The field of exoplanet atmospheric characterization has recently made considerable
advances with the advent of high-resolution spectroscopy from large ground-based …

Our host star, the Sun, is a middle-aged main sequence G type star whose activity varies.
These variations are primarily governed by solar magnetic fields which are produced in the …

As a cool star evolves, it loses mass and angular momentum due to magnetized stellar
winds that affect its rotational evolution. This change has consequences that range from the …

Atmospheric escape from close-in exoplanets is thought to be crucial in shaping observed
planetary populations. Recently, significant progress has been made in observing this …

Lyman α transits have been detected from several nearby exoplanets and are one of our
best insights into the atmospheric escape process. However, due to ISM absorption, we …

Photoevaporation is a potential explanation for several features within exoplanet
demographics. Atmospheric escape observed in young Neptune-sized exoplanets can …

Two close-in planets have been recently found around the M-dwarf flare star AU Microscopii
(AU Mic). These Neptune-sized planets (AU Mic b and c) seem to be located very close to …

We simulate the space environment around AU Microscopii b and the interaction between
the magnetized stellar wind and a planetary atmospheric outflow for ambient stellar wind …

Using 3D radiative MHD simulations and Lyman-α transit calculations, we investigate the
effect of magnetic fields on the observational signatures of atmospheric escape in …

Forming planets around young, fast-rotating solar-like stars are exposed to an intense X-
ray/extreme ultraviolet radiation field and strongly magnetized stellar winds, as a …