Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/19461
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Harrison, Ian | - |
dc.contributor.author | Brown, Michael L. | - |
dc.contributor.author | Tunbridge, Ben | - |
dc.contributor.author | Thomas, Daniel B. | - |
dc.contributor.author | Hillier, Tom | - |
dc.contributor.author | Thomson, A. P. | - |
dc.contributor.author | Whittaker, Lee | - |
dc.contributor.author | Abdalla, Filipe B. | - |
dc.contributor.author | Battye, Richard A. | - |
dc.contributor.author | Bonaldi, Anna | - |
dc.contributor.author | Camera, Stefano | - |
dc.contributor.author | Casey, Caitlin M. | - |
dc.contributor.author | Demetroullas, Constantinos | - |
dc.contributor.author | Hales, Christopher A. | - |
dc.contributor.author | Jackson, Neal J. | - |
dc.contributor.author | Kay, Scott T. | - |
dc.contributor.author | Manning, Sinclaire M. | - |
dc.contributor.author | Peters, Aaron | - |
dc.contributor.author | Riseley, Christopher J. | - |
dc.contributor.author | Watson, Robert A. | - |
dc.date.accessioned | 2020-11-24T14:31:22Z | - |
dc.date.available | 2020-11-24T14:31:22Z | - |
dc.date.issued | 2020-06 | - |
dc.identifier.citation | Monthly Notices of the Royal Astronomical Society, 2020, vol. 495, no. 2, pp. 1737-1759 | en_US |
dc.identifier.issn | 13652966 | - |
dc.identifier.uri | https://hdl.handle.net/20.500.14279/19461 | - |
dc.description.abstract | We describe the first results on weak gravitational lensing from the SuperCLASS survey: the first survey specifically designed to measure the weak lensing effect in radio-wavelength data, both alone and in cross-correlation with optical data. We analyse 1.53 deg(2) of optical data from the Subaru telescope and 0.26 deg(2) of radio data from the e-MERLIN and VLA telescopes (the DR1 data set). Using standard methodologies on the optical data only we make a significant (10 sigma) detection of the weak lensing signal (a shear power spectrum) due to the massive supercluster of galaxies in the targeted region. For the radio data we develop a new method to measure the shapes of galaxies from the interferometric data, and we construct a simulation pipeline to validate this method. We then apply this analysis to our radio observations, treating the e-MERLIN and VLA data independently. We achieve source densities of 0.5 arcmin(-2) in the VLA data and 0.06 arcmin(-2) in the e-MERLIN data, numbers which prove too small to allow a detection of a weak lensing signal in either the radio data alone or in cross-correlation with the optical data. Finally, we show preliminary results from a visibility-plane combination of the data from e-MERLIN and VLA which will be used for the forthcoming full SuperCLASS data release. This approach to data combination is expected to enhance both the number density of weak lensing sources available, and the fidelity with which their shapes can be measured. | en_US |
dc.format | en_US | |
dc.language.iso | en | en_US |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | en_US |
dc.rights | © The Author(s) | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Gravitational lensing: weak | en_US |
dc.subject | Dark matter | en_US |
dc.subject | Large-scale structure of Universe – cosmology: observations | en_US |
dc.subject | Radio continuum: galaxies | en_US |
dc.title | SuperCLASS - III. Weak lensing from radio and optical observations in Data Release 1 | en_US |
dc.type | Article | en_US |
dc.collaboration | The University of Manchester | en_US |
dc.collaboration | University of Oxford | en_US |
dc.collaboration | University College London | en_US |
dc.collaboration | Jodrell Bank Centre for Astrophysics | en_US |
dc.collaboration | University of Turin | en_US |
dc.collaboration | Istituto Nazionale di Fisica Nucleare | en_US |
dc.collaboration | University of Texas at Austin | en_US |
dc.collaboration | Cyprus University of Technology | en_US |
dc.collaboration | National Radio Astronomy Observatory | en_US |
dc.collaboration | Newcastle University | en_US |
dc.collaboration | University of Bologna | en_US |
dc.collaboration | Commonwealth Scientific & Industrial Research Organisation | en_US |
dc.subject.category | Physical Sciences | en_US |
dc.journals | Subscription | en_US |
dc.country | United Kingdom | en_US |
dc.country | Italy | en_US |
dc.country | USA | en_US |
dc.country | Cyprus | en_US |
dc.country | Australia | en_US |
dc.subject.field | Natural Sciences | en_US |
dc.publication | Peer Reviewed | en_US |
dc.identifier.doi | 10.1093/mnras/staa696 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.volume | 495 | en_US |
cut.common.academicyear | 2019-2020 | en_US |
dc.identifier.spage | 1737 | en_US |
dc.identifier.epage | 1759 | en_US |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.cerifentitytype | Publications | - |
item.openairetype | article | - |
crisitem.journal.journalissn | 1365-2966 | - |
crisitem.journal.publisher | Oxford University Press | - |
Appears in Collections: | Άρθρα/Articles |
Files in This Item:
File | Description | Size | Format | |
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staa696.pdf | Fulltext | 6.73 MB | Adobe PDF | View/Open |
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