Radio multifrequency observations of Abell 781 with the WSRT
Date Issued
2023
Author(s)
Hugo, B.
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Smirnov, O. M.
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Pizzo, R. F.
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.
Volume
526
Issue
4
Start page
5278
Issn Identifier
0035-8711
Rights
open.access
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