The impact of baryons on the matter power spectrum from the Horizon-AGN cosmological hydrodynamical simulation

Nora Elisa Chisari; Mark L. A. Richardson; Julien Devriendt; Yohan Dubois; Aurel Schneider; Amandine M. C. Le Brun; Ricarda S. Beckmann; Sebastien Peirani; Adrianne Slyz; Christophe Pichon

The impact of baryons on the matter power spectrum from the Horizon-AGN cosmological hydrodynamical simulation

Nora Elisa Chisari
, Mark L. A. Richardson
, Julien Devriendt
, Yohan Dubois
, Aurel Schneider
, Amandine M. C. Le Brun
, Ricarda S. Beckmann
, Sebastien Peirani
, Adrianne Slyz
, Christophe Pichon

Research output: Working paper › Preprint › Academic

Abstract

Accurate cosmology from upcoming weak lensing surveys relies on knowledge of the total matter power spectrum at percent level at scales $k < 10$ $h$/Mpc, for which modelling the impact of baryonic physics is crucial. We compare measurements of the total matter power spectrum from the Horizon cosmological hydrodynamical simulations: a dark matter-only run, one with full baryonic physics, and another lacking Active Galactic Nuclei (AGN) feedback. Baryons cause a suppression of power at $k\simeq 10$ $h/$Mpc of $

Original language	English
Publisher	arXiv
Pages	1-19
Publication status	Published - 25 Jan 2018

Bibliographical note

19 pages, 14 figures, matches published version

Keywords

astro-ph.CO

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1801.08559v2Submitted manuscript, 823 KB

https://arxiv.org/abs/1801.08559

Cite this

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title = "The impact of baryons on the matter power spectrum from the Horizon-AGN cosmological hydrodynamical simulation",

abstract = " Accurate cosmology from upcoming weak lensing surveys relies on knowledge of the total matter power spectrum at percent level at scales \$k < 10\$ \$h\$/Mpc, for which modelling the impact of baryonic physics is crucial. We compare measurements of the total matter power spectrum from the Horizon cosmological hydrodynamical simulations: a dark matter-only run, one with full baryonic physics, and another lacking Active Galactic Nuclei (AGN) feedback. Baryons cause a suppression of power at \$k\textbackslash{}simeq 10\$ \$h/\$Mpc of \$",

keywords = "astro-ph.CO",

author = "Chisari, \{Nora Elisa\} and Richardson, \{Mark L. A.\} and Julien Devriendt and Yohan Dubois and Aurel Schneider and Brun, \{Amandine M. C. Le\} and Beckmann, \{Ricarda S.\} and Sebastien Peirani and Adrianne Slyz and Christophe Pichon",

note = "19 pages, 14 figures, matches published version",

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T1 - The impact of baryons on the matter power spectrum from the Horizon-AGN cosmological hydrodynamical simulation

AU - Chisari, Nora Elisa

AU - Richardson, Mark L. A.

AU - Devriendt, Julien

AU - Dubois, Yohan

AU - Schneider, Aurel

AU - Brun, Amandine M. C. Le

AU - Beckmann, Ricarda S.

AU - Peirani, Sebastien

AU - Slyz, Adrianne

AU - Pichon, Christophe

N1 - 19 pages, 14 figures, matches published version

PY - 2018/1/25

Y1 - 2018/1/25

N2 - Accurate cosmology from upcoming weak lensing surveys relies on knowledge of the total matter power spectrum at percent level at scales $k < 10$ $h$/Mpc, for which modelling the impact of baryonic physics is crucial. We compare measurements of the total matter power spectrum from the Horizon cosmological hydrodynamical simulations: a dark matter-only run, one with full baryonic physics, and another lacking Active Galactic Nuclei (AGN) feedback. Baryons cause a suppression of power at $k\simeq 10$ $h/$Mpc of $

AB - Accurate cosmology from upcoming weak lensing surveys relies on knowledge of the total matter power spectrum at percent level at scales $k < 10$ $h$/Mpc, for which modelling the impact of baryonic physics is crucial. We compare measurements of the total matter power spectrum from the Horizon cosmological hydrodynamical simulations: a dark matter-only run, one with full baryonic physics, and another lacking Active Galactic Nuclei (AGN) feedback. Baryons cause a suppression of power at $k\simeq 10$ $h/$Mpc of $

KW - astro-ph.CO

M3 - Preprint

SP - 1

EP - 19

BT - The impact of baryons on the matter power spectrum from the Horizon-AGN cosmological hydrodynamical simulation

PB - arXiv

ER -

The impact of baryons on the matter power spectrum from the Horizon-AGN cosmological hydrodynamical simulation

Abstract

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Keywords

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