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Advancing radiation belt modeling with nonlinear wave–particle interactions

Project description

Protecting orbital infrastructure from high-energy electrons

Earth’s radiation belts contain high-energy electrons that can damage satellites and space-based electronics during geomagnetic storms. Existing models often fail to predict these dynamics accurately because they overlook the rapid, nonlinear acceleration driven by intense plasma waves. Supported by the Marie Skłodowska-Curie Actions programme, the ARBEN project aims to address this gap by integrating these complex wave-particle interactions into current forecasting tools. Using computer simulations and spacecraft measurements, the project will compile a database of corrected physical parameters for global radiation belt models. Beyond improving space weather forecasting for hazardous events, the project will support interdisciplinary training in instrumentation and computational physics. Ultimately, this research aims to protect critical infrastructure while preparing the next generation of scientific leaders.

Objective

Understanding and forecasting the behavior of high-energy electrons in Earth’s radiation belts is essential for protecting satellites and other space-based infrastructure during geomagnetic storms. These electrons can penetrate spacecraft shielding, damage onboard electronics, and shorten mission lifetimes. Yet their dynamics remain difficult to predict.
Current models treat magnetospheric plasma waves as incoherent, leading to a simplified picture of electrons undergoing slow, diffusive energy transport. However, modern spacecraft observations reveal that intense plasma waves, particularly whistler-mode chorus, often exhibit coherent, narrowband waveforms that enable rapid and nonlinear acceleration of trapped electrons. This process may dominate during storm conditions but is not captured in existing models.
My ARBEN project addresses this critical gap by systematically incorporating nonlinear wave–particle interactions into radiation belt models. I will use test-particle simulations to derive corrections to standard diffusion coefficients in realistic wave fields, building on recent theoretical advances and high-resolution waveform measurements from spacecraft. These coefficients will be compiled into a database linked to observable wave parameters and implemented in leading global radiation belt models (DREAM, VERB) to assess their impact during geomagnetic storms and superstorms.
The outcome will be a physics-based correction framework that enhances space weather forecasting capabilities during the most hazardous events. The fellowship will also support interdisciplinary training at the University of Michigan, including collaborations on spacecraft instrumentation, computational electromagnetism, and fluid dynamics. I will gain experience in mentoring, teaching, and leadership, preparing for a future independent research career.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-GF - HORIZON TMA MSCA Postdoctoral Fellowships - Global Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

GFZ HELMHOLTZ-ZENTRUM FUR GEOFORSCHUNG
Net EU contribution
€ 401 232,00
Address
TELEGRAFENBERG
14473 POTSDAM
Germany
Region
Brandenburg Brandenburg Potsdam
Activity type
Research Organisations
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Total cost
No data

Partners (2)