Statistical imprints of CMB B-type polarization leakage in an incomplete sky survey analysis

In this paper, we perform a forecast analysis to test the capacity of future baryon acoustic oscillation (BAO) and cosmic microwave background (CMB) experiments to constrain phenomenological interacting dark energy models using the Fisher matrix formalism. We consider a Euclid-like experiment, in which BAO measurements is one of the main goals, to constrain the cosmological […]

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Preferred axis in cosmology

The foundation of modern cosmology relies on the so-called cosmological principle which states an homogeneous and isotropic distribution of matter in the universe on large scales. However, recent observations, such as the temperature anisotropy of the cosmic microwave background (CMB) radiation, the motion of galaxies in the universe, the polarization of quasars and the acceleration […]

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Preferred axis of CMB parity asymmetry in the masked maps

Both WMAP and Planck data show a significant odd-multipole preference in the large scales of the cosmic microwave background (CMB) temperature anisotropies. If this pattern originates from cosmological effects, then it can be considered a crucial clue for a violation in the cosmological principle. By defining various direction dependent statistics in the full-sky Planck 2015 […]

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Probing the statistical properties of CMB B-mode polarization through Minkowski Functionals

The detection of the magnetic type B-mode polarization is the main goal of future cosmic microwave background (CMB) experiments. In the standard model, the B-mode map is a strongly non-gaussian field due to the lensed component. Besides the two-point correlation function, the other statistics are also very important to dig the information of the polarization map. In […]

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Influence of Planck foreground masks in the large angular scale quadrant CMB asymmetry

The measured CMB angular distribution shows a great consistency with the LCDM model. However, isotropy violations were reported in CMB temperature maps of both WMAP and Planck data. We investigate the influence of different masks employed in the analysis of CMB angular distribution, in particular in the excess of power in the Southeastern quadrant (SEQ) […]

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Quadrant asymmetry in the angular distribution of the Cosmic Microwave Background in the Planck satellite data

Some peculiar features found in the angular distribution of the cosmic microwave background (CMB) measured by the Wilkinson Microwave Anisotropy Probe (WMAP) deserve further investigation. Among these peculiar features, is the quadrant asymmetry, which is likely related to the north-south asymmetry. In this paper, we aim to extend the analysis of the quadrant asymmetry in […]

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Neutrinos and dark energy constraints from future galaxy surveys and CMB lensing information

We explore the possibility of obtaining better constraints from future astronomical data by means of the Fisher information matrix formalism. In particular, we consider how cosmic microwave background (CMB) lensing information can improve our parameter error estimation. We consider a massive neutrino scenario and a time-evolving dark energy equation of state in the ΛCDM framework. We […]

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Asymmetries in the angular distribution of the Cosmic Microwave Background

We investigate some of the asymmetries reported in the CMB temperature angular distribution considering the {\Lambda}CDM model in the 3, 5 and 7 year WMAP data. We aim to analyze the 4 quadrants of the ILC CMB maps using 3 Galactic cuts: the WMAP KQ85 mask, a |b|<10 degrees and the WMAP KQ85 mask +|b|<10 […]

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