https://doi.org/10.1051/epjconf/202022800017
Cluster cosmology with the NIKA2 SZ Large Program
1
Univ. Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 53, av. des Martyrs, 38000 Grenoble, France
2
LLR, CNRS, École Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
3
Centro de Estudios de Fisica del Cosmos de Aragon (CEFCA), Plaza San Juan, 1, planta 2, E-44001, Teruel, Spain
4
Astronomy Instrumentation Group, University of Cardiff, UK
5
AIM, CEA, CNRS, Université Paris-Saclay, Université Paris Diderot, Sorbonne Paris Cité, 91191 Gif-sur-Yvette, France
6
Univ. Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
7
Institut d’Astrophysique Spatiale (IAS), CNRS and Université Paris Sud, Orsay, France
8
Institut Néel, CNRS and Université Grenoble Alpes, France
9
Dipartimento di Fisica, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy
10
Institut de RadioAstronomie Millimétrique (IRAM), Grenoble, France
11
Centro de Astrobiología (CSIC-INTA), Torrejón de Ardoz, 28850 Madrid, Spain
12
Instituto de Radioastronomía Milimétrica (IRAM), Granada, Spain
13
Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France
14
LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMCUniv. Paris 06, 75014 Paris, France
15
School of Earth and Space Explo. and Dep. of Physics, Arizona State University, Tempe, AZ 85287
16
Univ. de Toulouse, UPS-OMP, Institut de Recherche en Astrophysique et Planétologie, Toulouse, France
17
CNRS, IRAP, 9 Av. colonel Roche, BP 44346, F-31028 Toulouse cedex 4, France
18
Institut d’Astrophysique de Paris, CNRS (UMR7095), 98 bis boulevard Arago, 75014 Paris, France
19
Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
* e-mail: mayet@lpsc.in2p3.fr
Published online: 27 January 2020
The main limiting factor of cosmological analyses based on thermal Sunyaev-Zel’dovich (SZ) cluster statistics comes from the bias and systematic uncertainties that affect the estimates of the mass of galaxy clusters. High-angular resolution SZ observations at high redshift are needed to study a potential redshift or morphology dependence of both the mean pressure profile and of the mass-observable scaling relation used in SZ cosmological analyses. The NIKA2 camera is a new generation continuum instrument installed at the IRAM 30-m telescope. With a large field of view, a high angular resolution and a high-sensitivity, the NIKA2 camera has unique SZ mapping capabilities. In this paper, we present the NIKA2 SZ large program, aiming at observing a large sample of clusters at redshifts between 0.5 and 0.9, and the characterization of the first cluster oberved with NIKA2.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
