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Article overview
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A Limit on the Large Angular Scale Polarization of the Cosmic Microwave Background | Brian G. Keating
; Christopher W. O’Dell
; Angelica de Oliveira-Costa
; Slade Klawikowski
; Nate Stebor
; Lucio Piccirillo
; Max Tegmark
; Peter T. Timbie
; | Date: |
3 Jul 2001 | Journal: | ApJ Letters: (2001), Vol 560, L1 | Subject: | astro-ph | Affiliation: | Caltech, University of Wisconsin, Madison, University of Pennsylvania, UCSB, University of Wales, Cardiff | Abstract: | We present an upper limit on the polarization of the Cosmic Microwave Background at 7 degree angular scales in the frequency band between 26 and 36 GHz, produced by the POLAR experiment. The campaign produced a map of linear polarization over the R.A. range 112 degrees - 275 degrees at declination 43degrees. The model-independent upper limit on the E-mode polarization component of the CMB at angular scales l = 2 - 20 is 10 microKelvin (95% confidence). The corresponding limit for the B-mode is also 10 microKelvin. Constraining the B-mode power to be zero, the 95% confidence limit on E-mode power alone is 8 microKelvin. | Source: | arXiv, astro-ph/0107013 | Services: | Forum | Review | PDF | Favorites |
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