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dc.contributor.authorKamionkowski, Marc
dc.contributor.authorLoeb, Abraham
dc.date.accessioned2019-09-27T13:15:18Z
dc.date.issued1997
dc.identifier.citationKamionkowski, Marc, and Abraham Loeb. 1997. “Getting around Cosmic Variance.” Physical Review D 56 (8): 4511–13. https://doi.org/10.1103/physrevd.56.4511.
dc.identifier.issn1550-2368
dc.identifier.issn1550-7998
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41417255*
dc.description.abstractCosmic microwave background (CMB) anisotropies probe the primordial density field at the edge of the observable Universe. There is a limiting precision (''cosmic variance'') with which anisotropies can determine the amplitude of primordial mass fluctuations. This arises because the surface of last scatter (SLS) probes only a finite two-dimensional slice of the Universe. Probing other SLS's observed from different locations in the Universe would reduce the cosmic variance. In particular, the polarization of CMB photons scattered by the electron gas in a cluster of galaxies provides a measurement of the CMB quadrupole moment seen by the cluster. Therefore, CMB polarization measurements toward many clusters would probe the anisotropy on a variety of SLS's within the observable Universe, and hence reduce the cosmic-variance uncertainty. [S0556-2821(97)04820-0].
dc.language.isoen_US
dc.publisherAmerican Physical Society
dash.licenseLAA
dc.titleGetting around cosmic variance
dc.typeJournal Article
dc.description.versionVersion of Record
dc.relation.journalPhysical Review D - Particles, Fields, Gravitation, and Cosmology
dash.depositing.authorLoeb, Abraham::e022a3952362350ac8a0138f128a8be7::600
dc.date.available2019-09-27T13:15:18Z
dash.workflow.comments1Science Serial ID 76904
dc.identifier.doi10.1103/PhysRevD.56.4511
dash.source.volume56;8
dash.source.page4511-4513


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