Non-homogeneous exoplanets in metric-affine gravity

TL;DR

This paper investigates how modified gravity theories affect the internal structure and observable properties of Earth-like exoplanets, revealing deviations from traditional Newtonian models in mass-radius relations and density profiles.

Contribution

It introduces a framework for analyzing non-homogeneous exoplanets within metric-affine gravity, highlighting differences from standard gravity models.

Findings

Mass-radius relations differ from Newtonian predictions

Density profiles show significant deviations

Modified gravity impacts planetary interior modeling

Abstract

The improved description of the planets' interior is provided. We examine the modified gravity effects on the Earth-like planets composed of the iron core and silicate mantle. We confirm that the mass-radius relations, as well as density profiles, differ with respect to the commonly adopted Newtonian models.