# The Role of Stellar Mass and Star Formation in Shaping X-ray Emission of Radio-Loud and Radio-Quiet AGN

## TL;DR

This study explores how stellar mass and star formation influence X-ray emissions in radio-loud and radio-quiet AGN, revealing distinct growth and feedback mechanisms in galaxy evolution.

## Contribution

It provides the first detailed comparison of X-ray luminosity, star formation rate, and stellar mass correlations in radio-loud versus radio-quiet AGN.

## Key findings

- RL-AGN show a strong Lx-SFR correlation but no link with M.
- RQ-AGN exhibit positive correlations among all parameters.
- Radio-loud AGN may suppress star formation in host galaxies.

## Abstract

Galaxy evolution and extragalactic astronomy research depend on an understanding of the interactions between active galactic nuclei (AGN) and their host galaxies. We investigate the relationships between X-ray luminosity (Lx), star formation rate (SFR), and stellar mass (M) in distinct samples of radio-loud (RL) and radio-quiet (RQ) AGN. Using data from 4XMM-DR11, SDSS-DR16, and the DESI AGN Host Galaxies VAC, we examine how these key properties correlate within each AGN population. Our analysis reveals different behaviors: RL-AGN show a strong, statistically significant Lx-SFR correlation but no significant link with M, suggesting that accretion and star formation are coupled, possibly independent of host mass. In contrast, RQ-AGN display moderate, significant positive correlations across all parameters, consistent with joint growth driven by a shared cold gas supply.These results suggest that radio-loud AGN might slow down star formation in their galaxies, while radio-quiet AGN seem to grow together with it.

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Source: https://tomesphere.com/paper/2509.00612