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11 papers · 1 filter
QUBIC: The QU Bolometric Interferometer for Cosmology
The QUBIC collaboration, E. Battistelli, A. Baù +57
One of the major challenges of modern cosmology is the detection of B-mode polarization anisotropies in the CMB. These originate from tensor fluctuations of the metric produced dur…
On the radial extent of the dwarf irregular galaxy IC10
N. Sanna, G. Bono, P. B. Stetson +16
We present new deep and accurate space (Advanced Camera for Surveys -- Wide Field Planetary Camera 2 at the Hubble Space Telescope) and ground-based (Suprime-Cam at Subaru Telescop…
Disentangling the gamma-ray emission of NGC1275 and that of the Perseus cluster
S. Colafrancesco, P. Marchegiani, P. Giommi
(Abridged). The gamma-ray emission from galaxy clusters hosting active galaxies is a complex combination of diffuse and point-like emission with different spectral and spatial prop…
Correlated Component Analysis for diffuse component separation with error estimation on simulated Planck polarization data
S. Ricciardi, A. Bonaldi, P. Natoli +6
We present a data analysis pipeline for CMB polarization experiments, running from multi-frequency maps to the power spectra. We focus mainly on component separation and, for the f…
New constraints on Parity Symmetry from a re-analysis of the WMAP-7 low resolution power spectra
A. Gruppuso, F. Finelli, P. Natoli +4
The Parity symmetry of the Cosmic Microwave Background (CMB) pattern as seen by WMAP 7 is tested jointly in temperature and polarization at large angular scale. A Quadratic Maximum…
Dark Matter in Modern Cosmology
S. Colafrancesco
The presence of Dark Matter (DM) is required in the universe regulated by the standard general relativistic theory of gravitation. The nature of DM is however still elusive to any…