Blind detection of galaxy clusters in the COSMOS field via the SZ effect

Cherouuvier, D., Adam, R., Ade, P. ORCID: https://orcid.org/0000-0002-5127-0401, Ajeddig, H., Amarantidis, S., Andre, P., Aussel, H., Barrena, R., Beelen, A., Benoit, A., Berta, S., Bethermin, M., Bongiovanni, A., Bounmy, J., Bing, L.-J., Calvo, M., Catalano, A., De Petris, M., Desert, F. X. and Tucker, C ORCID: https://orcid.org/0000-0002-1851-3918 2026. Blind detection of galaxy clusters in the COSMOS field via the SZ effect. Presented at: mm Universe 2025, Chicago, USA, 23-27 June 2025. EPJ Web of Conferences. , vol.353 Società Italiana di Fisica, 01003. 10.1051/epjconf/202635301003

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Abstract

Clusters of galaxies are powerful cosmological probes, and the thermal Sunyaev Zel’dovich (tSZ) effect provides an efficient method for their detection. High-angular-resolution observations, such as those provided by the NIKA2 camera on the IRAM 30-m telescope, are essential to target low mass and high-redshift clusters. We performed a blind search for galaxy clusters in the COSMOS field using 150 GHz data from the NIKA2 Cosmological Legacy Survey. We applied a matched-filter technique based on a universal pressure profile to extract cluster candidates. The purity and completeness of the sample were assessed using realistic simulations. We detected 16 cluster candidates above an S/N of 4, eight of which have confirmed counterparts.

Item Type:	Conference or Workshop Item - published (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Schools > Physics and Astronomy
Additional Information:	For the full list of authors, please refer to the article webpage - https://doi.org/10.1051/epjconf/202635301003
Publisher:	Società Italiana di Fisica
ISSN:	2100-014X
Date of First Compliant Deposit:	2 March 2026
Last Modified:	02 Mar 2026 13:14
URI:	https://orca.cardiff.ac.uk/id/eprint/185370

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