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Satellite galaxy abundance dependency on cosmology in Magneticum simulations. (arXiv:2110.05498v2 [astro-ph.CO] UPDATED)
Sept. 19, 2022, 1:12 a.m. | Antonio Ragagnin, Alessandra Fumagalli, Tiago Castro, Klaus Dolag, Alexandro Saro, Matteo Costanzi, Sebastian Bocquet
cs.LG updates on arXiv.org arxiv.org
Context: Modelling satellite galaxy abundance $N_s$ in Galaxy Clusters (GCs)
is a key element in modelling the Halo Occupation Distribution (HOD), which
itself is a powerful tool to connect observational studies with numerical
simulations. Aims: To study the impact of cosmological parameters on satellite
abundance both in cosmological simulations and in mock observations. Methods:
We build an emulator (HODEmu, \url{https://github.com/aragagnin/HODEmu/}) of
satellite abundance based on cosmological parameters $\Omega_m, \Omega_b,
\sigma_8, h_0$ and redshift $z.$ We train our emulator using \magneticum …
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