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NIKA2: a mm camera for cluster cosmology

Macias-Pérez, Juan-Francisco, Adam, R., Ade, P. ORCID:, André, P., Arnaud., M., Aussel, H., Bartalucci, I., Beelen, A., Benoit, A., Bideaud, A., Bourrion, O., Calvo, M., Catalano, A., Comis, B., Désert, F.-X., Doyle, S. ORCID:, Driessen, E.F.C., Goupy, J., Kramer, C., Lagache, G., Leclercq, S., Lestrade, J.F., Mauskopf, P. D. ORCID:, Mayet, F., Monfardini, A., Perotto, L., Pointecouteau, E., Pisano, G. ORCID:, Ponthieu, N., Pratt, G.W., Revéret, V., Ritacco, A., Romero, C., Roussel, H., Ruppin, F., Schuster, K., Sievers, A., Tucker, Carole ORCID:, Zylka, R. and De Petris, M. 2018. NIKA2: a mm camera for cluster cosmology. Presented at: European Physical Society conference on High Energy Physics, Venice, 5-7 July 2017. Proceedings of Science. 10.22323/1.314.0042

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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.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
ISSN: 1824-8039
Date of First Compliant Deposit: 3 September 2018
Date of Acceptance: 1 November 2017
Last Modified: 23 Jul 2023 17:48

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