NIKA2 performance and cosmology program with galaxy clusters

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution


NIKA2 is a dual-band millimetric camera of thousands of Kinetic Inductance Detectors (KID) installed at the IRAM 30-meter telescope in the Spanish Sierra Nevada. The instrument commissioning was completed in September 2017, and NIKA2 is now open to the scientific community and will operate for the next decade. NIKA2 has well-adapted instrumental design and performance to produce high-resolution maps of the thermal Sunyaev-Zel'dovich (SZ) effect toward intermediate and high redshift galaxy clusters. Moreover, it benefits from a guaranteed time large program dedicated to mapping a representative sample of galaxy clusters via SZ and that includes X-ray follow-ups. The main expected outputs of the SZ large program are the constraints on the redshift evolution of the pressure profile and the mass-observable relation. The first SZ mapping of a galaxy cluster with NIKA2 was produced, as part of the SZ large program. We found a sizable impact of the intracluster medium dynamics on the integrated SZ observables. This shows NIKA2 capabilities for the precise characterisation of the mass-observable relation that is required for accurate cosmology with galaxy clusters.

Original languageEnglish (US)
Title of host publicationProceedings of the 53rd Rencontres de Moriond on Cosmology 2018
EditorsEtienne Auge, Jacques Dumarchez, Jean Tran Thanh Van
Number of pages8
ISBN (Electronic)9791096879076
StatePublished - 2020
Event53rd Rencontres de Moriond on Cosmology 2018 - La Thuile, Italy
Duration: Mar 17 2018Mar 24 2018

Publication series

NameProceedings of the 53rd Rencontres de Moriond on Cosmology 2018


Conference53rd Rencontres de Moriond on Cosmology 2018
CityLa Thuile

ASJC Scopus subject areas

  • Astronomy and Astrophysics


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