The central FR0 in the sloshing cluster Abell 795: Indications of mechanical feedback from Chandra data

TL;DR

This study analyzes the central FR0 radio galaxy in Abell 795, revealing evidence of mechanical feedback through X-ray cavities and gas sloshing, which may influence the understanding of jet power in compact radio galaxies.

Contribution

It provides the first evidence of X-ray cavities associated with an FR0 galaxy, suggesting mechanical feedback mechanisms in these compact sources.

Findings

Detection of gas sloshing in Abell 795.

Identification of potential X-ray cavities near the FR0.

Implication of feedback processes in FR0 radio galaxies.

Abstract

We present a detailed study of the galaxy cluster Abell 795 and of its central Fanaroff-Riley Type 0 (FR0) radio galaxy. From an archival Chandra observation, we found a dynamically disturbed environment with evidences for sloshing of the intracluster medium. We argue that the environment alone cannot explain the compactness of the radio galaxy, as similar conditions are also found around extended sources. We identified a pair of putative X-ray cavities in the proximity of the center: These could have been created in a past outburst of the FR0, and dragged away by the large-scale gas movement. The presence of X-ray cavities associated with a FR0 could open a new window on the study of jet power and feedback properties of this recently discovered class of compact radio galaxies.