Measurements of Sub-degree B-mode Polarization in the Cosmic Microwave Background from 100 Square Degrees of SPTpol Data

Abstract

We present a measurement of the $B$-mode polarization power spectrum (the $BB$ spectrum) from 100 ${\mathrm{deg}}^2$ of sky observed with SPTpol, a polarization-sensitive receiver currently installed on the South Pole Telescope. The observations used in this work were taken during 2012 and early 2013 and include data in spectral bands centered at 95 and 150 GHz. We report the $BB$ spectrum in five bins in multipole space, spanning the range $300\le \ell \le 2300$, and for three spectral combinations: 95 GHz $\times$ 95 GHz, 95 GHz $\times$ 150 GHz, and 150 GHz $\times$ 150 GHz. We subtract small ($<0.5\sigma$ in units of statistical uncertainty) biases from these spectra and account for the uncertainty in those biases. The resulting power spectra are inconsistent with zero power but consistent with predictions for the $BB$ spectrum arising from the gravitational lensing of $E$-mode polarization. If we assume no other source of $BB$ power besides lensed $B$ modes, we determine a preference for lensed $B$ modes of $4.9\sigma$. After marginalizing over tensor power and foregrounds, namely polarized emission from galactic dust and extragalactic sources, this significance is $4.3\sigma$. Fitting for a single parameter, $A_{\mathrm{lens}}$, that multiplies the predicted lensed $B$-mode spectrum, and marginalizing over tensor power and foregrounds, we find $A_{\mathrm{lens}}=1.08\pm 0.26$, indicating that our measured spectra are consistent with the signal expected from gravitational lensing. The data presented here provide the best measurement to date of the $B$-mode power spectrum on these angular scales.

arXiv comment21 pages, 4 figures

References in corpus (44)

• Planck 2013 results. XVI. Cosmological parameters
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• Efficient Computation of CMB anisotropies in closed FRW models
• Cosmological parameters from CMB and other data: a Monte-Carlo approach
• The Herschel-SPIRE instrument and its in-flight performance
• BICEP2 I: Detection Of B-mode Polarization at Degree Angular Scales
• Statistics of Cosmic Microwave Background Polarization
• Signature of Gravity Waves in Polarization of the Microwave Background
• Cosmic Microwave Background Anisotropies
• MASTER of the CMB Anisotropy Power Spectrum: A Fast Method for Statistical Analysis of Large and Complex CMB Data Sets
• The 10 Meter South Pole Telescope
• Gravitational Lensing Effect on Cosmic Microwave Background Polarization
• A CMB Polarization Primer
• A Measurement of the Cosmic Microwave Background Damping Tail from the 2500-square-degree SPT-SZ survey
• Detection of B-mode Polarization in the Cosmic Microwave Background with Data from the South Pole Telescope
• A limit on the detectability of the energy scale of inflation
• A Measurement of the Cosmic Microwave Background B-Mode Polarization Power Spectrum at Sub-Degree Scales with POLARBEAR
• Radio and Millimeter Continuum Surveys and their Astrophysical Implications
• Neutrino Physics from the Cosmic Microwave Background and Large Scale Structure
• Astrophysical and Cosmological Information from Large-scale sub-mm Surveys of Extragalactic Sources
• Separation of Gravitational-Wave and Cosmic-Shear Contributions to Cosmic Microwave Background Polarization
• ACTPol: A polarization-sensitive receiver for the Atacama Cosmology Telescope
• Inflation Physics from the Cosmic Microwave Background and Large Scale Structure
• Measurement of the Cosmic Microwave Background Polarization Lensing Power Spectrum with the POLARBEAR experiment
• The Atacama Cosmology Telescope: CMB Polarization at $200<\ell <9000$
• SPTpol: an instrument for CMB polarization measurements with the South Pole Telescope
• Second and third season QUaD CMB temperature and polarization power spectra
• Measuring Dark Matter Power Spectrum from Cosmic Microwave Background
• The First Public Release of South Pole Telescope Data: Maps of a 95-square-degree Field from 2008 Observations
• Evidence for Gravitational Lensing of the Cosmic Microwave Background Polarization from Cross-correlation with the Cosmic Infrared Background
• Improved constraints on cosmic microwave background secondary anisotropies from the complete 2008 South Pole Telescope data
• A CMB lensing mass map and its correlation with the cosmic infrared background
• A general solution to the E-B mixing problem
• The nature of the E-B decomposition of CMB polarization
• Unbiased Estimation of an Angular Power Spectrum
• Non-Gaussian structure of the lensed CMB power spectra covariance matrix
• Measurements of E-Mode Polarization and Temperature-E-Mode Correlation in the Cosmic Microwave Background from 100 Square Degrees of SPTpol Data
• Statistical properties of polarized radio sources at high frequency and their impact on CMB polarization measurements
• An upper limit to polarized submillimetre emission in Arp 220
• Instrumental and Analytic Methods for Bolometric Polarimetry
• Optimised polarimeter configurations for measuring the Stokes parameters of the Cosmic Microwave Background Radiation
• Feedhorn-coupled TES polarimeter camera modules at 150 GHz for CMB polarization measurements with SPTpol
• An improved upper limit to the CMB circular polarization at large angular scales
• Design and characterization of 90 GHz feedhorn-coupled TES polarimeter pixels in the SPTpol camera

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