On the impact of baryons on the halo mass function, bias, and cluster cosmology
Autor: | Alexandro Saro, Emiliano Sefusatti, Klaus Dolag, Tiago Castro, Miguel Quartin, Stefano Borgani, Valerio Marra |
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Přispěvatelé: | Castro, T., Borgani, S., Dolag, K., Marra, V., Quartin, M., Saro, A., Sefusatti, E., ITA, DEU, BRA |
Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
clusters:general [galaxies]
Cosmology and Nongalactic Astrophysics (astro-ph.CO) Active galactic nucleus galaxies:clusters:general FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics 01 natural sciences Cosmology 0103 physical sciences Halo effect 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Galaxy cluster Physics 010308 nuclear & particles physics Halo mass function haloe [galaxies] Astronomy and Astrophysics galaxies:haloes large-scale structure of Universe Astrophysics - Astrophysics of Galaxies Baryon Supernova 13. Climate action Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Halo Astrophysics - Cosmology and Nongalactic Astrophysics |
Zdroj: | Monthly Notices of the Royal Astronomical Society |
Popis: | Luminous matter produces very energetic events, such as active galactic nuclei and supernova explosions, that significantly affect the internal regions of galaxy clusters. Although the current uncertainty in the effect of baryonic physics on cluster statistics is subdominant as compared to other systematics, the picture is likely to change soon as the amount of high-quality data is growing fast, urging the community to keep theoretical systematic uncertainties below the ever-growing statistical precision. In this paper, we study the effect of baryons on galaxy clusters, and their impact on the cosmological applications of clusters, using the Magneticum suite of cosmological hydrodynamical simulations. We show that the impact of baryons on the halo mass function can be recast in terms on a variation of the mass of the halos simulated with pure N-body, when baryonic effects are included. The halo mass function and halo bias are only indirectly affected. Finally, we demonstrate that neglecting baryonic effects on halos mass function and bias would significantly alter the inference of cosmological parameters from high-sensitivity next-generations surveys of galaxy clusters. v2: matches published version. 22 pages, 17 figures |
Databáze: | OpenAIRE |
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