Interaction of the Exoplanet Hat–P–11b with Stellar Wind

Abstract

We discuss possible existence of a magnetodisk around the exoplanet HAT–P–11b. We used available observations to determine properties of the exoplanet and the stellar wind passing by it and obtained a rough estimate of the size of the planet’s magnetosphere. Comparing our estimate to published results of computations in a 3D electromagnetic relativistic and collisionless particle-in-cell model of the magnetosphere, we found a discrepancy in the magnetosphere size estimated using these two techniques. A possible interpretation of the discrepancy is suggested.