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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1182
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dc.contributor.authorGopal, Rajesh-
dc.contributor.authorSethi, S.K.-
dc.date.accessioned2006-05-11T10:25:29Z-
dc.date.available2006-05-11T10:25:29Z-
dc.date.issued2005-11-17-
dc.identifier.citationPhysical Review D, 2005, Vol.72, 103003en
dc.identifier.issn0031-9007-
dc.identifier.issn1079-7114 (online)-
dc.identifier.urihttp://hdl.handle.net/2289/1182-
dc.description.abstractWe compute the secondary cosmic microwave background radiation (CMBR) anisotropy signal from the reionization of the Universe in the presence of tangled magnetic fields. We consider the tangled-magnetic-field-induced scalar, vector, and tensor modes for our analysis. The most interesting signal for [script-l]<~100 arises from tensor perturbations. In particular, we show that the enhancement observed by Wilkinson microwave anisotropy probe (WMAP) in the TE cross-correlation signal for [script-l]<~10 could be explained by tensor TE cross correlation from tangled magnetic fields generated during the inflationary epoch for magnetic field strength B0~=4.5×10-9 G and magnetic field power spectrum spectral index n~=-2.9. Alternatively, a mixture of tensor mode signal with primordial scalar modes gives weaker bounds on the value of the optical depth to the reionization surface, taureion: taureion=0.11±0.02. This analysis can also be translated to a limit on magnetic field strength of ~=5×10-9 G for wave numbers <~0.05 Mpc-1.en
dc.format.extent320242 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.urihttp://link.aps.org/abstract/PRD/v72/e103003en
dc.rights(2005) by the American Physical Societyen
dc.titleTangled magnetic fields and CMBR signal from reionization epochen
dc.typeArticleen
Appears in Collections:Research Papers (A&A)

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