Stuttgart 2012 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 19: Sonne und Heliosphäre II
EP 19.7: Vortrag
Freitag, 16. März 2012, 12:15–12:30, V55.21
Transport modeling of STEREO-A/B and ACE electron observations on 7 February 2010 — •Wolfgang Dröge1, Yulia Kartavykh1, Raul Gómez-Herrero2, Nina Dresing2, and Bernd Heber2 — 1Institut für Theoretische Physik und Astrophysik, Universität Würzburg, D-97074 Würzburg, Germany — 2Institut für Experimentelle und Angewandte Physik, Universität Kiel, D-24118 Kiel, Germany
We present an analysis of near-relativistic electrons which were observed simultaneously by the EPAM instrument onboard ACE and the SEPT instruments onboard the two STEREO spacecraft following a solar flare on 7 February 2010. At the time of the event the longitudinal separation of the two STEREO spacecraft was approximately 130 degrees. We have applied our numerical three-dimensional transport model which incorporates pitch angle diffusion, focusing and pitch-angle dependent diffusion perpendicular to the magnetic field to model intensity profiles and angular distributions observed on the three spacecraft. An attempt is made to disentangle the effects of a longitudinal dependence of electron injection close to the Sun from transport perpendicular to the magnetic field in interplanetary space.