On the relative importance of AGN winds for the evolution of exoplanet atmospheres

TL;DR

This paper evaluates the impact of AGN winds on exoplanet atmospheres and finds they are less significant than stellar winds and magnetic protection in affecting planetary habitability.

Contribution

It provides a comparative analysis showing AGN winds are unlikely to significantly influence exoplanet atmospheric evolution compared to stellar effects.

Findings

AGN winds are less impactful than stellar winds on exoplanet atmospheres.

Planetary magnetospheres offer significant protection against external winds.

AGN activity is unlikely to threaten habitability under typical conditions.

Abstract

Recent work investigating the impact of winds and outflows from active galactic nuclei (AGN) on the habitability of exoplanets suggests that such activity could be deleterious for the long-term survival of planetary atmospheres and the habitability of planets subject to such winds. Here, we discuss the relative importance of the effect of AGN winds compared to stellar winds and the effect of the planet's magnetosphere and stellar irradiation and conclude that AGN winds are not likely to play a significant role in the evolution of atmospheric conditions in planets under conditions otherwise favorable for habitability.