Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 501, Issue 1, Pages 853-865Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/staa3632
Keywords
radiation mechanisms: non-thermal; galaxies: active; galaxies: individual: J0028+0035; galaxies: jets; radio continuum: galaxies
Categories
Funding
- CNRS-INSU, France
- Observatoire de Paris, France
- Universite d'Orleans, France
- BMBF, Germany
- MIWF-NRW, Germany
- MPG, Germany
- Science Foundation Ireland (SFI), Department of Business, Enterprise and Innovation (DBEI), Ireland
- NWO, The Netherlands
- Science and Technology Facilities Council, UK
- Ministry of Science and Higher Education (MSHE), Poland
- MSHE [DIR/WK/2016/2017/05-1]
- SURF [e-infra 160022, e-infra 160152]
- European Research Council Advanced Grant [NEWCLUSTERS-321271]
- UK Science and Technology Funding Council [ST/P000096/1]
- Alfred P. Sloan Foundation
- U.S. Department of Energy Office of Science
- Center for High-Performance Computing at the University of Utah
- Brazilian Participation Group
- Carnegie Institution for Science
- Carnegie Mellon University
- Chilean Participation Group
- French Participation Group
- Harvard Smithsonian Center for Astrophysics
- Instituto de Astrofisica de Canarias
- Johns Hopkins University
- Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo
- Korean Participation Group
- Lawrence Berkeley National Laboratory
- Leibniz Institut fur Astrophysik Potsdam (AIP)
- Max-Planck-Institut fur Astronomie (MPIA Heidelberg)
- Max-Planck-Institut fur Astrophysik (MPA Garching)
- Max-Planck-Institut fur Extraterrestrische Physik (MPE)
- National Astronomical Observatories of China
- New Mexico State University
- New York University
- University of Notre Dame
- Observatario Nacional/MCTI
- Ohio State University
- Pennsylvania State University
- Shanghai Astronomical Observatory
- United Kingdom Participation Group
- Universidad Nacional Autonoma de Mexico
- University of Arizona
- University of Colorado Boulder
- University of Oxford
- University of Portsmouth
- University of Utah
- University of Virginia
- University of Washington
- University of Wisconsin
- Vanderbilt University
- Yale University
- National Aeronautics and Space Administration [NNX08AR22G]
- National Science Foundation [AST-1238877]
- Polish National Science Centre grant [UMO-2018/29/B/ST9/01793]
- STFC [ST/P000096/1, ST/R000905/1] Funding Source: UKRI
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The discovery of a double-double radio source was reported, revealing its physical properties and dynamical evolution analysis. The source has characteristics such as older age of outer lobes, similar spectral indices for inner and outer lobes pairs.
We report the discovery of a double-double radio source (DDRS) J0028+0035. We observed it with LOFAR, GMRT, and the VLA. By combining our observational data with those from the literature, we gathered an appreciable set of radio flux density measurements covering the range from 74 MHz to 14 GHz. This enabled us to carry out an extensive review of physical properties of the source and its dynamical evolution analysis. In particular, we found that, while the age of the large-scale outer lobes is about 245 Myr, the renewal of the jet activity, which is directly responsible for the double-double structure, took place only about 3.6 Myr ago after about 11 Myr long period of quiescence. Another important property typical for DDRSs and also present here is that the injection spectral indices for the inner and the outer pair of lobes are similar. The jet powers in J0028+0035 are similar too. Both these circumstances support our inference that it is, in fact, a DDRS which was not recognized as such so far because of the presence of a coincident compact object close to the inner double so that the centre of J0028+0035 is apparently a triple.
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