PIRSA:25070026 Conference Cosmology

DOI10.48660/25070026

Conference/School: Cosmic Ecosystems

Farren, G. (2025). Constraining cluster and group ecosystems with joint and consistent SZ and x-ray observations. Perimeter Institute. https://pirsa.org/25070026

Farren, Gerrit. Constraining cluster and group ecosystems with joint and consistent SZ and x-ray observations. Perimeter Institute, Jul. 29, 2025, https://pirsa.org/25070026 

@misc{ pirsa_PIRSA:25070026,
  doi = {10.48660/25070026},
  url = {https://pirsa.org/25070026},
  author = {Farren, Gerrit},
  keywords = {Cosmology},
  language = {en},
  title = {Constraining cluster and group ecosystems with joint and consistent SZ and x-ray observations},
  publisher = {Perimeter Institute},
  year = {2025},
  month = {jul},
  note = {PIRSA:25070026 see, \url{https://pirsa.org}}
}

Abstract

I will present work on measuring thermal and kinetic Sunyaev-Zeldovich signals alongside x-ray fluxes from clusters and groups of galaxies identified either in the DESI Legacy Survey or selected from eROISTA x-ray observations. I will show joint inference of matter and gas density as well as temperature and x-ray emissivity to better understand the structure within these objects and the feedback processes which are relevant to the modelling of cosmological observables. Among other aspects, I will address claims of discrepancy between the feedback observed in x-ray cross-correlations with cosmic shear and inferred from kSZ observations.

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