Issue |
A&A
Volume 642, October 2020
|
|
---|---|---|
Article Number | A191 | |
Number of page(s) | 66 | |
Section | Cosmology (including clusters of galaxies) | |
DOI | https://doi.org/10.1051/0004-6361/202038071 | |
Published online | 20 October 2020 |
Euclid preparation
VII. Forecast validation for Euclid cosmological probes
1
Institut de Recherche en Astrophysique et Planétologie (IRAP), Université de Toulouse, CNRS, UPS, CNES, 14 Av. Edouard Belin, 31400 Toulouse, France
2
INFN-Sezione di Torino, Via P. Giuria 1, 10125 Torino, Italy
3
Dipartimento di Fisica, Universitá degli Studi di Torino, Via P. Giuria 1, 10125 Torino, Italy
4
Dipartimento di Fisica, Universitá degli Studi di Milano “Aldo Pontremoli”, Via Celoria 16, 20133 Milano, Italy
5
INFN-Sezione di Milano, Via Celoria 16, 20133 Milano, Italy
6
INAF-IASF Milano, Via Alfonso Corti 12, 20133 Milano, Italy
7
INAF-Osservatorio Astronomico di Roma, Via Frascati 33, 00078 Monte Porzio Catone, Italy
8
AIM, CEA, CNRS, Université Paris-Saclay, Université Paris Diderot, Sorbonne Paris Cité, 91191 Gif-sur-Yvette, France
9
CEICO, Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, Praha 8, Czech Republic
10
CEA Saclay, DFR/IRFU, Service d’Astrophysique, Bat. 709, 91191 Gif-sur-Yvette, France
11
Institut d’Astrophysique de Paris, 98bis Boulevard Arago, 75014 Paris, France
12
Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
13
Université de Genève, Département de Physique Théorique and Centre for Astroparticle Physics, 24 quai Ernest-Ansermet, 1211 Genève 4, Switzerland
14
University of California, Berkeley, CA 94720, USA
15
Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UK
16
Institute Lorentz, Leiden University, PO Box 9506, Leiden 2300 RA, The Netherlands
17
School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS, UK
18
Université St Joseph, UR EGFEM, Faculty of Sciences, Beirut, Lebanon
19
Max Planck Institute for Extraterrestrial Physics, Giessenbachstr. 1, 85748 Garching, Germany
20
Departamento de Física, FCFM, Universidad de Chile, Blanco Encalada 2008, Santiago, Chile
21
Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, 08193 Barcelona, Spain
22
Institut d’Estudis Espacials de Catalunya (IEEC), 08034 Barcelona, Spain
23
Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
24
INAF-Osservatorio Astronomico di Brera, Via Brera 28, 20122 Milano, Italy
25
INAF-Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate, Italy
26
Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain
27
Instituto de Astrofísica de Canarias, Calle Vía Làctea s/n, 38204, San Cristóbal de la Laguna, Tenerife, Spain
28
INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti, 93/3, 40129 Bologna, Italy
29
Dipartimento di Fisica e Astronomia, Universitá di Bologna, Via Gobetti 93/2, 40129 Bologna, Italy
30
INFN-Sezione di Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy
31
Universitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität München, Scheinerstrasse 1, 81679 München, Germany
32
INAF-Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, 34131 Trieste, Italy
33
INAF-Osservatorio Astrofisico di Torino, Via Osservatorio 20, 10025 Pino Torinese (TO), Italy
34
APC, AstroParticule et Cosmologie, Université Paris Diderot, CNRS/IN2P3, CEA/lrfu, Observatoire de Paris, Sorbonne Paris Cité, 10 Rue Alice Domon et Léonie Duquet, 75205 Paris Cedex 13, France
35
Department of Astronomy, University of Geneva, ch. d’Écogia 16, 1290 Versoix, Switzerland
36
INFN-Sezione di Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
37
Department of Mathematics and Physics, Roma Tre University, Via della Vasca Navale 84, 00146 Rome, Italy
38
INAF-Osservatorio Astronomico di Capodimonte, Via Moiariello 16, 80131 Napoli, Italy
39
Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal
40
INFN-Bologna, Via Irnerio 46, 40126 Bologna, Italy
41
Dipartimento di Fisica e Scienze della Terra, Universitá degli Studi di Ferrara, Via Giuseppe Saragat 1, 44122 Ferrara, Italy
42
INAF, Istituto di Radioastronomia, Via Piero Gobetti 101, 40129 Bologna, Italy
43
Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, Nice, France
44
Institut de Física d’Altes Energies IFAE, 08193 Bellaterra, Barcelona, Spain
45
Instituto de Astrofísica e Ciências do Espaço, Faculdade de Ciências, Universidade de Lisboa, Tapada da Ajuda 1349-018, Lisboa, Portugal
46
Department of Physics “E. Pancini”, University Federico II, Via Cinthia 6, 80126 Napoli, Italy
47
INFN section of Naples, Via Cinthia 6, 80126 Napoli, Italy
48
INAF-Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125 Firenze, Italy
49
Centre National d’Etudes Spatiales, Toulouse, France
50
Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
51
University of Nottingham, University Park, Nottingham NG7 2RD, UK
52
ESAC/ESA, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, 28692 Villanueva de la Cañada, Madrid, Spain
53
Université de Lyon, 69622 Lyon, France
54
Université de Lyon 1, Villeurbanne, France
55
CNRS/IN2P3, Institut de Physique Nucléaire de Lyon, Villeurbanne, France
56
Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, Edifício C8, Campo Grande, 1749-016 Lisboa, Portugal
57
Instituto de Astrofísica e Ciências do Espaço, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
58
Aix-Marseille Univ, CNRS, CNES, LAM, Marseille, France
59
Department of Physics, Oxford University, Keble Road, Oxford OX1 3RH, UK
60
INFN-Padova, Via Marzolo 8, 35131 Padova, Italy
61
Department of Physics & Astronomy, University of Sussex, Brighton BN1 9QH, UK
62
Centre for Extragalactic Astronomy, Department of Physics, Durham University, South Road, Durham DH1 3LE, UK
63
Aix-Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France
64
Leiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands
65
von Hoerner & Sulger GmbH, SchloßPlatz 8, 68723 Schwetzingen, Germany
66
Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
67
Department of Physics and Helsinki Institute of Physics, Gustaf Hällströmin katu 2, 00014 University of Helsinki, Finland
68
Institut de Physique Nucléaire de Lyon, 4, Rue Enrico Fermi, 69622 Villeurbanne Cedex, France
69
Institute of Theoretical Astrophysics, University of Oslo, PO Box 1029 , Blindern 0315, Oslo, Norway
70
Istituto Nazionale di Astrofisica (INAF) – Osservatorio di Astrofisica e Scienza dello Spazio (OAS), Via Gobetti 93/3, 40127 Bologna, Italy
71
Institute for Computational Cosmology, Department of Physics, Durham University, South Road, Durham DH1 3LE, UK
72
INAF-Osservatorio Astronomico di Padova, Via dell’Osservatorio 5, 35122 Padova, Italy
73
University of Paris Denis Diderot, University of Paris Sorbonne Cité (PSC), 75205 Paris Cedex 13, France
74
Sorbonne Université, Observatoire de Paris, Université PSL, CNRS, LERMA, 75014 Paris, France
75
Observatoire de Sauverny, Ecole Polytechnique Fédérale de Lausanne, 1290 Versoix, Switzerland
76
INFN, Sezione di Lecce, Via per Arnesano, 193, 73100 Lecce, Italy
77
Department of Mathematics and Physics E. De Giorgi, University of Salento, Via per Arnesano, CP-I93, 73100 Lecce, Italy
78
Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5, Canada
79
Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
80
Centre for Astrophysics, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
81
Space Science Data Center, Italian Space Agency, Via del Politecnico snc, 00133 Roma, Italy
82
European Space Agency/ESTEC, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands
83
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
84
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avenida Complutense 40, 28040 Madrid, Spain
85
Universidad Politécnica de Cartagena, Departamento de Electrónica y Tecnología de Computadoras, 30202 Cartagena, Spain
86
Kapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The Netherlands
87
IFPU, Institute for Fundamental Physics of the Universe, Via Beirut 2, 34151 Trieste, Italy
88
SISSA, International School for Advanced Studies, Via Bonomea 265, 34136 Trieste TS, Italy
89
INFN, Sezione di Trieste, Via Valerio 2, 34127 Trieste TS, Italy
90
Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125, USA
91
CURL & IRMP, Louvain University, 2 Chemin du Cyclotron, 1348 Louvain-la-Neuve, Belgium
92
NaXys, University of Namur, Rempart de la Vierge 8, 5000 Namur, Belgium
Received:
2
April
2020
Accepted:
15
July
2020
Aims. The Euclid space telescope will measure the shapes and redshifts of galaxies to reconstruct the expansion history of the Universe and the growth of cosmic structures. The estimation of the expected performance of the experiment, in terms of predicted constraints on cosmological parameters, has so far relied on various individual methodologies and numerical implementations, which were developed for different observational probes and for the combination thereof. In this paper we present validated forecasts, which combine both theoretical and observational ingredients for different cosmological probes. This work is presented to provide the community with reliable numerical codes and methods for Euclid cosmological forecasts.
Methods. We describe in detail the methods adopted for Fisher matrix forecasts, which were applied to galaxy clustering, weak lensing, and the combination thereof. We estimated the required accuracy for Euclid forecasts and outline a methodology for their development. We then compare and improve different numerical implementations, reaching uncertainties on the errors of cosmological parameters that are less than the required precision in all cases. Furthermore, we provide details on the validated implementations, some of which are made publicly available, in different programming languages, together with a reference training-set of input and output matrices for a set of specific models. These can be used by the reader to validate their own implementations if required.
Results. We present new cosmological forecasts for Euclid. We find that results depend on the specific cosmological model and remaining freedom in each setting, for example flat or non-flat spatial cosmologies, or different cuts at non-linear scales. The numerical implementations are now reliable for these settings. We present the results for an optimistic and a pessimistic choice for these types of settings. We demonstrate that the impact of cross-correlations is particularly relevant for models beyond a cosmological constant and may allow us to increase the dark energy figure of merit by at least a factor of three.
Key words: cosmology: observations / cosmological parameters / cosmology: theory
© Euclid Collaboration 2020
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.
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