External Colloquium | Antonino Francesco Lanza (INAF | Catania)

Late-type stars and their close-by planets: aspects of their magnetic interactions

Stars interact with their close-by planets through the gravitational and the magnetic fields as well as with their radiation. After a brief introduction to those different kinds of interactions, I shall review some observational clues of magnetic star-planet interactions considering data obtained in the optical, X-ray, and radio domains. Some analytical models, based on a stellar force-free coronal field or the excitation of Alfven waves by an orbiting planet, will be presented to explore the energetics of the interactions. Some numerical models will be discussed to show their advantages and drawbacks in predicting the interactions. A selection of preliminary results on the impact of star-planet magnetic interactions on the future direct imaging of exoplanets will be presented.

• Datum:
  8. Mai 2025, 14:00 – 16:00
  
  
• Ort:

  Maria Margaretha Kirch Haus Conference Room

  
  
• Kontakt:
  Julián Alvarado-Gómez