E Castorina, E Di Dio - Journal of Cosmology and Astroparticle …, 2022 - iopscience.iop.org
Measurements of the clustering of galaxies in Fourier space, and at low wavenumbers, offer a window into the early Universe via the possible presence of scale dependent bias …
We determine the number counts to second order in cosmological perturbation theory in the Poisson gauge and allowing for anisotropic stress. The calculation is performed using an …
M Foglieni, M Pantiri, E Di Dio, E Castorina - Physical Review Letters, 2023 - APS
The large scale limit of the galaxy power spectrum provides a unique window into the early Universe through a possible detection of scale dependent bias produced by primordial non …
M Alvarez, T Baldauf, JR Bond, N Dalal… - arXiv preprint arXiv …, 2014 - arxiv.org
The statistics of primordial curvature fluctuations are our window into the period of inflation, where these fluctuations were generated. To date, the cosmic microwave background has …
M Noorikuhani, R Scoccimarro - Physical Review D, 2023 - APS
Galaxy power spectrum and bispectrum signals are distorted by peculiar velocities and other relativistic effects arising from a perturbed spacetime background. In addition, study of …
F Beutler, E Di Dio - Journal of Cosmology and Astroparticle …, 2020 - iopscience.iop.org
We study the power spectrum dipole of an N-body simulation which includes relativistic effects through ray-tracing and covers the low redshift Universe up to z max= 0.465 …
K Pardede, E Di Dio, E Castorina - Journal of Cosmology and …, 2023 - iopscience.iop.org
Primordial non-Gaussianities (PNG) leave unique signatures in the bispectrum of the large- scale structure. With upcoming galaxy surveys set to improve PNG constraints by at least …
F Montanari, R Durrer - Journal of Cosmology and Astroparticle …, 2015 - iopscience.iop.org
We investigate how the lensing potential can be measured tomographically with future galaxy surveys using their number counts. Such a measurement is an independent test of …
We discuss the dominant terms of the relativistic galaxy number counts to second order in cosmological perturbation theory on sub-Hubble scales and on intermediate to large …