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Earlier papers introduced a method of accurately estimating the angular cosmic microwave background (CMB) temperature power spectrum based on Gibbs sampling. Here we extend this framework to polarized data. All advantages of the Gibbs…

We compare the performance of multiple codes written by different groups for making polarized maps from Planck-sized, all-sky cosmic microwave background (CMB) data. Three of the codes are based on a destriping algorithm; the other three…

We describe the calibration and data processing methods used to generate full-sky maps of the cosmic microwave background (CMB) from the first year of Wilkinson Microwave Anisotropy Probe (WMAP) observations. Detailed limits on residual…

Astrophysical foreground substraction is crucial to retrieve the cosmic microwave background (CMB) polarization out of the observed data. Recent efforts have been carried out towards the development of a minimally informed component…

Cosmology and Nongalactic Astrophysics · Physics 2025-07-08 Clément Leloup , Magdy Morshed , Arianna Rizzieri

The statistical expectation values of the temperature fluctuations and polarization of cosmic microwave background (CMB) are assumed to be preserved under rotations of the sky. We investigate the statistical isotropy (SI) of the CMB maps…

Astrophysics · Physics 2009-11-11 Tarun Souradeep , Amir Hajian , Soumen Basak

Recovering the Cosmic Microwave Background (CMB) from WMAP data requires galactic foreground emissions to be accurately separated out. Most component separation techniques rely on second order statistics such as Internal Linear Combination…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 J. Bobin , F. Sureau , P. Paykari , A. Rassat , S. Basak , J. -L. Starck

We study a strategy to determine miscalibrated polarization angles of cosmic microwave background (CMB) experiments using the observed $EB$ polarization power spectra of CMB and Galactic foreground emission. We apply the methodology of…

Cosmology and Nongalactic Astrophysics · Physics 2020-06-30 Yuto Minami

Cosmic microwave background (CMB) photons are deflected by large-scale structure through gravitational lensing. This secondary effect introduces higher-order correlations in CMB anisotropies, which are used to reconstruct lensing…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-26 M. Ruiz-Granda , P. Diego-Palazuelos , C. Gimeno-Amo , P. Vielva , A. I. Lonappan , T. Namikawa , R. T. Génova-Santos , M. Lembo , R. Nagata , M. Remazeilles , D. Adak , E. Allys , A. Anand , J. Aumont , C. Baccigalupi , M. Ballardini , A. J. Banday , R. B. Barreiro , N. Bartolo , S. Basak , M. Bersanelli , A. Besnard , D. Blinov , M. Bortolami , F. Bouchet , T. Brinckmann , F. Cacciotti , E. Calabrese , P. Campeti , A. Carones , F. J. Casas , K. Cheung , M. Citran , L. Clermont , F. Columbro , A. Coppolecchia , P. de Bernardis , T. de Haan , E. de la Hoz , M. De Lucia , S. Della Torre , E. Di Giorgi , H. K. Eriksen , F. Finelli , C. Franceschet , U. Fuskeland , G. Galloni , M. Galloway , M. Gervasi , T. Ghigna , S. Giardiello , A. Gruppuso , M. Hazumi , L. T. Hergt , E. Hivon , K. Ichiki , H. Jiang , B. Jost , K. Kohri , L. Lamagna , M. Lattanzi , C. Leloup , F. Levrier , M. López-Caniego , G. Luzzi , J. Macias-Perez , V. Maranchery , E. Martínez-González , S. Masi , S. Matarrese , T. Matsumura , S. Micheli , M. Monelli , L. Montier , G. Morgante , M. Najafi , A. Novelli , F. Noviello , I. Obata , A. Occhiuzzi , A. Paiella , D. Paoletti , G. Pascual-Cisneros , F. Piacentini , G. Piccirilli , G. Polenta , L. Porcelli , N. Raffuzzi , A. Rizzieri , J. A. Rubiño-Martín , Y. Sakurai , J. Sanghavi , D. Scott , M. Shiraishi , G. Signorelli , R. M. Sullivan , Y. Takase , L. Terenzi , M. Tomasi , M. Tristram , L. Vacher , B. van Tent , I. K. Wehus , G. Weymann-Despres , Y. Zhou

The lack of power anomaly is an unexpected feature observed at large angular scales in the CMB maps produced by the COBE, WMAP and Planck satellites. This signature, which consists in a missing of power with respect to that predicted by the…

Cosmology and Nongalactic Astrophysics · Physics 2024-08-20 M. Billi , R. B. Barreiro , E. Martínez-González

The lack of power anomaly is an intriguing feature at the largest angular scales of the CMB anisotropy temperature pattern, whose statistical significance is not strong enough to claim any new physics beyond the standard cosmological model.…

Cosmology and Nongalactic Astrophysics · Physics 2019-06-11 M. Billi , A. Gruppuso , N. Mandolesi , L. Moscardini , P. Natoli

We present a cross-spectra based approach for the analysis of CMB data at large angular scales to constrain the reionization optical depth $\tau$, the tensor to scalar ratio $r$ and the amplitude of the primordial scalar perturbations…

Cosmology and Nongalactic Astrophysics · Physics 2015-09-08 A. Mangilli , S. Plaszczynski , M. Tristram

One of the main goals of most future CMB experiments is the precise measurement of CMB B-mode polarization, whose major obstacle is the Galactic foregrounds. In this paper, we evaluate the foreground cleaning performance of the variants of…

Cosmology and Nongalactic Astrophysics · Physics 2024-05-24 Jiazheng Dou , Shamik Ghosh , Larissa Santos , Wen Zhao

Observations of the Cosmic Microwave Background (CMB) radiation have made significant contributions to our understanding of cosmology. While temperature observations of the CMB have greatly advanced our knowledge, the next frontier lies in…

Cosmology and Nongalactic Astrophysics · Physics 2024-11-05 Sarvesh Kumar Yadav

We examine the statistical properties of polarization maps from Planck 2018 within the patch of sky observed by the BICEP2/Keck experiment using the one point distribution function (1PDF), skewness, and kurtosis statistics. Our analysis is…

Cosmology and Nongalactic Astrophysics · Physics 2020-06-17 Hao Liu , James Creswell , Pavel Naselsky

We characterize the Cosmic Infrared Background (CIB)-lensing bispectrum which is one of the contributions to the three-point functions of Cosmic Microwave Background (CMB) maps in harmonic space. We show that the CIB-lensing bispectrum has…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 A. Curto , M. Tucci , M. Kunz , E. Martinez-Gonzalez

The Wilkinson Microwave Anisotropy Probe WMAP has mapped the entire sky in five frequency bands between 23 and 94 GHz with polarization sensitive radiometers. We present three-year full-sky maps of the polarization and analyze them for…

We report here the first full sky component separation and CMB power spectrum estimation using a Wiener filtering technique on simulated data from the upcoming MAP experiment, set to launch in early 2001. The simulations included…

Astrophysics · Physics 2009-10-31 S. Prunet , R. Teyssier , S. T. Scully , F. R. Bouchet , R. Gispert

We apply a previously developed Gibbs sampling framework to the foreground corrected 3-yr WMAP polarization data and compute the power spectrum and residual foreground template amplitude posterior distributions. We first analyze the…

We present a new estimate of foreground emission in the WMAP data, using a Markov chain Monte Carlo (MCMC) method. The new technique delivers maps of each foreground component for a variety of foreground models, error estimates of the…

We present a new model of the microwave sky in polarization that can be used to simulate data from CMB polarization experiments. We exploit the most recent results from the Planck satellite to provide an accurate description of the diffuse…

Cosmology and Nongalactic Astrophysics · Physics 2016-08-31 Carlos Hervías-Caimapo , Anna Bonaldi , Michael L. Brown