Subtitle :
Magnetospheric Radio Emissions : from Jupiter to exoplanets and stars
Abstract :
Jupiter’s radio emissions have been intensively studied since their discovery some 70 years ago. Space missions have extended these studies to radio emissions from all planetary magnetospheres in the solar system. Main emission characteristics have been determined (source location, directivity, power, polarization, etc.) and their microscopic generation process elucidated (primarily the electron Cyclotron Maser instability). The 3 magnetospheric engines of these emissions are now well documented (solar wind-magnetosphere, magnetosphere-ionosphere, and satellite-planet interactions). We can thus try to extrapolate our solar system-based knowledge to star-exoplanet systems, and attempt to detect radio emissions from these systems. I will give an overview of the theoretical framework and observational results to date, with prospects for the coming years. Motivations for these studies include direct exoplanetary magnetic field measurement, planetary protection, compared magnetospheric physics and exo-space weather.
Permanent Zoom link : https://cnrs.zoom.us/j/95003883304?pwd=MI0B5WLYiGZlzo3oAZUl5TAu4fta6q.1
