Zobrazeno 1 - 10
of 724
pro vyhledávání: '"A. Ravenni"'
Autor:
Baldi, Marco, Fondi, Emanuele, Karagiannis, Dionysios, Moscardini, Lauro, Ravenni, Andrea, Coulton, William R., Jung, Gabriel, Liguori, Michele, Marinucci, Marco, Verde, Licia, Villaescusa-Navarro, Francisco, Wandelt, Banjamin D.
We present the results of a set of cosmological N-body simulations with standard $\Lambda$CDM cosmology but characterized by a scale-dependent primordial non-Gaussianity of the local type featuring a power-law dependence of the $f_{\rm NL}^{\rm loc}(
Externí odkaz:
http://arxiv.org/abs/2407.06641
Autor:
Jung, Gabriel, Ravenni, Andrea, Liguori, Michele, Baldi, Marco, Coulton, William R., Villaescusa-Navarro, Francisco, Wandelt, Benjamin D.
We apply a suite of different estimators to the Quijote-PNG halo catalogues to find the best approach to constrain Primordial non-Gaussianity (PNG) at non-linear cosmological scales, up to $k_{\rm max} = 0.5 \, h\,{\rm Mpc}^{-1}$. The set of summary
Externí odkaz:
http://arxiv.org/abs/2403.00490
Autor:
Fondi, Emanuele, Verde, Licia, Villaescusa-Navarro, Francisco, Baldi, Marco, Coulton, William R., Jung, Gabriel, Karagiannis, Dionysios, Liguori, Michele, Ravenni, Andrea, Wandelt, Benjamin D.
Publikováno v:
JCAP02(2024)048
Primordial non-Gaussianity of the local type induces a strong scale-dependent bias on the clustering of halos in the late-time Universe. This signature is particularly promising to provide constraints on the non-Gaussianity parameter $f_{\rm NL}$ fro
Externí odkaz:
http://arxiv.org/abs/2311.10088
We perform a detailed study of the cosmological bias of gravitational gave (GW) events produced by binary black hole mergers (BBHM). We start from a BBHM distribution modeled inside the EAGLE hydrodyamical simulation using the population synthesis co
Externí odkaz:
http://arxiv.org/abs/2305.18003
Autor:
Jung, Gabriel, Ravenni, Andrea, Baldi, Marco, Coulton, William R., Jamieson, Drew, Karagiannis, Dionysios, Liguori, Michele, Shao, Helen, Verde, Licia, Villaescusa-Navarro, Francisco, Wandelt, Benjamin D.
Publikováno v:
Astrophys.J. 957 (2023) 1, 50
We study signatures of primordial non-Gaussianity (PNG) in the redshift-space halo field on non-linear scales, using a combination of three summary statistics, namely the halo mass function (HMF), power spectrum, and bispectrum. The choice of adding
Externí odkaz:
http://arxiv.org/abs/2305.10597
In this paper, we provide the first computations for the distortion transfer functions of the cosmic microwave background (CMB) in the perturbed Universe, following up on paper I and II in this series. We illustrate the physical effects inherent to t
Externí odkaz:
http://arxiv.org/abs/2212.02817
In this paper, we formulate a generalised photon Boltzmann hierarchy that allows us to model the evolution and creation of spectral distortion anisotropies in the early Universe. We directly build on our first paper in this series, extending the ther
Externí odkaz:
http://arxiv.org/abs/2210.15308
Spectral distortions of the cosmic microwave background (CMB) have been recognized as an important future probe of the early Universe. Existing theoretical studies primarily focused on describing the evolution and creation of average distortions, ign
Externí odkaz:
http://arxiv.org/abs/2210.09327
Primordial non-Gaussianity can source $\mu$-distortion anisotropies that are correlated with the large-scale temperature and polarization signals of the cosmic microwave background (CMB). A measurement of $\mu T$ and $\mu E$ correlations can therefor
Externí odkaz:
http://arxiv.org/abs/2205.15971
Multi-field inflation models and non-Bunch-Davies vacuum initial conditions both predict sizeable non-Gaussian primordial perturbations and anisotropic $\mu$-type spectral distortions of the cosmic microwave background (CMB) blackbody. While CMB anis
Externí odkaz:
http://arxiv.org/abs/2110.14664