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The XXL Survey XXXI...
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Eyles, R. A. J.University Of Leicester
(author)
The XXL Survey XXXIX. Polarised radio sources in the XXL-South field
- Article/chapterEnglish2020
Publisher, publication year, extent ...
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2019-12-19
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EDP Sciences,2020
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LIBRIS-ID:oai:research.chalmers.se:77c9cddd-26a8-4fc4-962f-cb5aa8d9b542
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https://doi.org/10.1051/0004-6361/201936042DOI
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https://research.chalmers.se/publication/514768URI
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Language:English
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Summary in:English
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Aims. We investigate the properties of the polarised radio population in the central 6.5 deg(2) of the XXL-South field observed at 2.1 GHz using the Australia Telescope Compact Array (ATCA) in 81 pointings with a synthesised beam of FWHM 5.2 ''. We also investigate the ATCA's susceptibility to polarisation leakage. Methods. We performed a survey of a 5.6 deg(2) subregion and calculated the number density of polarised sources. We derived the total and polarised spectral indices, in addition to comparing our source positions with those of X-ray-detected clusters. We measured the polarisation of sources in multiple pointings to examine leakage in the ATCA. Results. We find 39 polarised sources, involving 50 polarised source components, above a polarised flux density limit of 0.2 mJy at 1.332 GHz. The number density of polarised source components is comparable with recent surveys, although there is an indication of an excess at similar to 1 mJy. We find that those sources coincident with X-ray clusters are consistent in their properties with regard to the general population. In terms of the ATCA leakage response, we find that ATCA mosaics with beam separation of less than or similar to 2/3 of the primary beam FWHM have off-axis linear polarisation leakage less than or similar to 1.4% at 1.332 GHz.
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Birkinshaw, M.University of Bristol
(author)
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Smolcic, V.Sveučilište u Zagrebu,University of Zagreb
(author)
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Horellou, Cathy,1967Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)horellou
(author)
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Huynh, M.Commonwealth Scientific and Industrial Research Organisation (CSIRO),University of Western Australia
(author)
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Butler, A.University of Western Australia
(author)
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Delhaize, J.University of Cape Town
(author)
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Vignali, C.Universita di Bologna,University of Bologna,Istituto nazionale di astrofisica (INAF)
(author)
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Pierre, M.Paris Diderot University, France
(author)
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University Of LeicesterUniversity of Bristol
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In:Astronomy and Astrophysics: EDP Sciences6330004-63611432-0746
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Eyles, R. A. J.
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Birkinshaw, M.
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Smolcic, V.
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Horellou, Cathy, ...
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Huynh, M.
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Butler, A.
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Delhaize, J.
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Vignali, C.
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Pierre, M.
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