High-resolution SZ imaging of clusters of galaxies with the NIKA2 camera at the IRAM 30-m telescope

Abstract : The development of precision cosmology with clusters of galaxies requires high-angular resolution Sunyaev-Zel'dovich (SZ) observations. As for now, arcmin resolution SZ observations (e.g. SPT, ACT and Planck) only allowed detailed studies of the intra cluster medium for low redshift clusters (z<0.2). 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), will bring valuable information in the field of SZ imaging of clusters of galaxies. The NIKA2 SZ observation program will allow us to observe a large sample of clusters (50) at redshifts between 0.4 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.
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  • HAL Id : in2p3-01571605, version 1
  • ARXIV : 1709.01255

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F. Mayet, R. Adam, P. Ade, P. André, M. Arnaud, et al.. High-resolution SZ imaging of clusters of galaxies with the NIKA2 camera at the IRAM 30-m telescope. 29th Rencontres de Blois “Particle Physics and Cosmology”, May 2017, Blois, France. ⟨in2p3-01571605⟩

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