Compact objects in Horndeski gravity

TL;DR

This paper reviews recent advances in understanding compact objects like black holes and neutron stars within Horndeski gravity, highlighting new results on slowly rotating neutron stars and black holes as a generalization of Einstein's theory.

Contribution

It provides a comprehensive review of compact objects in Horndeski gravity and introduces new findings on slowly rotating neutron stars.

Findings

Progress in modeling slowly rotating black holes and neutron stars in Horndeski gravity

New results on the structure of slowly rotating neutron stars

Enhanced understanding of modifications to general relativity in astrophysical contexts

Abstract

Horndeski gravity holds a special position as the most general extension of Einstein's theory of general relativity with a single scalar degree of freedom and second-order field equations. Because of these features, Horndeski gravity is an attractive phenomenological playground to investigate the consequences of modifications of general relativity in cosmology and astrophysics. We present a review of the progress made so far in the study of compact objects (black holes and neutron stars) within Horndeski gravity. In particular, we review our recent work on slowly rotating black holes and present some new results on slowly rotating neutron stars.