High-resolution mapping of the hot gas in galaxy clusters is a key tool for cluster-based cosmological analyses. Taking advantage of the NIKA2 millimeter camera operated at the IRAM 30-m telescope, the NIKA2 SZ Large Program seeks to get a high-resolution follow-up of 38 galaxy clusters covering a wide mass range at intermediate to high redshift. The measured SZ fluxes will be essential to calibrate the SZ scaling relation and the galaxy clusters mean pressure profile, needed for the cosmological exploitation of SZ surveys. We present in this study a method to infer a mean pressure profile from cluster observations. We have designed a pipeline encompassing the map-making and the thermodynamical properties estimates from maps. We then combine all the individual fits, propagating the uncertainties on integrated quantities, such as R500 or P500, and the intrinsic scatter coming from the deviation to the standard self-similar model. We validate the proposed method on realistic LPSZ-like cluster simulations.
@article{arxiv.2310.07400,
title = {Towards the first mean pressure profile estimate with the NIKA2 Sunyaev-Zeldovich Large Program},
author = {C. Hanser and R. Adam and P. Ade and H. Ajeddig and P. André and E. Artis and H. Aussel and I. Bartalucci and A. Beelen and A. Benoît and S. Berta and L. Bing and O. Bourrion and M. Calvo and A. Catalano and M. De Petris and F. -X. Désert and S. Doyle and E. F. C. Driessen and G. Ejlali and A. Ferragamo and A. Gomez and J. Goupy and S. Katsioli and F. Kéruzoré and C. Kramer and B. Ladjelate and G. Lagache and S. Leclercq and J. -F. Lestrade and J. F. Macías-Pérez and S. C. Madden and A. Maury and P. Mauskopf and F. Mayet and A. Monfardini and A. Moyer-Anin and M. Muñoz-Echeverría and A. Paliwal and C. Payerne and L. Perotto and G. Pisano and E. Pointecouteau and N. Ponthieu and G. W. Pratt and V. Revéret and A. J. Rigby and A. Ritacco and C. Romero and H. Roussel and F. Ruppin and K. Schuster and A. Sievers and C. Tucker},
journal= {arXiv preprint arXiv:2310.07400},
year = {2023}
}
Comments
to appear in Proc. of the mm Universe 2023 conference, Grenoble (France), June 2023, published by F. Mayet et al. (Eds), EPJ Web of conferences, EDP Sciences