SPT Clusters with DES and HST Weak Lensing. I. Cluster Lensing and Bayesian Population Modeling of Multi-Wavelength Cluster Datasets
Abstract
We present a Bayesian population modeling method to analyze the abundance of galaxy clusters identified by the South Pole Telescope (SPT) with a simultaneous mass calibration using weak gravitational lensing data from the Dark Energy Survey (DES) and the Hubble Space Telescope (HST). We discuss and validate the modeling choices with a particular focus on a robust, weak-lensing-based mass calibration using DES data. For the DES Year 3 data, we report a systematic uncertainty in weak-lensing mass calibration that increases from 1% at to 10% at , to which we add 2% in quadrature to account for uncertainties in the impact of baryonic effects. We implement an analysis pipeline that joins the cluster abundance likelihood with a multi-observable likelihood for the Sunyaev-Zel'dovich effect, optical richness, and weak-lensing measurements for each individual cluster. We validate that our analysis pipeline can recover unbiased cosmological constraints by analyzing mocks that closely resemble the cluster sample extracted from the SPT-SZ, SPTpol ECS, and SPTpol 500d surveys and the DES Year 3 and HST-39 weak-lensing datasets. This work represents a crucial prerequisite for the subsequent cosmological analysis of the real dataset.
Keywords
Cite
@article{arxiv.2310.12213,
title = {SPT Clusters with DES and HST Weak Lensing. I. Cluster Lensing and Bayesian Population Modeling of Multi-Wavelength Cluster Datasets},
author = {S. Bocquet and S. Grandis and L. E. Bleem and M. Klein and J. J. Mohr and M. Aguena and A. Alarcon and S. Allam and S. W. Allen and O. Alves and A. Amon and B. Ansarinejad and D. Bacon and M. Bayliss and K. Bechtol and M. R. Becker and B. A. Benson and G. M. Bernstein and M. Brodwin and D. Brooks and A. Campos and R. E. A. Canning and J. E. Carlstrom and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and R. Cawthon and C. Chang and R. Chen and A. Choi and J. Cordero and M. Costanzi and L. N. da Costa and M. E. S. Pereira and C. Davis and T. de Haan and J. DeRose and S. Desai and H. T. Diehl and S. Dodelson and P. Doel and C. Doux and A. Drlica-Wagner and K. Eckert and J. Elvin-Poole and S. Everett and I. Ferrero and A. Ferté and A. M. Flores and J. Frieman and J. García-Bellido and M. Gatti and G. Giannini and M. D. Gladders and D. Gruen and R. A. Gruendl and I. Harrison and W. G. Hartley and K. Herner and S. R. Hinton and D. L. Hollowood and W. L. Holzapfel and K. Honscheid and N. Huang and E. M. Huff and D. J. James and M. Jarvis and F. Kéruzoré and G. Khullar and K. Kim and R. Kraft and K. Kuehn and N. Kuropatkin and S. Lee and P. -F. Leget and N. MacCrann and G. Mahler and A. Mantz and J. L. Marshall and J. McCullough and M. McDonald and J. Mena-Fernández and R. Miquel and J. Myles and A. Navarro-Alsina and R. L. C. Ogando and A. Palmese and S. Pandey and A. Pieres and A. A. Plazas Malagón and J. Prat and M. Raveri and C. L. Reichardt and J. Roberson and R. P. Rollins and A. K. Romer and C. Romero and A. Roodman and A. J. Ross and E. S. Rykoff and L. Salvati and C. Sánchez and E. Sanchez and D. Sanchez Cid and A. Saro and T. Schrabback and M. Schubnell and L. F. Secco and I. Sevilla-Noarbe and K. Sharon and E. Sheldon and T. Shin and M. Smith and T. Somboonpanyakul and B. Stalder and A. A. Stark and V. Strazzullo and E. Suchyta and M. E. C. Swanson and G. Tarle and C. To and M. A. Troxel and I. Tutusaus and T. N. Varga and A. von der Linden and N. Weaverdyck and J. Weller and P. Wiseman and B. Yanny and B. Yin and M. Young and Y. Zhang and J. Zuntz},
journal= {arXiv preprint arXiv:2310.12213},
year = {2024}
}
Comments
Accepted for publication in Phys. Rev. D. arXiv v2 corresponds to published article