Interiors of terrestrial planets in metric-affine gravity

TL;DR

This paper investigates how metric-affine gravity influences the internal structure of terrestrial planets, including their core and mantle, and applies these insights to model exoplanets within Palatini $f(R)$ gravity.

Contribution

It introduces a semi-empirical method to analyze planetary interiors under modified gravity and models a two-layer exoplanet in Palatini $f(R)$ gravity.

Findings

Modified gravity impacts planetary core and mantle properties.

Application to exoplanet modeling in Palatini $f(R)$ gravity.

Provides a framework for studying planetary interiors in alternative gravity theories.

Abstract

Using a semi-empirical approach we show that modified gravity affects the internal properties of terrestrial planets, such as their physical characteristics of a core, mantle, and core-mantle boundary. We also apply these findings for modeling a two-layers exoplanet in Palatini $f(R)$ gravity.