Why so young? A curious connection between the broadband flux and neutral gas content of AGN

TL;DR

This study investigates the relationship between broadband spectral properties and neutral gas content in AGN, revealing correlations that inform understanding of gas distribution and jet interactions.

Contribution

The paper introduces a spectral classification approach and explores the correlation between spectral shape and HI absorption in a new sample of AGN.

Findings

Spectral shape correlates with HI absorption detection.

Implications for the spatial distribution of neutral gas.

Insights into jet-gas interactions in AGN.

Abstract

We present here a study of the broadband spectral properties of 33 sources detected in HI absorption as part of the ASKAP-FLASH Pilot Surveys. We outline our approach to spectral classification and discuss the correlation seen between spectral shape and the detection of HI absorption. We further consider the implications of the observed correlation on the spatial distribution of the neutral gas, and on the jet-gas interactions. Our results are evaluated in the context of the forthcoming, full ASKAP-FLASH survey and other large, untargeted searches of the radio sky.