MURAL - Maynooth University Research Archive Library

    Beam mismatch effects in cosmic microwave background polarization measurements

    Rosset, C. and Yurchenko, V. and Delabrouille, J. and Kaplan, J. and Giraud-Héraud, Y. and Lamarre, J.-M. and Murphy, J.Anthony (2007) Beam mismatch effects in cosmic microwave background polarization measurements. Astronomy & Astrophysics, 464 (1). pp. 405-415. ISSN 0004-6361

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    Measurement of cosmic microwave background polarization is today a major goal of observational cosmology. The level of the signal to measure, however, makes it very sensitive to various systematic effects. In the case of Planck, which measures polarization by combining data from various detectors, the beam asymmetry can induce a conversion of temperature signals to polarization signals or a polarization mode mixing. In this paper, we investigate this effect using realistic simulated beams and propose a first-order method to correct the polarization power spectra for the induced systematic effect.

    Item Type: Article
    Keywords: cosmology; cosmic microwave background; polarization;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 14136
    Identification Number:
    Depositing User: Dr. Anthony Murphy
    Date Deposited: 05 Mar 2021 16:26
    Journal or Publication Title: Astronomy & Astrophysics
    Publisher: EDP Sciences
    Refereed: Yes

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