Mechanism of radius inflation in giant exoplanets

Determine the exact physical mechanism responsible for radius inflation in highly irradiated giant exoplanets.

Background

The paper discusses radius inflation as an important complication in empirical exoplanet mass–radius relations, particularly for highly irradiated giant planets. Although the magnitude of inflation depends on planetary mass and irradiation, the physical process that produces the enlarged radii is not established. Identifying this mechanism is necessary for interpreting inflated planets, defining reliable inflation-correction procedures, and improving empirical mass–radius relations.