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49 papers · 1 filter
On the non-Gaussianity from Recombination
Nicola Bartolo, Antonio Riotto
The non-linear effects operating at the recombination epoch generate a non-Gaussian signal in the CMB anisotropies. Such a contribution is relevant because it represents a major pa…
CMBPol Mission Concept Study: Probing Inflation with CMB Polarization
Daniel Baumann, Mark G. Jackson, Peter Adshead +56
We summarize the utility of precise cosmic microwave background (CMB) polarization measurements as probes of the physics of inflation. We focus on the prospects for using CMB measu…
A global autocorrelation study after the first Auger data: impact on the number density of UHECR sources
A. Cuoco, S. Hannestad, T. Haugboelle +2
We perform an autocorrelation study of the Auger data with the aim to constrain the number density n_s of ultrahigh energy cosmic ray (UHECR) sources, estimating at the same time t…
Impact of Uncertainties in the Cosmological Parameters on the Measurement of Primordial non-Gaussianity
M. Liguori, A. Riotto
We study the impact of cosmological parameters' uncertainties on estimates of the primordial NG parameter f_NL in local and equilateral models of non-Gaussianity. We show that prop…
The Cold Spot as a Large Void: Rees-Sciama effect on CMB Power Spectrum and Bispectrum
Isabella Masina, Alessio Notari
The detection of a "Cold Spot" in the CMB sky could be explained by the presence of an anomalously large spherical underdense region (with radius of a few hundreds Mpc/h) located b…
Parameterizing the Effect of Dark Energy Perturbations on the Growth of Structures
G. Ballesteros, A. Riotto
We present an analytical fit to the growth function of the dark matter perturbations when dark energy perturbations are present. The growth index depends upon the dark energy equat…