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dc.contributor.authorWang, L.
dc.contributor.authorCooray, A.
dc.contributor.authorFarrah, D.
dc.contributor.authorAmblard, A.
dc.contributor.authorAuld, R.
dc.contributor.authorBock, J.
dc.contributor.authorBrisbin, D.
dc.contributor.authorBurgarella, D.
dc.contributor.authorChanial, P.
dc.contributor.authorClements, D.
dc.contributor.authorEales, S.
dc.contributor.authorFranceschini, A.
dc.contributor.authorGlenn, J.
dc.contributor.authorGong, Y.
dc.contributor.authorGriffin, M.
dc.contributor.authorHeinis, S.
dc.contributor.authorIbar, E.
dc.contributor.authorIvison, R.
dc.contributor.authorMortier, A.
dc.contributor.authorOliver, S.
dc.contributor.authorPage, M.
dc.contributor.authorPapageorgiou, A.
dc.contributor.authorPearson, C.
dc.contributor.authorPérez-Fournon, I.
dc.contributor.authorPohlen, M.
dc.contributor.authorRawlings, J.
dc.contributor.authorRaymond, G.
dc.contributor.authorRodighiero, G.
dc.contributor.authorRoseboom, I.
dc.contributor.authorRowan-Robinson, M.
dc.contributor.authorScott, D.
dc.contributor.authorSerra, P.
dc.contributor.authorSeymour, Nick
dc.contributor.authorSmith, A.
dc.contributor.authorSymeonidis, M.
dc.contributor.authorTugwell, K.
dc.contributor.authorVaccari, M.
dc.contributor.authorVieira, J.
dc.contributor.authorVigroux, L.
dc.contributor.authorWright, G.
dc.date.accessioned2017-01-30T11:40:56Z
dc.date.available2017-01-30T11:40:56Z
dc.date.created2016-01-18T20:00:46Z
dc.date.issued2011
dc.identifier.citationWang, L. and Cooray, A. and Farrah, D. and Amblard, A. and Auld, R. and Bock, J. and Brisbin, D. et al. 2011. HerMES: Detection of cosmic magnification of submillimetre galaxies using angular cross-correlation. Monthly Notices of the Royal Astronomical Society. 414 (1): pp. 596-601.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/14028
dc.identifier.doi10.1111/j.1365-2966.2011.18417.x
dc.description.abstract

Cosmic magnification is due to the weak gravitational lensing of sources in the distant Universe by foreground large-scale structure leading to coherent changes in the observed number density of the background sources. Depending on the slope of the background source number counts, cosmic magnification causes a correlation between the background and foreground galaxies, which is unexpected in the absence of lensing if the two populations are spatially disjoint. Previous attempts using submillimetre (submm) sources have been hampered by small number statistics. The large number of sources detected in the Herschel Multi-tiered Extra-galactic Survey (HerMES) Lockman-Spitzer Wide-area Infrared Extragalactic (SWIRE) field enables us to carry out the first robust study of the cross-correlation between submm sources and sources at lower redshifts. Using ancillary data, we compile two low-redshift samples from Sloan Digital Sky Survey (SDSS) and SWIRE with 〈z〉~ 0.2 and 0.4, respectively, and cross-correlate with two submm samples based on flux density and colour criteria, selecting galaxies preferentially at z∼ 2. We detect cross-correlation on angular scales between ~1 and 50 arcmin and find clear evidence that this is primarily due to cosmic magnification. A small, but non-negligible signal from intrinsic clustering is likely to be present due to the tails of the redshift distribution of the submm sources overlapping with those of the foreground samples.

dc.titleHerMES: Detection of cosmic magnification of submillimetre galaxies using angular cross-correlation
dc.typeJournal Article
dcterms.source.volume414
dcterms.source.number1
dcterms.source.startPage596
dcterms.source.endPage601
dcterms.source.issn0035-8711
dcterms.source.titleMonthly Notices of the Royal Astronomical Society
curtin.note

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2011 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

curtin.departmentDepartment of Physics and Astronomy
curtin.accessStatusOpen access


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