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Fast and precise map-making for massively multi-detector CMB experiments
D. Sutton, J. A. Zuntz, P. G. Ferreira +6
Future cosmic microwave background (CMB) polarisation experiments aim to measure an unprecedentedly small signal - the primordial gravity wave component of the polarisation field B…
Bayesian analysis of an anisotropic universe model: systematics and polarization
Nicolaas E. Groeneboom, Lotty Ackerman, Ingunn Kathrine Wehus +1
We revisit the anisotropic universe model previously developed by Ackerman, Carroll and Wise (ACW), and generalize both the theoretical and computational framework to include polar…
Frequentist comparison of CMB local extrema statistics in the five-year WMAP data with two anisotropic cosmological models
Zhen Hou, A. J. Banday, K. M. Gorski +2
We present local extrema studies of two models that introduce a preferred direction into the observed cosmic microwave background (CMB) temperature field. In particular, we make a…
The two-and three-point correlation functions of the polarized five-year WMAP sky maps
E. Gjerløw, H. K. Eriksen, A. J. Banday +2
We present the two- and three-point real space correlation functions of the five-year WMAP sky maps, and compare the observed functions to simulated LCDM concordance model ensemble…
Residual noise covariance for Planck low-resolution data analysis
R. Keskitalo, M. A. J. Ashdown, P. Cabella +22
Aims: Develop and validate tools to estimate residual noise covariance in Planck frequency maps. Quantify signal error effects and compare different techniques to produce low-resol…
Increasing evidence for hemispherical power asymmetry in the five-year WMAP data
J. Hoftuft, H. K. Eriksen, A. J. Banday +3
(Abridged)Motivated by the recent results of Hansen et al. (2008) concerning a noticeable hemispherical power asymmetry in the WMAP data on small angular scales, we revisit the dip…