Göttingen 2025 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 11: Sun and Heliosphere IV
EP 11.6: Vortrag
Donnerstag, 3. April 2025, 15:00–15:15, ZHG101
STEREO REleASE: Real time solar energetic proton forecasting — •Henrik Dröge1, Bernd Heber1, Alexander Kollhoff1, Patrick Kühl1, Olga Malandraki2, and Arik Posner3 — 1Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Germany — 2National Observatory of Athens, Athens, Greece — 3NASA/HQ, Washington, DC 20546, USA
Sudden Solar Energetic Particle (SEP) events can have a major impact on technology and humans in space. Therefore forecasts and early warning systems working to support those missions are desirable. One example is REleASE, which utilizes the close correlation of near relativistic electrons and the slower but more hazardous protons. The original HESPARIA REleASE system uses electron measurements from SOHO/EPHIN and ACE/EPAM to issue short term warnings before there is a significant flux increase of >20 MeV protons at L1.
We now adapted the method to work with the High Energy Telescope (HET) and the Solar Electron Proton Telescope (SEPT) on board of STEREO-A. The resulting forecasts are publicly available in real time. With now two REleASE systems operational we have the unique possibility to directly compare the forecasts from different points in the heliosphere and test the accuracy depending on the magnetic connection.
Furthermore, we gained valuable insights from adapting the method to the SEPT that uses the magnet/foil technique to separate electrons from ions, which can pose several difficulties.
Keywords: Solar Energetic Particles; Forecast