Speaker
Description
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 the REleASE system (A. Posner, 2007), which utilizes the close correlation of near relativistic electrons and the slower but more hazardous protons. The early arrival of the electrons can be used to forecast the expected proton flux. Originally, REleASE uses real time data from SOHO/EPHIN and later ACE/EPAM (HESPERIA/REleASE) to issue short term warnings before there is a significant flux increase of ~20-50 MeV protons near Earth at the L1 point. We now successfully adapted the method to work with the High Energy Telescope (HET) and the Solar Electron Proton Telescope (SEPT) on board of STEREO-A and created a STEREO/REleASE system. It was validated with ~15 years of historic data and also implemented to run in real time. Resulting forecasts are publicly available and can be accessed on a dedicated website.
We gained valuable insights from adapting the method to the instrumentation on board of STEREO-A, especially with the SEPT that uses the magnet/foil technique to separate electrons from ions. This will help us with the implementation of REleASE to future mission such as IMAP.
With now two REleASE systems operational we have the possibility to directly compare forecasts from different points in the heliosphere, which could contribute to the radiation protection of future manned space missions.
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