A. Fumagalli
Euclid : Effects of sample covariance on the number counts of galaxy clusters
Fumagalli, A.; Saro, A.; Borgani, S.; Castro, T.; Costanzi, M.; Monaco, P.; Munari, E.; Sefusatti, E.; Amara, A.; Auricchio, N.; Balestra, A.; Bodendorf, C.; Bonino, D.; Branchini, E.; Brinchmann, J.; Capobianco, V.; Carbone, C.; Castellano, M.; Cavuoti, S.; Cimatti, A.; Cledassou, R.; Conselice, C.J.; Corcione, L.; Costille, A.; Cropper, M.; Degaudenzi, H.; Douspis, M.; Dubath, F.; Dusini, S.; Ealet, A.; Fosalba, P.; Franceschi, E.; Franzetti, P.; Fumana, M.; Garilli, B.; Giocoli, C.; Grupp, F.; Guzzo, L.; Haugan, S.V.H.; Hoekstra, H.; Holmes, W.; Hormuth, F.; Jahnke, K.; Kiessling, A.; Kilbinger, M.; Kitching, T.; Kümmel, M.; Kunz, M.; Kurki-Suonio, H.; Laureijs, R.; Lilje, P.B.; Lloro, I.; Maiorano, E.; Marggraf, O.; Markovic, K.; Massey, R.; Meneghetti, M.; Meylan, G.; Moscardini, L.; Niemi, S.M.; Padilla, C.; Paltani, S.; Pasian, F.; Pedersen, K.; Pettorino, V.; Pires, S.; Poncet, M.; Popa, L.; Pozzetti, L.; Raison, F.; Rhodes, J.; Roncarelli, M.; Rossetti, E.; Saglia, R.; Scarame...
Authors
A. Saro
S. Borgani
T. Castro
M. Costanzi
P. Monaco
E. Munari
E. Sefusatti
A. Amara
N. Auricchio
A. Balestra
C. Bodendorf
D. Bonino
E. Branchini
J. Brinchmann
V. Capobianco
C. Carbone
M. Castellano
S. Cavuoti
A. Cimatti
R. Cledassou
C.J. Conselice
L. Corcione
A. Costille
M. Cropper
H. Degaudenzi
M. Douspis
F. Dubath
S. Dusini
A. Ealet
P. Fosalba
E. Franceschi
P. Franzetti
M. Fumana
B. Garilli
C. Giocoli
F. Grupp
L. Guzzo
S.V.H. Haugan
H. Hoekstra
W. Holmes
F. Hormuth
K. Jahnke
A. Kiessling
M. Kilbinger
T. Kitching
M. Kümmel
M. Kunz
H. Kurki-Suonio
R. Laureijs
P.B. Lilje
I. Lloro
E. Maiorano
O. Marggraf
K. Markovic
Professor Richard Massey r.j.massey@durham.ac.uk
Professor
M. Meneghetti
G. Meylan
L. Moscardini
S.M. Niemi
C. Padilla
S. Paltani
F. Pasian
K. Pedersen
V. Pettorino
S. Pires
M. Poncet
L. Popa
L. Pozzetti
F. Raison
J. Rhodes
M. Roncarelli
E. Rossetti
R. Saglia
R. Scaramella
P. Schneider
A. Secroun
G. Seidel
S. Serrano
C. Sirignano
G. Sirri
A.N. Taylor
I. Tereno
R. Toledo-Moreo
E.A. Valentijn
L. Valenziano
Y. Wang
J. Weller
G. Zamorani
J. Zoubian
M. Brescia
G. Congedo
L. Conversi
S. Mei
M. Moresco
T. Vassallo
Abstract
Aims. We investigate the contribution of shot-noise and sample variance to uncertainties in the cosmological parameter constraints inferred from cluster number counts, in the context of the Euclid survey. Methods. By analysing 1000 Euclid-like light cones, produced with the PINOCCHIO approximate method, we validated the analytical model of Hu & Kravtsov (2003, ApJ, 584, 702) for the covariance matrix, which takes into account both sources of statistical error. Then, we used such a covariance to define the likelihood function that is better equipped to extract cosmological information from cluster number counts at the level of precision that will be reached by the future Euclid photometric catalogs of galaxy clusters. We also studied the impact of the cosmology dependence of the covariance matrix on the parameter constraints. Results. The analytical covariance matrix reproduces the variance measured from simulations within the 10 percent; such a difference has no sizeable effect on the error of cosmological parameter constraints at this level of statistics. Also, we find that the Gaussian likelihood with full covariance is the only model that provides an unbiased inference of cosmological parameters without underestimating the errors, and that the cosmology-dependence of the covariance must be taken into account.
Citation
Fumagalli, A., Saro, A., Borgani, S., Castro, T., Costanzi, M., Monaco, P., Munari, E., Sefusatti, E., Amara, A., Auricchio, N., Balestra, A., Bodendorf, C., Bonino, D., Branchini, E., Brinchmann, J., Capobianco, V., Carbone, C., Castellano, M., Cavuoti, S., Cimatti, A., …Vassallo, T. (2021). Euclid : Effects of sample covariance on the number counts of galaxy clusters. Astronomy & Astrophysics, 652, Article A21. https://doi.org/10.1051/0004-6361/202140592
Journal Article Type | Article |
---|---|
Acceptance Date | Apr 9, 2021 |
Online Publication Date | Aug 3, 2021 |
Publication Date | 2021-08 |
Deposit Date | Sep 29, 2021 |
Publicly Available Date | Dec 14, 2021 |
Journal | Astronomy & Astrophysics |
Print ISSN | 0004-6361 |
Electronic ISSN | 1432-0746 |
Publisher | EDP Sciences |
Peer Reviewed | Peer Reviewed |
Volume | 652 |
Article Number | A21 |
DOI | https://doi.org/10.1051/0004-6361/202140592 |
Public URL | https://durham-repository.worktribe.com/output/1231350 |
Files
Published Journal Article
(1.4 Mb)
PDF
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
Copyright Statement
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
You might also like
RXJ0437+00: constraining dark matter with exotic gravitational lenses
(2023)
Journal Article
Abell 1201: detection of an ultramassive black hole in a strong gravitational lens
(2023)
Journal Article
PyAutoGalaxy: Open-Source Multiwavelength Galaxy Structure & Morphology
(2023)
Journal Article
Downloadable Citations
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2025
Advanced Search