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On the Interplanetary Parameter Schemes which Drive the Variability of the Source/Seed Electron Population at GEO
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  • Christos Katsavrias,
  • Sigiava Aminalragia-Giamini,
  • Constantinos Papadimitriou,
  • Ingmar Sandberg,
  • Piers Jiggens,
  • Ioannis A. Daglis,
  • Hugh D. Evans
Christos Katsavrias
University of Athens

Corresponding Author:[email protected]

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Sigiava Aminalragia-Giamini
Space Applications and Research Consultancy
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Constantinos Papadimitriou
Space Applications and Research Consultancy
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Ingmar Sandberg
Space Applications and Research Consultancy
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Piers Jiggens
European Space Agency
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Ioannis A. Daglis
National and Kapodistrian University of Athens
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Hugh D. Evans
ESA
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Abstract

Electron variability at geosynchronous orbit plays a key role in satellite operations especially concerning the low energies which can lead to surface charging effects on spacecraft. In this work, we use 9 years (2011-2019) of electron measurements from GOES-13, 14 and 15 satellites to study the evolution of electron uxes with various solar, solar wind and magnetospheric parameters. The source electron fluxes are shown to be well correlated with AE index and Newell’s function, while the seed electron fluxes are shown to be well correlated with solar wind speed. Based on these findings, we have developed a predictive multiple regression model for electron fluxes in the 30-350 keV energy range which uses solely solar wind parameters’ measurements. The model may have a variety of applications related nowcasting/forecasting of the distribution of electron fluxes at GEO including serving as low-energy boundary conditions for studying electron acceleration to relativistic energies or providing information for predicting surface and/or internal charging effects on spacecraft.