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Hugo, B; Bernardi, G; Smirnov, O M; Dallacasa, D; Venturi, T; Murgia, M; Pizzo, R F
Monthly notices of the Royal Astronomical Society, 10/2023, Letnik: 526, Številka: 4Journal Article
ABSTRACT The Main galaxy cluster in the Abell 781 system is undergoing a significant merger and accretion process with peripheral emission to the north and south-eastern flanks of the merging structure. Here we present a full polarimetric study of this field, using radio interferometric data taken at 21 and 92 cm with the Westerbork Synthesis Radio Telescope (WSRT), to a sensitivity better than any 21 cm (L band) observation to date. We detect evidence of extended low-level emission of 1.9 mJy associated with the Main cluster at 21 cm, although this detection necessitates further follow-up by modern instruments due to the limited resolution of the WSRT. Our polarimetric study indicates that, most likely, the peripheral emission associated with this cluster is not a radio relic.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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