The impact of baryons on the matter power spectrum from the Horizon-AGN cosmological hydrodynamical simulation
Publication date
2018-01-25
Authors
Chisari, Elisa
Richardson, Mark L. A.
Devriendt, Julien
Dubois, Yohan
Schneider, Aurel
Brun, Amandine M. C. Le
Beckmann, Ricarda S.
Peirani, Sebastien
Slyz, Adrianne
Pichon, Christophe
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DOI
Document Type
/dk/atira/pure/researchoutput/researchoutputtypes/workingpaper/preprint
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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 $
Keywords
astro-ph.CO
Citation
Chisari, N E, Richardson, M L A, Devriendt, J, Dubois, Y, Schneider, A, Brun, A M C L, Beckmann, R S, Peirani, S, Slyz, A & Pichon, C 2018 'The impact of baryons on the matter power spectrum from the Horizon-AGN cosmological hydrodynamical simulation' arXiv, pp. 1-19. < https://arxiv.org/abs/1801.08559 >