Report number
| arXiv:1901.06045 ; CERN-TH-2019-005 |
Title
| BE-HaPPY: Bias Emulator for Halo Power Spectrum including massive neutrinos |
Author(s)
| Valcin, David (ICC, Barcelona U.) ; Villaescusa-Navarro, Francisco (Flatiron Inst., New York) ; Verde, Licia (ICC, Barcelona U. ; ICREA, Barcelona) ; Raccanelli, Alvise (ICC, Barcelona U. ; CERN) |
Publication
| 2019-12-18 |
Imprint
| 2019-01-17 |
Number of pages
| 38 |
Note
| 14 figures |
In:
| JCAP 12 (2019) 057 |
DOI
| 10.1088/1475-7516/2019/12/057
|
Subject category
| astro-ph.CO ; Astrophysics and Astronomy |
Abstract
| We study the clustering properties of dark matter halos in real- and redshift-space in cosmologies with massless and massive neutrinos through a large set of state-of-the-art N-body simulations. We provide quick and easy-to-use prescriptions for the halo bias on linear and mildly non-linear scales, both in real and redshift space, which are valid also for massive neutrinos cosmologies. Finally we present a halo bias emulator,BE-HaPPY, calibrated on the N-body simulations, which is fast enough to be used in the standard Markov Chain Monte Carlo approach to cosmological inference. For a fiducial standard ΛCDM cosmology BE-HaPPY provides percent or sub-percent accuracy on the scales of interest (linear and well into the mildly non-linear regime), meeting therefore for the halo-bias the accuracy requirements for the analysis of next-generation large--scale structure surveys. |
Copyright/License
| preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2019-2025 IOP Publishing Ltd and Sissa Medialab |