Large-scale galaxy bias

V Desjacques, D Jeong, F Schmidt - Physics reports, 2018 - Elsevier
This review presents a comprehensive overview of galaxy bias, that is, the statistical relation
between the distribution of galaxies and matter. We focus on large scales where cosmic …

The observed galaxy power spectrum in General Relativity

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 …

Galaxy number counts to second order and their bispectrum

E Di Dio, R Durrer, G Marozzi… - Journal of Cosmology …, 2014 - iopscience.iop.org
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 …

Large Scale Limit of the Observed Galaxy Power Spectrum

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 …

Testing inflation with large scale structure: connecting hopes with reality

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 …

Wide-angle and relativistic effects in Fourier-space clustering statistics

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 …

Modeling relativistic contributions to the halo power spectrum dipole

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 …

Wide-angle effects in the galaxy bispectrum

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 …

Measuring the lensing potential with tomographic galaxy number counts

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 …

The bispectrum of relativistic galaxy number counts

E Di Dio, R Durrer, G Marozzi… - Journal of Cosmology …, 2016 - iopscience.iop.org
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 …