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

doi:10.1086/324222

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

Research output: Contribution to journal › Article › peer-review

Abstract

We present an upper limit on the polarization of the cosmic microwave background (CMB) at 7 ° angular scales in the frequency band between 26 and 36 GHz, produced by the Polarization Observations of Large Angular Regions experiment. The campaign produced a map of linear polarization over the right ascension range 112 °-275 ° at declination 43 °. The model-independent upper limit on the E-mode polarization component of the CMB at angular scales l = 2-20 is 10 μK (95% confidence). The corresponding limit for the B-mode is also 10 μK. Constraining the B-mode power to be zero, the 95% confidence limit on E-mode power alone is 8 μK.

Original language	English
Pages (from-to)	-L4
Journal	Astrophysical Journal
Volume	560
Issue number	1
DOIs	https://doi.org/10.1086/324222
Publication status	Published - 10 Oct 2001

Keywords

Cosmic microwave background
Cosmology: observations
Polarization

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10.1086/324222

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title = "A limit on the large angular scale polarization of the cosmic microwave background",

abstract = "We present an upper limit on the polarization of the cosmic microwave background (CMB) at 7 ° angular scales in the frequency band between 26 and 36 GHz, produced by the Polarization Observations of Large Angular Regions experiment. The campaign produced a map of linear polarization over the right ascension range 112 °-275 ° at declination 43 °. The model-independent upper limit on the E-mode polarization component of the CMB at angular scales l = 2-20 is 10 μK (95% confidence). The corresponding limit for the B-mode is also 10 μK. Constraining the B-mode power to be zero, the 95% confidence limit on E-mode power alone is 8 μK.",

keywords = "Cosmic microwave background, Cosmology: observations, Polarization",

author = "Keating, {Brian G.} and O'Dell, {Christopher W.} and {De Oliveira-Costa}, Angelica and Slade Klawikowski and Nate Stebor and Lucio Piccirillo and Max Tegmark and Timbie, {Peter T.}",

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TY - JOUR

T1 - A limit on the large angular scale polarization of the cosmic microwave background

AU - Keating, Brian G.

AU - O'Dell, Christopher W.

AU - De Oliveira-Costa, Angelica

AU - Klawikowski, Slade

AU - Stebor, Nate

AU - Piccirillo, Lucio

AU - Tegmark, Max

AU - Timbie, Peter T.

PY - 2001/10/10

Y1 - 2001/10/10

N2 - We present an upper limit on the polarization of the cosmic microwave background (CMB) at 7 ° angular scales in the frequency band between 26 and 36 GHz, produced by the Polarization Observations of Large Angular Regions experiment. The campaign produced a map of linear polarization over the right ascension range 112 °-275 ° at declination 43 °. The model-independent upper limit on the E-mode polarization component of the CMB at angular scales l = 2-20 is 10 μK (95% confidence). The corresponding limit for the B-mode is also 10 μK. Constraining the B-mode power to be zero, the 95% confidence limit on E-mode power alone is 8 μK.

AB - We present an upper limit on the polarization of the cosmic microwave background (CMB) at 7 ° angular scales in the frequency band between 26 and 36 GHz, produced by the Polarization Observations of Large Angular Regions experiment. The campaign produced a map of linear polarization over the right ascension range 112 °-275 ° at declination 43 °. The model-independent upper limit on the E-mode polarization component of the CMB at angular scales l = 2-20 is 10 μK (95% confidence). The corresponding limit for the B-mode is also 10 μK. Constraining the B-mode power to be zero, the 95% confidence limit on E-mode power alone is 8 μK.

KW - Cosmic microwave background

KW - Cosmology: observations

KW - Polarization

U2 - 10.1086/324222

DO - 10.1086/324222

M3 - Article

SN - 1538-4357

VL - 560

SP - -L4

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

A limit on the large angular scale polarization of the cosmic microwave background

Abstract

Keywords

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