Dancing in the dark: galactic properties trace spin swings along the cosmic web

no code implementations • 5 Feb 2014 • Yohan Dubois, Christophe Pichon, Charlotte Welker, Damien Le Borgne, Julien Devriendt, Clotilde Laigle, Sandrine Codis, Dmitry Pogosyan, Stéphane Arnouts, Karim Benabed, Emmanuel Bertin, Jeremy Blaizot, François Bouchet, Jean-François Cardoso, Stéphane Colombi, Valérie de Lapparent, Vincent Desjacques, Raphaël Gavazzi, Susan Kassin, Taysun Kimm, Henry McCracken, Bruno Milliard, Sébastien Peirani, Simon Prunet, Stéphane Rouberol, Joseph Silk, Adrianne Slyz, Thierry Sousbie, Romain Teyssier, Laurence Tresse, Marie Treyer, Didier Vibert, Marta Volonteri

A large-scale hydrodynamical cosmological simulation, Horizon-AGN, is used to investigate the alignment between the spin of galaxies and the cosmic filaments above redshift 1. 2.

Cosmology and Nongalactic Astrophysics

Information content in the redshift-space galaxy power spectrum and bispectrum

no code implementations • 8 Jul 2020 • Nishant Agarwal, Vincent Desjacques, Donghui Jeong, Fabian Schmidt

We present a Fisher information study of the statistical impact of galaxy bias and selection effects on the estimation of key cosmological parameters from galaxy redshift surveys; in particular, the angular diameter distance, Hubble parameter, and linear growth rate at a given redshift, the cold dark matter density, and the tilt and running of the primordial power spectrum.

Selection bias Cosmology and Nongalactic Astrophysics

Non-perturbative halo clustering from cosmological density peaks

no code implementations • 28 Dec 2020 • Tobias Baldauf, Sandrine Codis, Vincent Desjacques, Christophe Pichon

Our predictions are in good agreement with the Lagrangian clustering of dark matter proto-haloes reconstructed from N-body simulations.

Cosmology and Nongalactic Astrophysics