EPJ Web of Conferences (Jan 2020)

Cluster cosmology with the NIKA2 SZ Large Program

  • Mayet F.,
  • Adam R.,
  • Ade P.,
  • André P.,
  • Andrianasolo A.,
  • Arnaud M.,
  • Aussel H.,
  • Bartalucci I.,
  • Beelen A.,
  • Benoît A.,
  • Bideaud A.,
  • Bourrion O.,
  • Calvo M.,
  • Catalano A.,
  • Comis B.,
  • De Petris M.,
  • Désert F.-X.,
  • Doyle S.,
  • Driessen E.F.C.,
  • Gomez A.,
  • Goupy J.,
  • Kéruzoré F.,
  • Kramer C.,
  • Ladjelate B.,
  • Lagache G.,
  • Leclercq S.,
  • Lestrade J.-F.,
  • Macías-Pérez J.F.,
  • Mauskopf P.,
  • Monfardini A.,
  • Perotto L.,
  • Pisano G.,
  • Pointecouteau E.,
  • Ponthieu N.,
  • Pratt G.W.,
  • Revéret V.,
  • Ritacco A.,
  • Romero C.,
  • Roussel H.,
  • Ruppin F.,
  • Schuster K.,
  • Shu S.,
  • Sievers A.,
  • Tucker C.,
  • Zylka R.

DOI
https://doi.org/10.1051/epjconf/202022800017
Journal volume & issue
Vol. 228
p. 00017

Abstract

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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.