Cluster detection in weak lensing surveys

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dc.creatorFeroz, F.
dc.creatorMarshall, P. J.
dc.creatorHobson, M. P.
dc.date2008-10-06
dc.date.accessioned2026-07-07T10:07:43Z
dc.date.available2026-07-07T10:07:43Z
dc.descriptionWe present an efficient and robust approach for extracting clusters of galaxies from weak lensing survey data and measuring their properties. We use simple, physically-motivated cluster models appropriate for such sparse, noisy data, and incorporate our knowledge of the cluster mass function to optimise the detection of low-mass objects. Despite the method's non-linear nature, we are able to search at a rate of approximately half a square degree per hour on a single processor, making this technique a viable candidate for future wide-field surveys. We quantify, for two simulated data-sets, the accuracy of recovered cluster parameters, and discuss the completeness and purity of our shear-selected cluster catalogues.
dc.description12 pages, 14 figures
dc.identifierhttps://arxiv.org/abs/0810.0781
dc.identifierhttp://arxiv.org/abs/0810.0781
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/170736
dc.subjectAstrophysics
dc.titleCluster detection in weak lensing surveys
dc.typetext

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