Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Lepori, Francesca"'
Autor:
Bonvin, Camille, Lepori, Francesca, Schulz, Sebastian, Tutusaus, Isaac, Adamek, Julian, Fosalba, Pablo
Publikováno v:
MNRAS, Volume 525, Issue 3, November 2023, Pages 4611-4627
The data on spectroscopic galaxy clustering collected by the Dark Energy Spectroscopic Instrument (DESI) will allow the significant detection of subtle features in the galaxy two-point correlation in redshift space, beyond the "standard" redshift-spa
Externí odkaz:
http://arxiv.org/abs/2306.04213
Publikováno v:
Journal of Cosmology and Astroparticle Physics, Volume 2023, February 2023
We present the halo number counts and its two-point statistics, the observable angular power spectrum, extracted for the first time from relativistic N-body simulations. The halo catalogues used in this work are built from the relativistic N-body cod
Externí odkaz:
http://arxiv.org/abs/2209.10533
Publikováno v:
Journal of Cosmology and Astroparticle Physics, Volume 2021, December 2021
In this paper we present for the first time the angular power spectra $C_\ell(z,z')$ for number counts from relativistic N-body simulations. We use the relativistic N-body code gevolution with its exact integration of lightlike geodesics which includ
Externí odkaz:
http://arxiv.org/abs/2106.01347
Publikováno v:
JCAP04(2021)055
We study the importance of gravitational lensing in the modelling of the number counts of galaxies. We confirm previous results for photometric surveys, showing that lensing cannot be neglected in a survey like LSST since it would infer a significant
Externí odkaz:
http://arxiv.org/abs/2004.12981
We present a numerical weak-lensing analysis that is fully relativistic and non-perturbative for the scalar part of the gravitational potential and first-order in the vector part, frame dragging. Integrating the photon geodesics backwards from the ob
Externí odkaz:
http://arxiv.org/abs/2002.04024
Publikováno v:
JCAP04(2020)006
We study the impact of relativistic effects in the 3-dimensional cross-correlation between Lyman-$\alpha$ forest and quasars. Apart from the relativistic effects, which are dominated by the Doppler contribution, several systematic effects are also in
Externí odkaz:
http://arxiv.org/abs/1910.06305
Publikováno v:
Journal of Cosmology and Astroparticle Physics, Volume 2018, September 2018
Clustering of a perfect fluid does not lead to the generation of vorticity. It is the collisionless nature of dark matter, inducing velocity dispersion and shell crossing, which is at the origin of cosmological vorticity generation. In this paper we
Externí odkaz:
http://arxiv.org/abs/1806.05146
We study the impact of neglecting lensing magnification in galaxy clustering analyses for future galaxy surveys, considering the LambdaCDM model and two extensions: massive neutrinos and modifications of General Relativity. Our study focuses on the b
Externí odkaz:
http://arxiv.org/abs/1711.07466
Optimal galaxy survey for detecting the dipole in the cross-correlation with 21 cm Intensity Mapping
Publikováno v:
JCAP05(2018)043
We investigate the future perspectives of the detection of the relativistic dipole by cross-correlating the 21 cm emission in Intensity Mapping (IM) and galaxy surveys at low redshift. We model the neutral hydrogen (HI) and the galaxy population by m
Externí odkaz:
http://arxiv.org/abs/1709.03523
We investigate the Alcock Paczynski (AP) test applied to the Baryon Acoustic Oscillation (BAO) feature in the galaxy correlation function. By using a general formalism that includes relativistic effects, we quantify the importance of the linear redsh
Externí odkaz:
http://arxiv.org/abs/1606.03114