A Caltech Library Service

How to Derotate the Cosmic Microwave Background Polarization

Kamionkowski, Marc (2009) How to Derotate the Cosmic Microwave Background Polarization. Physical Review Letters, 102 (11). p. 111302. ISSN 0031-9007.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


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.

Item Type:Article
Related URLs:
URLURL TypeDescription
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
Funding AgencyGrant Number
Department of EnergyDE-FG03-92-ER40701
Subject Keywords:PACS: 98.70.Vc
Record Number:CaltechAUTHORS:20090908-103552819
Persistent URL:
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.
ID Code:15670
Deposited By: Ruth Sustaita
Deposited On:10 Sep 2009 15:57
Last Modified:26 Dec 2012 11:20

Repository Staff Only: item control page