Jena 2013 – scientific programme
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EP: Fachverband Extraterrestrische Physik
EP 11: Sonne und Heliosphäre III
EP 11.5: Talk
Friday, March 1, 2013, 12:30–12:45, HS 9
Spectrum of galactic and jovian electrons — •Patrick Kühl1, Nina Dresing1, Phillip Dunzlaff1, Horst Fichtner2, Jan Gieseler1, Raul Gomez-Herrero3,1, Bernd Heber1, Andreas Klassen1, Jens Kleimann2, Andreas Kopp1, Marius Potgieter4, Klaus Scherer2, and Du Toit Strauss4 — 1IEAP, Christian-Albrechts-Universität Kiel — 2Theoretische Physik IV, Ruhr-Universität Bochum — 3Universidad de Alcala, Alcala de Henares, Spain — 4Unit for Space Physics, North-West University, Potchefstroom, South Africa
The electron intensities in the energy range from a few hundred keV to a few tenth of MeV in the inner heliosphere is determined by the intensitiy of Jovian and galactic cosmic ray electrons, with sporadic intensity increases of solar origin. In contrast to galactic cosmic rays Jovian electrons are emitted from a point source. Thus the magnetic connection of the Planet to the observer close to Earth as well as parallel and perpendicular diffusion on the propagation of these electrons is of major importance to understand the measured intensity variations. Here we discuss these variation by analysing the electron intensity near Earth as a function of the Earth's position with respect to Jupiter. I.e. Electron spectra for time series, in which jovian electrons can reach the Earth by perpendicular diffusion only and mainly by parallel diffusion are presented. By comparing these different spectra we can estimate an upper limit for the galactic cosmic ray electron spectrum in the energy range from a few hundred keV to about 10 MeV.