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Euclid preparation: XXIV. Calibration of the halo mass function in Λ(ν)CDM cosmologies

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

DOI

  • T. Castro, National Institute for Astrophysics, National Institute for Nuclear Physics, University of Trieste
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  • A. Fumagalli, National Institute for Astrophysics, National Institute for Nuclear Physics, University of Trieste
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  • R. E. Angulo, Donostia International Physics Center, Ikerbasque Basque Foundation for Science
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  • S. Bocquet, Ludwig-Maximilians-Universität
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  • S. Borgani, National Institute for Astrophysics, National Institute for Nuclear Physics, University of Trieste
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  • C. Carbone, Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna
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  • J. Dakin
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  • K. Dolag, Ludwig-Maximilians-Universität, Max Planck Institute for Astrophysics
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  • C. Giocoli, National Institute for Astrophysics, National Institute for Nuclear Physics
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  • P. Monaco, National Institute for Astrophysics, National Institute for Nuclear Physics, University of Trieste
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  • A. Ragagnin, National Institute for Astrophysics, University of Trieste, University of Bologna
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  • A. Saro, National Institute for Astrophysics, National Institute for Nuclear Physics, University of Trieste
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  • E. Sefusatti, National Institute for Astrophysics, National Institute for Nuclear Physics, University of Trieste
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  • M. Costanzi, National Institute for Astrophysics, University of Trieste
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  • A. M.C. Le Brun, Université Paris Dauphine - PSL (Paris IX)
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  • P. S. Corasaniti, Université Paris Dauphine - PSL (Paris IX)
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  • A. Amara, University of Portsmouth
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  • L. Amendola, Ruprecht-Karls-Universität Heidelberg
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  • M. Baldi, University of Bologna, Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna, National Institute for Nuclear Physics
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  • R. Bender, Ludwig-Maximilians-Universität, Max Planck Institute for Extraterrestrial Physics
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  • C. Bodendorf, Max Planck Institute for Astrophysics
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  • E. Branchini, University of Genoa, National Institute for Nuclear Physics
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  • M. Brescia, University of Naples Federico II, National Institute for Astrophysics
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  • S. Camera, University of Turin, National Institute for Nuclear Physics, National Institute for Astrophysics
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  • V. Capobianco, National Institute for Astrophysics
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  • J. Carretero, Institute for High Energy Physics, Port d'Informació Científica (PIC)
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  • M. Castellano, National Institute for Astrophysics
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  • S. Cavuoti, National Institute for Astrophysics, National Institute for Nuclear Physics
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  • A. Cimatti, University of Bologna, National Institute for Astrophysics
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  • R. Cledassou, CNES Centre National d'Etudes Spatiales, Institut National de Physique Nucleaire et de Physique des Particules
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  • G. Congedo, University of Edinburgh
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  • L. Conversi, European Space Astronomy Centre, ESRIN - ESA Centre for Earth Observation
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  • Y. Copin, Universite Claude Bernard Lyon 1
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  • L. Corcione, National Institute for Astrophysics
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  • F. Courbin, Swiss Federal Institute of Technology Lausanne
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  • A. Da Silva, University of Lisbon
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  • H. Degaudenzi, University of Geneva
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  • M. Douspis, Université Paris-Saclay (Paris XI)
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  • F. Dubath, University of Geneva
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  • C. A.J. Duncan, University of Oxford, Manchester University
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  • X. Dupac, European Space Astronomy Centre
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  • S. Farrens, Université Paris-Saclay (Paris XI)
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  • S. Ferriol, Universite Claude Bernard Lyon 1
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  • P. Fosalba, The Spanish National Research Council (CSIC), Institute of Space Studies of Catalonia
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  • M. Frailis, National Institute for Astrophysics
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  • K. Pedersen
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  • P. Schneider, University of Bonn
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  • Y. Wang, California Institute of Technology
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  • A. G. Sánchez, Max Planck Institute for Extraterrestrial Physics
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  • M. Schirmer, Max Planck Institute for Astronomy
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  • Euclid Collaboration

Euclid s photometric galaxy cluster survey has the potential to be a very competitive cosmological probe. The main cosmological probe with observations of clusters is their number count, within which the halo mass function (HMF) is a key theoretical quantity. We present a new calibration of the analytic HMF, at the level of accuracy and precision required for the uncertainty in this quantity to be subdominant with respect to other sources of uncertainty in recovering cosmological parameters from Euclid cluster counts. Our model is calibrated against a suite of N-body simulations using a Bayesian approach taking into account systematic errors arising from numerical effects in the simulation. First, we test the convergence of HMF predictions from different N-body codes, by using initial conditions generated with different orders of Lagrangian Perturbation theory, and adopting different simulation box sizes and mass resolution. Then, we quantify the effect of using different halo finder algorithms, and how the resulting differences propagate to the cosmological constraints. In order to trace the violation of universality in the HMF, we also analyse simulations based on initial conditions characterised by scale-free power spectra with different spectral indexes, assuming both Einsteinde Sitter and standard CDM expansion histories. Based on these results, we construct a fitting function for the HMF that we demonstrate to be sub-percent accurate in reproducing results from 9 different variants of the CDM model including massive neutrinos cosmologies. The calibration systematic uncertainty is largely sub-dominant with respect to the expected precision of future massobservation relations; with the only notable exception of the effect due to the halo finder, that could lead to biased cosmological inference.

OriginalsprogEngelsk
ArtikelnummerA100
TidsskriftAstronomy and Astrophysics
Vol/bind671
Antal sider25
ISSN0004-6361
DOI
StatusUdgivet - mar. 2023

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