Cosmic Parallax as a probe of late time anisotropic expansion (2009)
Quercellini, Claudia, Cabella, Paolo, Amendola, Luca, Quartin, Miguel, Balbi, Amedeo
Cosmic parallax is the change of angular separation between pair of sources at cosmological distances induced by an anisotropic expansion. An accurate astrometric experiment like Gaia could observe...
Needlet Bispectrum Asymmetries in the WMAP 5-year Data (2009)
Pietrobon, Davide, Cabella, Paolo, Balbi, Amedeo, Crittenden, Robert, De Gasperis, Giancarlo, Vittorio, Nicola
We apply the needlet formalism to the Wilkinson Microwave Anisotropy Probe 5-year data, looking for evidence of non-Gaussianity in the bispectrum of the needlet amplitudes. We confirm earlier...
Constraints on Primordial Non-Gaussianity from a Needlet Analysis of the WMAP-5 Data (2008)
Pietrobon, Davide, Cabella, Paolo, Balbi, Amedeo, De Gasperis, Giancarlo, Vittorio, Nicola
We look for a non-Gaussian signal in the WMAP 5-year temperature anisotropy maps by performing a needlet-based data analysis. We use the foreground-reduced maps obtained by the WMAP team through the...
Pietrobon, Davide, Amblard, Alexandre, Balbi, Amedeo, Cabella, Paolo, Cooray, Asantha, Marinucci, Domenico
We apply spherical needlets to the Wilkinson Microwave Anisotropy Probe 5-year cosmic microwave background (CMB) dataset, to search for imprints of non-isotropic features in the CMB sky. We use the...
Statistical Challenges in the Analysis of Cosmic Microwave Background Radiation (2008)
Cabella, Paolo, Marinucci, Domenico
An enormous amount of observations on Cosmic Microwave Background radiation has been collected in the last decade, and much more data are expected in the near future from planned or operating...
Harmonic Inpainting of the Cosmic Microwave Background Sky: Formulation and Error Estimate (2008)
Inoue, Kaiki Taro, Cabella, Paolo, Komatsu, Eiichiro
We develop a new interpolation scheme, based on harmonic inpainting, for reconstructing the cosmic microwave background temperature data within the Galaxy mask from the data outside the mask. We find...
Constraints on CPT violation from WMAP three year polarization data: a wavelet analysis (2007)
Cabella, Paolo, Natoli, Paolo, Silk, Joseph
We perform a wavelet analysis of the temperature and polarization maps of the Cosmic Microwave Background (CMB) delivered by the WMAP experiment in search for a parity violating signal. Such a signal...
ROMA: a map-making algorithm for polarised CMB data sets (2005)
De Gasperis, Giancarlo, Balbi, Amedeo, Cabella, Paolo, Natoli, Paolo, Vittorio, Nicola
We present ROMA, a parallel code to produce joint optimal temperature and polarisation maps out of multidetector CMB observations. ROMA is a fast, accurate and robust implementation of the iterative...
Theory of Cosmic Microwave Background Polarization (2004)
Cabella, Paolo, Kamionkowski, Marc
These lectures introduce some of the basic theory of cosmic microwave background (CMB) polarization with the primary aim of developing the theory of CMB polarization from inflationary gravitational...
Asymmetries in the local curvature of the WMAP data (2004)
Hansen, Frode K., Cabella, Paolo, Marinucci, Domenico, Vittorio, Nicola
We use the local curvature to investigate the possible existence of non-Gaussianity/asymmetry in the WMAP data. Considering the full sky we find results which are consistent with the Gaussian...
Search for non-Gaussianity in pixel, harmonic and wavelet space: compared and combined (2004)
Cabella, Paolo, Hansen, Frode, Marinucci, Domenico, Pagano, Daniele, Vittorio, Nicola
We present a comparison between three approaches to test non-Gaussianity of cosmic microwave background data. The Minkowski functionals, the empirical process method and the skewness of wavelet...