A Caltech Library Service

Euclid: Cosmological forecasts from the void size function

Contarini, S. and Verza, G. and Pisani, A. and Hamaus, N. and Sahlén, M. and Carbone, C. and Dusini, S. and Marulli, F. and Moscardini, L. and Renzi, A. and Sirignano, C. and Stanco, L. and Aubert, M. and Bonici, M. and Castignani, G. and Courtois, H. M. and Escoffier, S. and Guinet, D. and Kovács, A. and Lavaux, G. and Massara, E. and Nadathur, S. and Pollina, G. and Ronconi, T. and Ruppin, F. and Sakr, Z. and Veropalumbo, A. and Wandelt, B. D. and Amara, A. and Auricchio, N. and Baldi, M. and Bonino, D. and Branchini, E. and Brescia, M. and Brinchmann, J. and Camera, S. and Capobianco, V. and Carretero, J. and Castellano, M. and Cavuoti, S. and Cledassou, R. and Congedo, G. and Conselice, C. J. and Conversi, L. and Copin, Y. and Corcione, L. and Courbin, F. and Cropper, M. and Da Silva, A. and Degaudenzi, H. and Dubath, F. and Duncan, C. A. J. and Dupac, X. and Ealet, A. and Farrens, S. and Ferriol, S. and Fosalba, P. and Frailis, M. and Franceschi, E. and Garilli, B. and Gillard, W. and Gillis, B. and Giocoli, C. and Grazian, A. and Grupp, F. and Guzzo, L. and Haugan, S. and Holmes, W. and Hormuth, F. and Jahnke, K. and Kümmel, M. and Kermiche, S. and Kiessling, A. and Kilbinger, M. and Kunz, M. and Kurki-Suonio, H. and Laureijs, R. and Ligori, S. and Lilje, P. B. and Lloro, I. and Maiorano, E. and Mansutti, O. and Marggraf, O. and Markovic, K. and Massey, R. and Melchior, M. and Meneghetti, M. and Meylan, G. and Moresco, M. and Munari, E. and Niemi, S. M. and Padilla, C. and Paltani, S. and Pasian, F. and Pedersen, K. and Percival, W. J. and Pettorino, V. and Pires, S. and Polenta, G. and Poncet, M. and Popa, L. and Pozzetti, L. and Raison, F. and Rhodes, J. and Rossetti, E. and Saglia, R. and Sartoris, B. and Schneider, P. and Secroun, A. and Seidel, G. and Sirri, G. and Surace, C. and Tallada-Crespí, P. and Taylor, A. N. and Tereno, I. and Toledo-Moreo, R. and Torradeflot, F. and Valentijn, E. A. and Valenziano, L. and Wang, Y. and Weller, J. and Zamorani, G. and Zoubian, J. and Andreon, S. and Maino, D. and Mei, S. (2022) Euclid: Cosmological forecasts from the void size function. Astronomy and Astrophysics, 667 . Art. No. A162. ISSN 0004-6361. doi:10.1051/0004-6361/202244095.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


The Euclid mission – with its spectroscopic galaxy survey covering a sky area over 15 000 deg² in the redshift range 0.9 z Euclid Flagship simulation. We identified voids in the Flagship light-cone, which closely matches the features of the upcoming Euclid spectroscopic data set. We modelled the void size function considering a state-of-the art methodology: we relied on the volume-conserving (Vdn) model, a modification of the popular Sheth & van de Weygaert model for void number counts, extended by means of a linear function of the large-scale galaxy bias. We found an excellent agreement between model predictions and measured mock void number counts. We computed updated forecasts for the Euclid mission on DE from the void size function and provided reliable void number estimates to serve as a basis for further forecasts of cosmological applications using voids. We analysed two different cosmological models for DE: the first described by a constant DE equation of state parameter, w, and the second by a dynamic equation of state with coefficients w₀ and wₐ. We forecast 1σ errors on w lower than 10% and we estimated an expected figure of merit (FoM) for the dynamical DE scenario FoM_(w₀,wₐ) = 17 when considering only the neutrino mass as additional free parameter of the model. The analysis is based on conservative assumptions to ensure full robustness, and is a pathfinder for future enhancements of the technique. Our results showcase the impressive constraining power of the void size function from the Euclid spectroscopic sample, both as a stand-alone probe, and to be combined with other Euclid cosmological probes.

Item Type:Article
Related URLs:
URLURL TypeDescription
Contarini, S.0000-0002-9843-723X
Verza, G.0000-0002-1886-8348
Pisani, A.0000-0002-6146-4437
Hamaus, N.0000-0002-0876-2101
Sahlén, M.0000-0003-0973-4804
Carbone, C.0000-0003-0125-3563
Dusini, S.0000-0002-1128-0664
Marulli, F.0000-0002-8850-0303
Moscardini, L.0000-0002-3473-6716
Renzi, A.0000-0001-9856-1970
Castignani, G.0000-0001-6831-0687
Courtois, H. M.0000-0003-0509-1776
Escoffier, S.0000-0002-2847-7498
Kovács, A.0000-0001-8991-9088
Lavaux, G.0000-0003-0143-8891
Ruppin, F.0000-0002-0955-8954
Wandelt, B. D.0000-0002-5854-8269
Auricchio, N.0000-0003-4444-8651
Baldi, M.0000-0003-4145-1943
Bonino, D.0000-0002-3336-9977
Branchini, E.0000-0002-0808-6908
Brescia, M.0000-0001-9506-5680
Brinchmann, J.0000-0003-4359-8797
Camera, S.0000-0003-3399-3574
Capobianco, V.0000-0002-3309-7692
Carretero, J.0000-0002-3130-0204
Castellano, M.0000-0001-9875-8263
Cavuoti, S.0000-0002-3787-4196
Cledassou, R.0000-0002-8313-2230
Congedo, G.0000-0003-2508-0046
Conselice, C. J.0000-0003-1949-7638
Conversi, L.0000-0002-6710-8476
Copin, Y.0000-0002-5317-7518
Corcione, L.0000-0002-6497-5881
Courbin, F.0000-0003-0758-6510
Cropper, M.0000-0003-4571-9468
Dubath, F.0000-0002-6533-2810
Farrens, S.0000-0002-9594-9387
Fosalba, P.0000-0002-1510-5214
Frailis, M.0000-0002-7400-2135
Franceschi, E.0000-0002-0585-6591
Garilli, B.0000-0001-7455-8750
Gillard, W.0000-0003-4744-9748
Gillis, B.0000-0002-4478-1270
Giocoli, C.0000-0002-9590-7961
Grupp, F.0000-0001-7300-9303
Jahnke, K.0000-0003-3804-2137
Kermiche, S.0000-0002-0302-5735
Kiessling, A.0000-0002-2590-1273
Kilbinger, M.0000-0001-9513-7138
Kunz, M.0000-0003-1676-6126
Kurki-Suonio, H.0000-0002-4618-3063
Ligori, S.0000-0003-4172-4606
Lilje, P. B.0000-0003-4324-7794
Lloro, I.0000-0001-5966-1434
Maiorano, E.0000-0003-2593-4355
Mansutti, O.0000-0001-5758-4658
Marggraf, O.0000-0001-7242-3852
Massey, R.0000-0002-6085-3780
Meneghetti, M.0000-0003-1225-7084
Moresco, M.0000-0002-7616-7136
Padilla, C.0000-0001-7951-0166
Paltani, S.0000-0002-8108-9179
Percival, W. J.0000-0002-0644-5727
Pettorino, V.0000-0002-4203-9320
Pires, S.0000-0002-0249-2104
Polenta, G.0000-0003-4067-9196
Pozzetti, L.0000-0001-7085-0412
Raison, F.0000-0002-7819-6918
Rhodes, J.0000-0002-4485-8549
Saglia, R.0000-0003-0378-7032
Schneider, P.0000-0002-5094-2245
Secroun, A.0000-0003-0505-3710
Seidel, G.0000-0003-2907-353X
Tereno, I.0000-0002-4537-6218
Toledo-Moreo, R.0000-0002-2997-4859
Valentijn, E. A.0000-0003-1032-6680
Valenziano, L.0000-0002-1170-0104
Wang, Y.0000-0002-4749-2984
Weller, J.0000-0002-8282-2010
Zamorani, G.0000-0002-2318-301X
Andreon, S.0000-0002-2041-8784
Maino, D.0000-0002-4761-1242
Mei, S.0000-0002-2849-559X
Additional Information:We acknowledge the grant ASI n.2018-23-HH.0. SC, FM and LM acknowledge the use of computational resources from the parallel computing cluster of the Open Physics Hub ( at the Physics and Astronomy Department in Bologna. GV is supported by Universitá degli Studi di Padova and in part by the project “Combining Cosmic Microwave Background and Large Scale Structure data: an Integrated Approach for Addressing Fundamental Questions in Cosmology”, funded by the MIUR Progetti di Rilevante Interesse Nazionale (PRIN) Bando 2017 – grant 2017YJYZAH. AP is supported by NASA ROSES grant 12-EUCLID12-0004, and NASA grant 15-WFIRST15-0008 to the Nancy Grace Roman Space Telescope Science Investigation Team “Cosmology with the High Latitude Survey”. NH is supported by the Excellence Cluster ORIGINS, which is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy – EXC-2094 – 390783311. MS acknowledges support by the P. E. Filén fellowship and a fellowship at the Swedish Collegium for Advanced Study (SCAS). LM acknowledges support from PRIN MIUR 2017 WSCC32 “Zooming into dark matter and proto-galaxies with massive lensing clusters”. AR acknowledges funding from Italian Ministry of Education, University and Research (MIUR) through the ‘Dipartimenti di eccellenza’ project Science of the Universe. He is supported in part by the project “Combining Cosmic Microwave Background and Large Scale Structure data: an Integrated Approach for Addressing Fundamental Questions in Cosmology”, funded by the MIUR Progetti di Rilevante Interesse Nazionale (PRIN) Bando 2017 – grant 2017YJYZAH We acknowledge use of the Python libraries NumPy (Harris et al. 2020), Matplotlib (Hunter 2007) and ChainConsumer (Hinton 2016). This work has made use of Cosmo-Hub (Carretero et al. 2017; Tallada et al. 2020). CosmoHub has been developed by the Port d’Informació Científica (PIC), maintained through a collaboration ofthe Institut de Física d’Altes Energies (IFAE) and the Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT) and the Institute of Space Sciences (CSIC & IEEC), and was partially funded by the “Plan Estatalde Investigación Científica y Técnica y de Innovación” program of the Spanish government. The Euclid Consortium acknowledges the European Space Agency and a number of agencies and institutes that have supported the development of Euclid, in particular the Academy of Finland, the Agenzia Spaziale Italiana, the Belgian Science Policy, the Canadian Euclid Consortium, the French Centre National d’Etudes Spatiales, the Deutsches Zentrum für Luft- und Raumfahrt, the Danish Space Research Institute, the Fundação para a Ciência e a Tecnologia, the Ministerio de Ciencia e Innovación, the National Aeronautics and Space Administration, the National Astronomical Observatory of Japan, the Netherlandse Onderzoekschool Voor Astronomie, the Norwegian Space Agency, the Romanian Space Agency, the State Secretariat for Education, Research and Innovation (SERI) at the Swiss Space Office (SSO), and the United Kingdom Space Agency. A complete and detailed list is available on the Euclid web site (
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Agenzia Spaziale Italiana (ASI)2018-23-HH.0
Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR)2017YJYZAH
Deutsche Forschungsgemeinschaft (DFG)EXC-2094 – 390783311
Uppsala UniversityUNSPECIFIED
Swedish Collegium for Advanced StudyUNSPECIFIED
Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR)WSCC32
Record Number:CaltechAUTHORS:20230117-372591200.37
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:118844
Deposited By: Research Services Depository
Deposited On:14 Feb 2023 19:21
Last Modified:14 Feb 2023 19:36

Repository Staff Only: item control page