High-resolution observations of low-luminosity peaked spectrum sources

TL;DR

This paper discusses high-resolution radio observations of low-luminosity peaked spectrum sources, revealing insights into their physics, evolution, and potential as precursors to larger radio galaxy types.

Contribution

It provides a summary of previous findings and outlines future deep radio observations to better understand low-luminosity peaked spectrum sources.

Findings

Compact sources are often confined within host galaxies.

Low-luminosity sources may be precursors to FR-I galaxies.

Broadband radio spectra reveal detailed inner galaxy physics.

Abstract

Although radio observations have been historically seen as less valuable than optical observations, today's broadband radio spectra of peaked spectrum sources reveal detailed physics from within the inner region of the galaxy, on spatial scales beyond what an optical telescope can resolve. Peaked radio spectra are thought to be evolving into large scale radio galaxies, although an over-abundance of the most compact sources reveals that a significant fraction are confined within their host galaxies. Furthermore, at the lowest luminosities, these sources are largely unknown, and may reveal the small scale precursors of FR-I galaxies. Here I summarise the previous work exploring the properties of low luminosity peaked radio sources, and the future work that extends on this within even deeper radio observations of well studied fields.