Astronomy and astrophysics

Characterisation of exoplanet atmospheres, magnetospheres and stellar winds from energetic neutral atom observations

by Mats Holmström (IRF Kiruna)

Europe/Stockholm
FA31

FA31

Description
We review observations of energetic neutral atoms (ENAs) in the Solar System. This is done with a focus on the populations that could be remotely observed in other stellar system, and we present how Lyman- alpha observations of transiting extrasolar planets could detect ENAs near these planets. We also discuss the problems and uncertainties in interpreting such transit spectra. Finally, we conclude with an outlook to future observations, and possible directions in modeling.