Magnetic star–planet interactions (SPI) are expected to produce low-frequency radio emission; however, such signals remain elusive due to several limiting factors, including weak intrinsic power, directional beaming, and Earth’s ionospheric cutoff. I will present a framework that combines stellar magnetic maps from Zeeman Doppler Imaging with 3D magnetohydrodynamic wind simulations to model SPI-driven radio emission originating from the star. This approach not only helps prioritize the most promising targets for observation, but also predicts how an SPI-induced signal should appear, enabling us to distinguish it from other stellar or background emission. Applied to benchmark systems such as tau Boo, HD 179949, and HD 189733, this framework provides a systematic, data-driven strategy to guide current and future radio campaigns and bring us closer to the first robust detections of magnetic SPI beyond our solar system.
Local contact: Thierry FOGLIZZO
Organisation: Frédéric GALLIANO
DAp