The study of extended emission in a radio galaxy detected in the LOFAR Two-Metre Sky Survey. Issue 2 (7th February 2019)

• Record Type: Journal Article
• Authors: Thwala, S A; Shafi, N; Colafrancesco, S; Govoni, F; Murgia, M
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 485:Issue 2(2019)
• Page Start: 1938
• Page End: 1946
• Publication Date: 2019-02-07
• Subjects: techniques: image processing -- surveys -- galaxies: general -- galaxies: jets -- radio continuum: galaxies; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/stz347
• Languages: English
• ISSNs: 0035-8711

Abstract

Abstract: We performed a search for extended radio sources in the Low-Frequency Array Two-Meter Survey HETDEX Spring Field, and we were able to identify 11 low-brightness extended sources. In this paper we focus on the poorly studied radio galaxy PGC2285791, presenting a detailed analysis of its core, its two extended radio lobes, a spectral index map between 141 and 1400 MHz, and the multifrequency association with its IR and optical counterparts. Our results led to the identification of this source with a z = 0.14 extended radio galaxy exhibiting bubble-like radio lobe structures (∼6 arcmin in the S–N direction).