Cluster cosmology with the NIKA2 SZ Large Program

F. Mayet (1) , R. Adam (2) , P. Ade , P. André (3) , A. Andrianasolo (4) , M. Arnaud (3) , H. Aussel (3) , I. Bartalucci (3) , A. Beelen (5) , A. Benoît (6) , A. Bideaud (6) , O. Bourrion (1) , M. Calvo (7) , A. Catalano (1) , B. Comis (1) , M. de Petris , F.X. Désert (4) , S. Doyle , E.F.C. Driessen (8) , A. Gomez , J. Goupy (6) , F. Kéruzoré (1) , C. Kramer (9) , B. Ladjelate (9) , G. Lagache (10) , S. Leclercq (8) , J.F. Lestrade (11) , J.F. Macías-Pérez (1) , P. Mauskopf , A. Monfardini (6) , L. Perotto (1) , G. Pisano , E. Pointecouteau (12) , N. Ponthieu (4) , G.W. Pratt (3) , V. Revéret (3) , A. Ritacco (9) , C. Romero (8) , H. Roussel (13) , F. Ruppin , K. Schuster (8) , S. Shu (8) , A. Sievers (9) , C. Tucker , R. Zylka (8)

1 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
2 LLR - Laboratoire Leprince-Ringuet
3 AIM (UMR7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation
4 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
5 IAS - Institut d'astrophysique spatiale
6 NEEL - HELFA - Hélium : du fondamental aux applications
7 NEEL - Cryo - Cryogénie
8 IRAM - Institut de RadioAstronomie Millimétrique
9 IRAM - Instituto de RadioAstronomía Milimétrica
10 LAM - Laboratoire d'Astrophysique de Marseille
11 LERMA - Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique et Atmosphères = Laboratory for Studies of Radiation and Matter in Astrophysics and Atmospheres
12 IRAP - Institut de recherche en astrophysique et planétologie
13 IAP - Institut d'Astrophysique de Paris

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.

Domaines: Astrophysique [astro-ph]

F. Mayet, R. Adam, P. Ade, P. André, A. Andrianasolo, et al.. Cluster cosmology with the NIKA2 SZ Large Program. mm Universe @ NIKA2, Jun 2019, Grenoble, France. pp.00017, ⟨10.1051/epjconf/202022800017⟩. ⟨hal-02448034⟩