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Constraints on the topology of the Universe derived from the 7-year WMAP data
P. Bielewicz, A. J. Banday
We impose constraints on the topology of the Universe determined from a search for matched circles in the temperature anisotropy patterns of the 7-year WMAP data. We pay special at…
Scale-dependent non-Gaussianities in the WMAP data as identified by using surrogates and scaling indices
C. Raeth, A. J. Banday, G. Rossmanith +5
We present a model-independent investigation of the WMAP data with respect to scale- dependent non-Gaussianities (NGs) by employing the method of constrained randomization. For gen…
The primordial non-Gaussianity of local type (f_NL) in the WMAP 5-year data: the length distribution of CMB skeleton
Zhen Hou, A. J. Banday, Krzysztof M. Gorski +2
We present skeleton studies of non-Gaussianity in the CMB temperature anisotropy observed in the WMAP5 data. The local skeleton is traced on the 2D sphere by cubic spline interpola…
Probing non-Gaussianities on Large Scales in WMAP5 and WMAP7 Data using Surrogates
C. Raeth, G. Rossmanith, G. Morfill +2
Probing Gaussianity represents one of the key questions in modern cosmology, because it allows to discriminate between different models of inflation. We test for large-scale non-Ga…
Joint 3D modelling of the polarized Galactic synchrotron and thermal dust foreground diffuse emission
L. Fauvet, J. F. Macías-Pérez, J. Aumont +6
We present for the first time a coherent model of the polarized Galactic synchrotron and thermal dust emissions which are the main diffuse foreground for the measurement of the pol…
Planck pre-launch status: Design and description of the Low Frequency Instrument
M. Bersanelli, N. Mandolesi, R. C. Butler +109
In this paper we present the Low Frequency Instrument (LFI), designed and developed as part of the Planck space mission, the ESA program dedicated to precision imaging of the cosmi…