No large-angle correlations on the non-Galactic microwave sky
dc.contributor.author | Copi, Craig J. | en_US |
dc.contributor.author | Huterer, Dragan | en_US |
dc.contributor.author | Schwarz, Dominik J. | en_US |
dc.contributor.author | Starkman, Glenn D. | en_US |
dc.date.accessioned | 2010-06-01T18:30:28Z | |
dc.date.available | 2010-06-01T18:30:28Z | |
dc.date.issued | 2009-10-11 | en_US |
dc.identifier.citation | Copi, Craig J.; Huterer, Dragan; Schwarz, Dominik J.; Starkman, Glenn D. (2009). "No large-angle correlations on the non-Galactic microwave sky." Monthly Notices of the Royal Astronomical Society 399(1): 295-303. <http://hdl.handle.net/2027.42/71714> | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.issn | 1365-2966 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/71714 | |
dc.description.abstract | We investigate the angular two-point correlation function of temperature in the Wilkinson Microwave Anisotropy Probe ( WMAP) maps. Updating and extending earlier results, we confirm the lack of correlations outside the Galaxy on angular scales greater than about 60° at a level that would occur in 0.025 per cent of realizations of the concordance model. This represents a dramatic increase in significance from the original observations by the Cosmic Background Explorer Differential Microwave Radiometer ( COBE-DMR) and a marked increase in significance from the first-year WMAP maps. Given the rest of the reported angular power spectrum C ℓ , the lack of large-angle correlations that one infers outside the plane of the Galaxy requires covariance among the C ℓ up to ℓ= 5 . Alternately, it requires both the unusually small (5 per cent of realizations) full-sky large-angle correlations and an unusual coincidence of alignment of the Galaxy with the pattern of cosmological fluctuations (less than 2 per cent of those 5 per cent). We argue that unless there is some undiscovered systematic error in their collection or reduction, the data point towards a violation of statistical isotropy. The near-vanishing of the large-angle correlations in the cut-sky maps, together with their disagreement with results inferred from full-sky maps, remains open problems, and are very difficult to understand within the concordance model. | en_US |
dc.format.extent | 657054 bytes | |
dc.format.extent | 3109 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Blackwell Publishing Ltd | en_US |
dc.rights | Journal compilation © 2009 RAS | en_US |
dc.subject.other | Cosmic Microwave Background | en_US |
dc.title | No large-angle correlations on the non-Galactic microwave sky | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Astronomy | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Physics, University of Michigan, 450 Church St, Ann Arbor, MI 48109, USA | en_US |
dc.contributor.affiliationother | CERCA & Department of Physics, Case Western Reserve University, Cleveland, OH 44106-7079, USA | en_US |
dc.contributor.affiliationother | FakultÄt fÜr Physik, UniversitÄt Bielefeld, Postfach 100131, 33501 Bielefeld, Germany | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/71714/1/j.1365-2966.2009.15270.x.pdf | |
dc.identifier.doi | 10.1111/j.1365-2966.2009.15270.x | en_US |
dc.identifier.source | Monthly Notices of the Royal Astronomical Society | en_US |
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