Large Angular Scale Polarization of the Cosmic Microwave Background Radiation and the Feasibility of Its Detection | Zendy

Brian Keating | Zendy; Peter Timbie | Zendy; A. G. Polnarev | Zendy; J. Steinberger | Zendy

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Large Angular Scale Polarization of the Cosmic Microwave Background Radiation and the Feasibility of Its Detection

Author(s) -

Brian Keating,

Peter Timbie,

A. G. Polnarev,

J. Steinberger

Publication year - 1998

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/305312

Subject(s) - cosmic microwave background , physics , polarization (electrochemistry) , anisotropy , cosmic background radiation , spectral density , astrophysics , radiation , microwave , background radiation , computational physics , optics , computer science , chemistry , quantum mechanics , telecommunications

In addition to its spectrum and temperature anisotropy, the 2.7K CosmicMicrowave Background is also expected to exhibit a low level of polarization.The spatial power spectrum of the polarization can provide details about theformation of structure in the universe as well as its ionization history. Herewe calculate the magnitude of the CMB polarization in various cosmologicalscenarios, with both an analytic and a numerical method. We then outline thefundemental challenges to measuring these signals and focus on two of them:achieving adequate sensitivity and removing contamination from foregroundsources. We then describe the design of a ground based instrument (POLAR) thatcould detect polarization of the CMB at large angular scales in the new fewyears.Comment: 40 pages, 7 figures, accepted for publication in the Astrophysical Journa

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