Detecting Magnetic Fields in Exoplanets with Spectropolarimetry of the Helium Line at 1083 nm

Published in ApJ, 2020

We analyze the linearly polarized absorption effects of the He 1083 nm line from escaping exoplanet atmospheres. The magnetic field of such exoplanets can induce a polarized effect on the absorption profile, which can be calculated in the Stokes’ parameters of the light. The numerical comparison was done the the well-known code HAZEL, which computes the Stokes’ parameters for light passing through a slab of Helium in a magnetic field.

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