The Lockman Hole with LOFAR - Searching for GPS and CSS sources at low frequencies

TL;DR

This study uses LOFAR radio observations at 150 MHz to investigate the properties and evolution of GPS and CSS radio sources in the Lockman Hole, expanding understanding of faint radio source populations at low frequencies.

Contribution

It presents new low-frequency data from LOFAR for the Lockman Hole, enabling the study of spectral peaks and evolution of GPS and CSS sources in a deep radio field.

Findings

Extended radio spectral information down to 150 MHz.

Preliminary identification of GPS and CSS source candidates.

Insights into the evolution of faint radio sources at low frequencies.

Abstract

The Lockman Hole Project is a wide international collaboration aimed at exploiting the multi-band extensive and deep information available for the Lockman Hole region, with the aim of better characterizing the physical and evolutionary properties of the various source populations detected in deep radio fields. Recent observations with the LOw-Frequency ARray (LOFAR) extends the multi-frequency radio information currently available for the Lockman Hole (from 350 MHz up to 15 GHz) down to 150 MHz, allowing us to explore a new radio spectral window for the faint radio source population. These LOFAR observations allow us to study the population of sources with spectral peaks at lower radio frequencies, providing insight into the evolution of GPS and CSS sources. In this general framework, I present preliminary results from 150 MHz LOFAR observations of the Lockman Hole field.