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 ({\it 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.}
@article{arxiv.1711.07088,
title = {NIKA2: a mm camera for cluster cosmology},
author = {J. F. Macias-Perez and R. Adam and P. Ade and P. Andre and M. Arnaud and H. Aussel and I. Bartalucci and A. Beelen and A. Benoit and A. Bideaud and O. Bourrion and M. Calvo and A. Catalano and B. Comis and M. De Petris and F. -X. Désert and S. Doyle and E. F. C. Driessen and J. Goupy and C. Kramer and G. Lagache and S. Leclercq and J. F. Lestrade and P. Mauskopf and F. Mayet and A. Monfardini and L. Perotto and E. Pointecouteau and G. Pisano and N. Ponthieu and G. W. Pratt and V. Revéret and A. Ritacco and C. Romero and H. Roussel and F. Ruppin and K. Schuster and A. Sievers and C. Tucker and R. Zylka},
journal= {arXiv preprint arXiv:1711.07088},
year = {2017}
}