EGU23-14698, updated on 10 Jan 2024
EGU General Assembly 2023
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Anisotropies of solar energetic electrons in the MeV range measured with SolO/EPD/HET

Sebastian Fleth1, Patrick Kühl1, Alexander Kollhoff1, Robert F. Wimmer-Schweingruber1, Bernd Heber1, Javier Rodríguez-Pacheco2, and Nina Dresing3
Sebastian Fleth et al.
  • 1Institute of Experimental & applied Physics, Kiel University, 24118 Kiel, Germany
  • 2Space Research Group/Universidad de Alcalá, Madrid, Spain
  • 3Department of Physics and Astronomy, University of Turku, Turku, Finland

Solar Orbiter is an ESA-led mission of international collaboration with NASA to investigate how the Sun creates and controls the heliosphere, and why solar activity changes with time. One of its top-level science questions is how solar eruptions produce energetic particle radiation that fills the heliosphere. With its four viewing directions the High-Energy telescope (HET) provides critical information about the sources and transport of high-energy particles.

This study analyses relativistic electron measurements obtained by HET in the energy range from 200 keV to above 10 MeV. The purpose of this study is to analyse anisotropies of relativistic solar energetic electrons utilizing the different viewing directions of HET. Time periods with enhanced fluxes of relativistic electrons, have been identified. A list of these time periods including additional observations such as maximum energy and flux as well as the first order anistropy will be presented. This is the first time since the Helios mission that anisotropies of high energy electrons have been measured.

How to cite: Fleth, S., Kühl, P., Kollhoff, A., Wimmer-Schweingruber, R. F., Heber, B., Rodríguez-Pacheco, J., and Dresing, N.: Anisotropies of solar energetic electrons in the MeV range measured with SolO/EPD/HET, EGU General Assembly 2023, Vienna, Austria, 23–28 Apr 2023, EGU23-14698,, 2023.