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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/20.500.12386/28066
Title: Observations of a nearby filament of galaxy clusters with the Sardinia Radio Telescope
Authors: VACCA, VALENTINA 
MURGIA, MATTEO 
GOVONI, FEDERICA 
LOI, FRANCESCA 
VAZZA, FRANCO 
Finoguenov, A.
CARRETTI, ETTORE 
FERETTI, LUIGINA
Giovannini, Gabriele 
CONCU, Raimondo 
MELIS, Andrea 
Gheller, C.
Paladino, Rosita 
POPPI, Sergio 
Valente, G.
BERNARDI, GIANNI 
Boschin, Walter
BRIENZA, MARISA 
Clarke, T. E.
Colafrancesco, S.
Enßlin, T. A.
Ferrari, C.
de Gasperin, F.
GASTALDELLO, FABIO 
Girardi, M.
Gregorini, Loretta
Johnston-Hollitt, M.
Junklewitz, H.
Orrù, E.
Parma, P.
Perley, R.
Taylor, G. B.
Issue Date: 2018
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 479
Issue: 1
First Page: 776
Abstract: We report the detection of diffuse radio emission which might be connected to a large-scale filament of the cosmic web covering a 8° × 8° area in the sky, likely associated with a z ≈ 0.1 overdensity traced by nine massive galaxy clusters. In this work, we present radio observations of this region taken with the Sardinia Radio Telescope. Two of the clusters in the field host a powerful radio halo sustained by violent ongoing mergers and provide direct proof of intracluster magnetic fields. In order to investigate the presence of large-scale diffuse radio synchrotron emission in and beyond the galaxy clusters in this complex system, we combined the data taken at 1.4 GHz with the Sardinia Radio Telescope with higher resolution data taken with the NRAO VLA Sky Survey. We found 28 candidate new sources with a size larger and X-ray emission fainter than known diffuse large-scale synchrotron cluster sources for a given radio power. This new population is potentially the tip of the iceberg of a class of diffuse large-scale synchrotron sources associated with the filaments of the cosmic web. In addition, we found in the field a candidate new giant radio galaxy.
URI: http://hdl.handle.net/20.500.12386/28066
URL: https://academic.oup.com/mnras/article/479/1/776/4992757
ISSN: 0035-8711
DOI: 10.1093/mnras/sty1151
Bibcode ADS: 2018MNRAS.479..776V
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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