ItemArticle

A multi-frequency study of the candidate doubledouble radio galaxy J2349?0003 with a possible misalignment

Title
A multi-frequency study of the candidate doubledouble radio galaxy J2349?0003 with a possible misalignment
Creator
Sudheesh, T.P.; Kale, Ruta; Jithesh, V.; Ishwara-Chandra, C.H.; Jacob, Joe
Description
We present a multi-frequency analysis of the candidate doubledouble radio galaxy (DDRG) J2349?0003, exhibiting a possible lobe misalignment. High-resolution uGMRT observations at Bands 3 and 4 reveal a complex radio morphology featuring a pair of inner and outer lobes, and the radio core, while the Band 5 image detects the core and the compact components. The positioning of both pairs of lobes with the central core supports its classification as a DDRG. Spectral age estimates for the inner and outer lobes indicate two distinct episodes of active galactic nucleus (AGN) activity interspaced by a short quiescent phase. The possible compact steep-spectrum nature of the core, together with its concave spectral curvature, suggests ongoing or recent jet activity, suggesting the possibility that J2349?0003 may be a candidate triple-double radio galaxy. With a projected linear size of 1.08 Mpc, J2349?0003 is classified as a giant radio galaxy (GRG), although its moderate radio power (?1024 WHz-1) suggests a sparse surrounding environment. Arm-length (R?) and flux density ratios (RS) indicate environmental influences on source symmetry. The observed lobe misalignment and the presence of nearby galaxies in the optical image suggest that merger-driven processes may have played a key role in shaping the sources evolution. Indian Academy of Sciences 2025.
Source
Journal of Astrophysics and Astronomy;Volume;46;Issue;2;Article No.;74;
Date
01-01-2025
Publisher
Springer
Subject
Radio continuum: galaxiesgalaxies: active
Coverage
Sudheesh T.P., Department of Physics and Electronics, Christ University, Hosur Main Road, Bengaluru, 560029, India; Kale R., National Centre for Radio Astrophysics, TIFR, Post Bag No. 3, Ganeshkhind, Pune, 411007, India; Jithesh V., Department of Physics and Electronics, Christ University, Hosur Main Road, Bengaluru, 560029, India; Ishwara-Chandra C.H., Department of Physics and Electronics, Christ University, Hosur Main Road, Bengaluru, 560029, India; Jacob J., Newman College, Thodupuzha, 685584, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 2506335;
Format
online
Language
English
Type
Article

Citation

Sudheesh, T.P.; Kale, Ruta; Jithesh, V.; Ishwara-Chandra, C.H.; Jacob, Joe, “A multi-frequency study of the candidate doubledouble radio galaxy J2349?0003 with a possible misalignment,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/21991.

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