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

Chérouvrier, D.; Adam, R.; Ade, P.; Ajeddig, H.; Amarantidis, S.; André, P.; Aussel, H.; Barrena, R.; Beelen, A.; Benoît, A.; Berta, S.; Béthermin, M.; Bongiovanni, A.; Bounmy, J.; Bourrion, O.; Bing, L. -J.; Calvo, M.; Catalano, A.; De Petris, M.; Désert, F. X.; Doyle, S.; Driessen, E. F. C.; Ejlali, G.; Ferragamo, A.; Fernández-Torreiro, M.; Gomez, A.; Goupy, J.; Hanser, C.; Katsioli, S.; Kéruzoré, F.; Kramer, C.; Ladjelate, B.; Lagache, G.; Leclercq, S.; Lestrade, J. -F.; Macías-Pérez, J. F.; Madden, S. C.; Maury, A.; Mayet, F.; Melin, J. -B.; Monfardini, A.; Moyer-Anin, A.; Muñoz-Echeverría, M.; Myserlis, I.; Neri, R.; Paliwal, A.; Perotto, L.; Pisano, G.; Pointecouteau, E.; Ponthieu, N.; Pratt, G. W.; Revéret, V.; Rigby, A. J.; Ritacco, A.; Roussel, H.; Ruppin, F.; Sánchez-Portal, M.; Savorgnano, S.; Schuster, K.; Sievers, A.; Tucker, C.; Zylka, R.

doi:10.1051/epjconf/202635301003

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.

Blind detection of galaxy clusters in the COSMOS field via the SZ effect / Chérouvrier, D., Adam, R., Ade, P., Ajeddig, H., Amarantidis, S., André, P., Aussel, H., Barrena, R., Beelen, A., Benoît, A., Berta, S., Béthermin, M., Bongiovanni, A., Bounmy, J., Bourrion, O., Bing, L.-J., Calvo, M., Catalano, A., De Petris, M., Désert, F.X., et al.. - In: EPJ WEB OF CONFERENCES. - ISSN 2100-014X. - 353:(2026), pp. 1-6. [10.1051/epjconf/202635301003]