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Cosmological birefringence constraints from CMB and astrophysical polarization data
M. Galaverni, G. Gubitosi, F. Paci +1
Cosmological birefringence is a rotation of the polarization plane of photons coming from sources of astrophysical and cosmological origin. The rotation can also depend on the ener…
Supervoids in the WISE-2MASS catalogue imprinting Cold Spots in the Cosmic Microwave Background
Fabio Finelli, Juan Garcia-Bellido, Andras Kovacs +2
The Cold Spot (CS) is a clear feature in the Cosmic Microwave Background (CMB); it could be of primordial origin, or caused by a intervening structure along the line of sight. We i…
A comparison of CMB Angular Power Spectrum Estimators at Large Scales: the TT case
Diego Molinari, Alessandro Gruppuso, Gianluca Polenta +5
In the context of cosmic microwave background (CMB) data analysis, we compare the efficiency at large scale of two angular power spectrum algorithms, implementing, respectively, th…