736 8 2859 1 8142 document 2859 kklr05.pdf application/pdf b4434a2c24e219006a773c792ce11651 MD5 384287 2014-01-27 21:30:13 http://eprints.iliauni.edu.ge/736/1/kklr05.pdf 736 1 1 application/pdf text en public

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http://eprints.org/relation/isVersionOf http://eprints.iliauni.edu.ge/id/document/2859 http://eprints.org/relation/isVolatileVersionOf http://eprints.iliauni.edu.ge/id/document/2859 http://eprints.org/relation/ismediumThumbnailVersionOf http://eprints.iliauni.edu.ge/id/document/2859 2869 2 8157 document 2869 small.jpg image/png 0204e706e7cd2dfa16d7857f8b1b0e69 MD5 1740 2014-01-27 21:40:41 http://eprints.iliauni.edu.ge/736/6/small.jpg 736 6 6 image/png other Thumbnails conversion from text to thumbnail_small ge public

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http://eprints.org/relation/isVersionOf http://eprints.iliauni.edu.ge/id/document/2859 http://eprints.org/relation/isVolatileVersionOf http://eprints.iliauni.edu.ge/id/document/2859 http://eprints.org/relation/issmallThumbnailVersionOf http://eprints.iliauni.edu.ge/id/document/2859 archive 131 disk0/00/00/07/36 2014-01-30 12:39:14 2015-03-27 06:58:01 2014-01-30 12:39:14 article show Kosowsky Arthur Kahniashvili Tina tinatin@iliauni.edu.ge Lavrelashvili George Ratra Bharat pub QB QC public A primordial cosmological magnetic field induces Faraday rotation of the cosmic microwave background polarization. This rotation produces a curl-type polarization component even when the unrotated polarization possesses only gradient-type polarization, as expected from scalar density perturbations. We compute the angular power spectrum of curl-type polarization arising from small Faraday rotation due to a weak stochastic primordial magnetic field with a power-law power spectrum. The induced polarization power spectrum peaks at arc minute angular scales. Faraday rotation is one of the few cosmological sources of curl-type polarization, along with primordial tensor perturbations, gravitational lensing, and the vector and tensor perturbations induced by magnetic fields; the Faraday rotation signal peaks on significantly smaller angular scales than any of these, with a power spectrum amplitude which can be comparable to that from gravitational lensing. Prospects for detection are briefly discussed. 2005 published Physical review D 71 043006 TRUE