic-ray modulation, incorporating for the first time the results yielded by a two-component turbulence transport model. Thi…