# Searching for a pair of accreting supermassive black holes in J1425+3231

## TL;DR

This study used high-resolution radio observations to investigate a candidate dual active galactic nucleus, finding that its features are better explained by jet-cloud interactions rather than dual SMBHs.

## Contribution

The paper provides the first detailed radio observational analysis of SDSS J1425+3231, challenging previous dual AGN interpretations with evidence for jet-cloud interactions.

## Key findings

- Radio observations favor jet-cloud interactions over dual SMBHs.
- No direct evidence of dual active galactic nuclei in the source.
- Optical spectrum can be explained without invoking dual SMBHs.

## Abstract

In hierarchical structure formation scenarios, merging galaxies are expected to be seen in different phases of their coalescence. Simulations suggest that simultaneous activity of the supermassive black holes (SMBHs) in the centres of the merging galaxies may be expected at kpc-scale separations. Currently, there are no direct observational methods which allow the selection of a large number of such dual active galactic nuclei (AGN) candidates. SDSS J142507.32+323137.4 was reported as a promising candidate source based on its optical spectrum. Here we report on our sensitive e-MERLIN observations performed at $1.6$ and at $5$ GHz, which show that the optical spectrum of the source can be more straightforwardly explained with jet-cloud interactions instead of the dual AGN scenario.