Combining Planck and SPT Cluster Catalogs: Cosmological Analysis and Impact on the Planck Scaling Relation Calibration

• Published in: The Astrophysical Journal
• Main Authors: Salvati, L., Saro, A., Bocquet, S., Costanzi, M., Ansarinejad, B., Benson, B.A., Bleem, L.E., Calzadilla, M.S., Carlstrom, J.E., Chang, C.L., Chown, R., Crites, A.T., Dehaan, T., Dobbs, M.A., Everett, W.B., Floyd, B., Grandis, S., George, E.M., Halverson, N.W., Holder, G.P., Holzapfel, W.L., Hrubes, J.D., Lee, A.T., Luong-Van, D., Mcdonald, M., Mcmahon, J.J., Meyer, S.S., Millea, M., Mocanu, L.M., Mohr, J.J., Natoli, T., Omori, Y., Padin, S., Pryke, C., Reichardt, C.L., Ruhl, J.E., Ruppin, F., Schaffer, K.K., Schrabback, T., Shirokoff, E., Staniszewski, Z., Stark, A.A., Vieira, J.D., Williamson, R.
• Other Authors: Institut d'astrophysique spatiale (IAS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES), Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2022
• Subjects: [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]; South pole
• Online Access: https://hal.science/hal-03512266; https://hal.science/hal-03512266/document; https://hal.science/hal-03512266/file/Salvati_2022_ApJ_934_129.pdf; https://doi.org/10.3847/1538-4357/ac7ab4

International audience We provide the first combined cosmological analysis of the South Pole Telescope (SPT) and Planck cluster catalogs. The aim is to provide an independent calibration for Planck scaling relations, exploiting the cosmological constraining power of the SPT-SZ cluster catalog and its dedicated weak lensing (WL) and X-ray follow-up observations. We build a new version of the Planck cluster likelihood. In the νΛ CDM scenario, focusing on the mass slope and mass bias of Planck scaling relations, we find and , respectively. The results for the mass slope show a ∼4 σ departure from the self-similar evolution, α$_{SZ}$ ∼ 1.8. This shift is mainly driven by the matter density value preferred by SPT data, Ω$_{m}$ = 0.30 ± 0.03, lower than the one obtained by Planck data alone, . The mass bias constraints are consistent both with outcomes of hydrodynamical simulations and external WL calibrations, (1 − b) ∼ 0.8, and with results required by the Planck cosmic microwave background cosmology, (1 − b) ∼ 0.6. From this analysis, we obtain a new catalog of Planck cluster masses M$_{500}$. We estimate the ratio between the published Planck M$_{SZ}$ masses and our derived masses M$_{500}$, as a “measured mass bias,” . We analyze the mass, redshift, and detection noise dependence of , finding an increasing trend toward high redshift and low mass. These results mimic the effect of departure from self-similarity in cluster evolution, showing different dependencies for the low-mass, high-mass, low-z, and high-z regimes.