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dc.contributor.authorDiego Rodríguez, José María
dc.contributor.authorCruz Rodríguez, Marcos 
dc.contributor.authorGonzález-Nuevo, Joaquín
dc.contributor.authorMaris, Michele
dc.contributor.authorAscasibar, Yago
dc.contributor.authorBurigana, Carlo
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2013-09-13T09:06:47Z
dc.date.available2013-09-13T09:06:47Z
dc.date.issued2010
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.urihttp://hdl.handle.net/10902/3259
dc.description.abstractWe report the detection of a high Galactic latitude, large-scale, 7σ signal in Wilkinson Microwave Anisotropy Probe (WMAP) 5-year data and spatially correlated with the ecliptic plane. Two possible candidates are studied, namely unresolved sources and Zodiacal light emission. We determine the strength of the Zodiacal light emission at WMAP frequencies and estimate the contribution from unresolved extragalactic sources. Neither the standard Zodiacal light emission nor the unresolved sources alone seem to be able to explain the observed signal. Other possible interpretations such as Galactic foregrounds and diffuse Sunyaev–Zel'dovich effect also seem unlikely. We check if our findings could affect the low-ℓ anomalies which have been reported in the WMAP data. Neither Zodiacal light emission nor unresolved point-source residuals seem to affect significantly the quadrupole and octupole measurements. However, a signal with a quasi-blackbody spectrum and with a spatial distribution similar to the Zodiacal light emission could explain both the anomalous signal and the low-ℓ anomalies. Future data (Planck) will be needed in order to explain the origin of this signal.es_ES
dc.format.extent8 p.es_ES
dc.language.isoenges_ES
dc.publisherOxford University Presses_ES
dc.publisherRoyal Astronomical Societyes_ES
dc.rights© 2009 The Authors. Journal compilation © 2009 RASes_ES
dc.sourceMonthly Notices of the RAS Vol. 402, Iss. 2, pp. 1213-1220es_ES
dc.subject.otherGalaxy: generales_ES
dc.subject.otherCosmic microwave backgroundes_ES
dc.subject.otherInfrared: Solar system.es_ES
dc.titleAn anomalous Wilkinson Microwave Anisotropy Probe signal in the ecliptic planees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttp://dx.doi.org/10.1111/j.1365-2966.2009.15958.xes_ES
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1111/j.1365-2966.2009.15958.x
dc.type.versionpublishedVersiones_ES


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