Kamionkowski, Marc (2009) How to Derotate the Cosmic Microwave Background Polarization. Physical Review Letters, 102 (11). p. 111302. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:20090908-103552819
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If the linear polarization of the cosmic microwave background is rotated in a frequency-independent manner as it propagates from the surface of last scatter, it may introduce a B-mode polarization. Here I show that measurement of higher-order TE, EE, EB, and TB correlations induced by this rotation can be used to reconstruct the rotation angle as a function of position on the sky. This technique can be used to distinguish primordial B modes from those induced by rotation. The effects of rotation can be distinguished geometrically from similar effects due to cosmic shear.
|Additional Information:||© 2009 The American Physical Society. Received 7 October 2008; revised 12 February 2009; published 19 March 2009. I thank A. Cooray, C. Hirata, and V. Gluscevic for useful comments. This work was supported by DoE Grant No. DE-FG03-92-ER40701. PACS numbers: 98.70.Vc|
|Subject Keywords:||PACS: 98.70.Vc|
|Official Citation:||How to Derotate the Cosmic Microwave Background Polarization Marc Kamionkowski, Phys. Rev. Lett. 102, 111302 (2009), DOI:10.1103/PhysRevLett.102.111302|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||10 Sep 2009 15:57|
|Last Modified:||26 Dec 2012 11:20|
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