MultiDark-Clusters: Galaxy Cluster Mock Light-Cones, eROSITA and the Cluster Power Spectrum
Fabio Zandanel, Mattia Fornasa, Francisco Prada, Thomas H. Reiprich,, Florian Pacaud, Anatoly Klypin

TL;DR
This paper presents a method to generate large mock galaxy cluster light-cones incorporating baryonic physics for future X-ray surveys like eROSITA, enabling studies of cluster properties and cosmology.
Contribution
We developed a phenomenological model to add baryonic physics to dark-matter-only simulations, creating extensive mock light-cones for eROSITA predictions and analysis.
Findings
Generated over 400 GB of mock light-cones for eROSITA.
Explored variance among multiple light-cones and observers.
Discussed the potential of angular power spectrum analyses for cluster studies.
Abstract
Cosmological simulations are fundamental tools to study structure formation and the astrophysics of evolving structures, in particular clusters of galaxies. While hydrodynamical simulations cannot sample efficiently large volumes and explore different cosmologies at the same time, N-body simulations lack the baryonic physics that is crucial to determine the observed properties of clusters. One solution is to use (semi-)analytical models to implement the needed baryonic physics. In this way, we can generate the many mock universes that will be required to fully exploit future large sky surveys, such as that from the upcoming eROSITA X-ray telescope. We developed a phenomenological model based on observations of clusters to implement gas density and temperature information on the dark-matter-only halos of the MultiDark simulations. We generate several full-sky mock light-cones of clusters…
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