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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28685
Title: New giant radio sources and underluminous radio halos in two galaxy clusters
Authors: Cuciti, V
BRUNETTI, GIANFRANCO 
van Weeren, R.
BONAFEDE, ANNALISA 
CASSANO, Rossella 
VENTURI, Tiziana 
Kale, R.
Issue Date: 2018
Journal: ASTRONOMY & ASTROPHYSICS 
Number: 609
First Page: 1
Abstract: The aim of this work is to analyse the radio properties of the massive and dynamically disturbed clusters Abell 1451 and Zwcl 0634.1+4750, especially focusing on the possible presence of diffuse emission. Methods: We present new Giant Metrewave Radio Telescope (GMRT) 320 MHz and Jansky Very Large Array (JVLA) 1.5 GHz observations of these two clusters. Results: We found that both Abell 1451 and Zwcl 0634.1+4750 host a radio halo with a typical spectrum (α 1-1.3). Similarly to a few other cases reported in the recent literature, these radio halos are significantly fainter in radio luminosity with respect to the current radio power-mass correlations and they are smaller than classical giant radio halos. These underluminous sources might contribute to elucidating the complex mechanisms of formation and evolution of radio halos. Furthermore, we detected a candidate radio relic at large distance from the cluster centre in Abell 1451 and a peculiar head-tail (HT) radio galaxy in Zwcl 0634.1+4750, which might be interacting with a shock front.
URI: http://hdl.handle.net/20.500.12386/28685
URL: https://www.aanda.org/articles/aa/full_html/2018/01/aa31174-17/aa31174-17.html
ISSN: 0004-6361
DOI: 10.1051/0004-6361/201731174
Bibcode ADS: 2018A&A...609A..61C
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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