Revealing Magnetic Fields in Exoplanets and Brown Dwarfs via Auroral Radio Emission

4:00 – 5:00 pm, IFS Seminar Room (WIL472)

Speaker: Kevin Ortiz Ceballos

Abstract: Magnetic fields shape the atmospheres, space environments, and long-term evolution of exoplanets and brown dwarfs, yet remain difficult to measure directly beyond the Solar System. Auroral radio emission provides a direct probe of magnetospheric processes, testing how fields scale across the stellar–planetary boundary and whether a common auroral and dynamo framework extends from brown dwarfs to giant exoplanets. In this talk, I will present results from a coordinated set of surveys and targeted observations, including wide-field searches that discover new populations of radio-bright brown dwarfs and focused campaigns that have uncovered auroral radio bursts from a nearby planetary system. Collectively, these results link brown dwarf and planetary magnetospheres, establish the emerging demographics of auroral radio emitters, and demonstrate how radio observations can directly measure magnetic fields in extrasolar systems, opening a new window into planetary-scale magnetic dynamos.

Host: Yvette Cendes