Extended sources from deep GMRT 150 MHz observations

TL;DR

This paper reports deep low-frequency GMRT observations revealing various extended radio sources, including a giant radio galaxy, with follow-up at higher frequencies to analyze their structures and classify their nature.

Contribution

The study provides detailed morphological analysis of extended radio sources at 150 MHz and higher frequencies, including the identification of a normal radio galaxy and a giant radio galaxy.

Findings

Identification of multiple extended radio sources with diverse morphologies

Confirmation of the core and jet structure in a candidate double-double radio galaxy

Detailed characterization of the giant radio galaxy 4C39.04

Abstract

We present results of deep 150 MHz observations with the GMRT which show several extended radio sources with a range of morphologies. These sources have then further followed up at higher frequencies (610 and 1400 MHz) with the GMRT. GMRT J0137+4121 was a candidate double--double radio galaxy for which we have also used the VLA-A array at C band to resolve the core. These observations have allowed us to determine that this source is a normal radio galaxy with a core and a one sided jet. Prominent amongst the other extended sources is the giant radio galaxy, 4C39.04.