dc.creatorDavid Hughes
dc.date2010
dc.date.accessioned2023-07-25T16:23:48Z
dc.date.available2023-07-25T16:23:48Z
dc.identifierhttp://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1512
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7806707
dc.descriptionThe Atacama Cosmology Telescope (ACT) is currently observing the cosmic microwave background with arcminute resolution at 148 GHz, 218 GHz, and 277 GHz, In this paper, we present ACT's first results. Data have been analyzed using a maximum-likelihood map-making method which uses B-splines to model and remove the atmospheric signal. It has been used to make high-precision beam maps from which we determine the experiment's window functions, This beam information directly impacts all subsequent analyses of the data. We also used the method to map a sample of galaxy clusters via the Sunyaev-Ze1'dovich (SZ) effect, and show five clusters previously detected with X-ray or SZ observations, We provide integrated Compton-y measurements for each cluster. Of particular interest is our detection of the z = 0.44 component of A3128 and our current non-detection of the low-redshift part, providing strong evidence that the further cluster is more massive as suggested by X-ray measurements. This is a compelling example of the redshift-independent mass selection of the SZ effect.
dc.formatapplication/pdf
dc.languageeng
dc.publisherThe Astrophysical Journal Supplement Series
dc.relationcitation:Hincks, A. D., et al., (2010), The atacama cosmology telescope (ACT): Beam profiles and first SZ cluster maps, The Astrophysical Journal Supplement Series, Vol. 191(2): 423-438
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subjectinfo:eu-repo/classification/Inspec/Cosmic background radiation
dc.subjectinfo:eu-repo/classification/Inspec/Cosmology: observations
dc.subjectinfo:eu-repo/classification/Inspec/Galaxies: clusters: general
dc.subjectinfo:eu-repo/classification/Inspec/Methods:data analysis
dc.subjectinfo:eu-repo/classification/cti/1
dc.subjectinfo:eu-repo/classification/cti/21
dc.subjectinfo:eu-repo/classification/cti/21
dc.titleThe atacama cosmology telescope (ACT): Beam profiles and first SZ cluster maps
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/acceptedVersion
dc.audiencestudents
dc.audienceresearchers
dc.audiencegeneralPublic


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