NIKA2: a millimeter camera for cluster cosmology

J.F. Macias-Perez 1 R. Adam 1, 2 P. Ade 3 P. André 4 M. Arnaud 4 H. Aussel 4 I. Bartalucci 4 A. Beelen 5 A. Benoit 6 A. Bideaud 6 O. Bourrion 1 M. Calvo 7 A. Catalano 1 B. Comis 1 M. De Petris F.-X. Désert 8 S. Doyle 3 E. F. C. Driessen 9 J. Goupy 6 C. Kramer 10 Guilaine Lagache 11 S. Leclercq 9 J.F. Lestrade 12 P. Mauskopf 3, 13 F. Mayet 1 A. Monfardini 6 L. Perotto 1 E. Pointecouteau 14 G. Pisano 3 N. Ponthieu 8 G.W. Pratt 4 V. Reveret 4 A. Ritacco 10 C. Romero 9 H. Roussel 15 F. Ruppin 1 K. Schuster 9 A. Sievers 10 C. Tucker 3 R. Zylka 9
1 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
2 LAGRANGE - Joseph Louis LAGRANGE
3 Cardiff University
4 AIM - UMR 7158 - UMR E 9005 - Astrophysique Interactions Multi-échelles
5 IAS - Institut d'astrophysique spatiale
6 HELFA - Hélium : du fondamental aux applications
NEEL - Institut Néel
7 Cryo - Cryogénie
NEEL - Institut Néel
8 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
9 IRAM - Institut de RadioAstronomie Millimétrique
10 IRAM - Instituto de RadioAstronomía Milimétrica
11 LAM - Laboratoire d'Astrophysique de Marseille
12 LERMA - Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique
13 ASU - Arizona State University [Tempe]
14 IRAP - Institut de recherche en astrophysique et planétologie
15 IAP - Institut d'Astrophysique de Paris
Abstract : Galaxy clusters constitute a major cosmological probe. However, Planck 2015 results have shown a weak tension between CMB-derived and cluster-derived cosmological parameters. This tension might be due to poor knowledge of the cluster mass and observable relationship. As for now, arcmin resolution Sunyaev-Zeldovich (SZ) observations (e.g. SPT, ACT and Planck) only allowed detailed studies of the intra cluster medium for low redshift clusters (z < 0:2). For high redshift clusters ( z > 0:5) high resolution and high sensitivity SZ observations are needed. With both a wide field of view (6.5 arcmin) and a high angular resolution (17.7 and 11.2 arcsec at 150 and 260 GHz), the NIKA2 camera installed at the IRAM 30-m telescope (Pico Veleta, Spain) is particularly well adapted for these observations. The NIKA2 SZ observation program will map a large sample of clusters (50) at redshifts between 0.5 and 0.9. As a pilot study for NIKA2, several clusters of galaxies have been observed with the pathfinder, NIKA, at the IRAM 30-m telescope to cover the various configurations and observation conditions expected for NIKA2.
Type de document :
Communication dans un congrès
European Physical Society Conference on High Energy Physics (EPS-HEP2017), Jul 2017, Venice, Italy. Proceeding of Sciences, EPS-HEP2017, pp.042, 0019, 〈https://indico.cern.ch/event/466934/〉
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J.F. Macias-Perez, R. Adam, P. Ade, P. André, M. Arnaud, et al.. NIKA2: a millimeter camera for cluster cosmology . European Physical Society Conference on High Energy Physics (EPS-HEP2017), Jul 2017, Venice, Italy. Proceeding of Sciences, EPS-HEP2017, pp.042, 0019, 〈https://indico.cern.ch/event/466934/〉. 〈in2p3-01559502〉

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