Barbell-shaped giant radio galaxy with ? 100 kpc kink in the jet
- Title
- Barbell-shaped giant radio galaxy with ? 100 kpc kink in the jet
- Creator
- Dabhade P.; Shimwell T.W.; Bagchi J.; Saikia D.J.; Combes F.; Gaikwad M.; Rtgering H.J.A.; Mohapatra A.; Ishwara-Chandra C.H.; Intema H.T.; Raychaudhury S.
- Description
- We present for the first time a study of peculiar giant radio galaxy (GRG) J223301+131502 using deep multi-frequency radio observations from GMRT (323, 612, and 1300 MHz) and LOFAR (144 MHz) along with optical spectroscopic observations with the WHT 4.2m optical telescope. Our observations have firmly established its redshift of 0.09956 and unveiled its exceptional jet structure extending more than ? 200 kpc leading to a peculiar kink structure of ? 100 kpc. We measure the overall size of this GRG to be ? 1.83 Mpc; it exhibits lobes without any prominent hotspots and closely resembles a barbell. Our deep low-frequency radio maps clearly reveal the steep-spectrum diffuse emission from the lobes of the GRG. The magnetic field strength of ? 5 ?G and spectral ages between about 110 to 200 mega years for the radio lobes were estimated using radio data from LOFAR 144 MHz observations and GMRT 323 and 612 MHz observations. We discuss the possible causes leading to the formation of the observed kink feature for the GRG, which include precession of the jet axis, development of instabilities and magnetic reconnection. Despite its enormous size, the Barbell GRG is found to be residing in a low-mass (M200 ? 1014 M) galaxy cluster. This GRG with two-sided large-scale jets with a kink and diffuse outer lobes residing in a cluster environment, provides an opportunity to explore the structure and growth of GRGs in different environments. 2022 EDP Sciences. All rights reserved.
- Source
- Astronomy and Astrophysics, Vol-668
- Date
- 2022-01-01
- Publisher
- EDP Sciences
- Subject
- Galaxies: active; Galaxies: clusters: general; Galaxies: clusters: intracluster medium; Galaxies: jets; Instabilities; Radio continuum: galaxies
- Coverage
- Dabhade P., Observatoire de Paris, Lerma, Colle de France, Cnrs, Psl University, Sorbonne University, Paris, 75014, France; Shimwell T.W., Astron, Netherlands Institute for Radio Astronomy, Postbus 2, AA Dwingeloo, 7990, Netherlands, Leiden Observatory, Leiden University, PO Box 9513, RA Leiden, 2300, Netherlands; Bagchi J., Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune, 411007, India, Department of Physics and Electronics, Christ (Deemed to Be University), Bengaluru, 560029, India; Saikia D.J., Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune, 411007, India, Department of Physics, Tezpur University, Tezpur, 784028, India; Combes F., Observatoire de Paris, Lerma, Colle de France, Cnrs, Psl University, Sorbonne University, Paris, 75014, France; Gaikwad M., Max-Planck-Institut f Radioastronomie, Auf dem Hugel 69, Bonn, 53121, Germany; Rtgering H.J.A., Leiden Observatory, Leiden University, PO Box 9513, RA Leiden, 2300, Netherlands; Mohapatra A., Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune, 411007, India; Ishwara-Chandra C.H., National Centre for Radio Astrophysics, Tifr, Post Bag 3, Ganeshkhind, Pune, 411007, India; Intema H.T., Leiden Observatory, Leiden University, PO Box 9513, RA Leiden, 2300, Netherlands; Raychaudhury S., Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune, 411007, India, School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, United Kingdom
- Rights
- All Open Access; Green Open Access; Hybrid Gold Open Access
- Relation
- ISSN: 46361; CODEN: AAEJA
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Dabhade P.; Shimwell T.W.; Bagchi J.; Saikia D.J.; Combes F.; Gaikwad M.; Rtgering H.J.A.; Mohapatra A.; Ishwara-Chandra C.H.; Intema H.T.; Raychaudhury S., “Barbell-shaped giant radio galaxy with ? 100 kpc kink in the jet,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 24, 2025, https://archives.christuniversity.in/items/show/14718.