29 July 2015 to 6 August 2015
World Forum
Europe/Amsterdam timezone

The total solar modulation of low energy electrons in the heliosphere

4 Aug 2015, 14:00
15m
Mississippi (World Forum)

Mississippi

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Oral contribution SH-TH Parallel SH 07 Modulation I

Speaker

Rendani Nndanganeni (North-West University (Potchefstroom campus) South Africa)

Description

Modeling and the subsequent understanding of the processes responsible for the solar modulation of Jovian and galactic electrons require that a source function for Jovian electrons and a heliopause spectrum (HPS) for galactic electron as an input spectrum be specified at the heliopause (assumed to be the solar modulation boundary). Using a comprehensive three-dimensional numerical model based on solving Parker’s transport equation, both a new Jovian source function and HPS are used to compute the total modulation of electrons over an energy range from 1 MeV to 50 GeV. The modulation of low energy electrons is a particular handy tool to construct a suitable diffusion tensor to assure compatibility between model computations and observations from different spacecraft and balloon flights relevant to electrons in the heliosphere. Energy spectra and radial intensity profiles of galactic and Jovian electrons are compared to previous and recent observations. Studying the radial profile of 12 MeV electrons enables us to compute the differential intensity of galactic electrons at this energy at the Earth.
Collaboration -- not specified --
Registration number following "ICRC2015-I/" 112

Primary author

Rendani Nndanganeni (North-West University (Potchefstroom campus) South Africa)

Co-authors

Prof. Marius Potgieter (North-West University) Prof. William Webber (New Mexico State University)

Presentation Materials

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