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Cosmic Ecosystems

July 28, 2025 to August 1, 2025
Perimeter Institute for Theoretical Physics
America/Toronto timezone

Perimeter Institute

Constraining cluster and group ecosystems with joint and consistent SZ and x-ray observations

Jul 29, 2025, 12:15 PM
10m
PI/1-100 - Theatre (Perimeter Institute for Theoretical Physics)

PI/1-100 - Theatre

Perimeter Institute for Theoretical Physics

190
Contributed Talk

Speaker

Gerrit Farren (Lawrence Berkeley National Laboratory)

Description

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.

Author

Gerrit Farren (Lawrence Berkeley National Laboratory)

Co-authors

Boryana Hadzhiyska (Lawrence Berkeley National Laboratory) Simone Ferraro (Lawrence Berkeley National Laboratory)

Presentation materials

There are no materials yet.

External references