The hydrostatic mass bias in The Three Hundred clusters

The assumption of Hydrostatic equilibrium (HE) is often used in observations to estimate galaxy clusters masses. We use a set of almost 300 simulated clusters from T he T hree H undred Project, to estimate the cluster HE mass and the bias deriving from it. We study the dependence of the bias on seve...

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Bibliographic Details
Published in:EPJ Web of conferences 2022, Vol.257, p.20
Main Authors: Gianfagna, Giulia, Rasia, Elena, Cui, Weiguang, De Petris, Marco, Yepes, Gustavo
Format: Article
Language:English
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Summary:The assumption of Hydrostatic equilibrium (HE) is often used in observations to estimate galaxy clusters masses. We use a set of almost 300 simulated clusters from T he T hree H undred Project, to estimate the cluster HE mass and the bias deriving from it. We study the dependence of the bias on several dynamical state indicators across a redshift range from 0.07 to 1.3, finding no dependence between them. Moreover, we focus our attention on the evolution of the HE bias during the merger phase, where the bias even reaches negative values due to an overestimation of the mass with HE.
ISSN:2100-014X
2100-014X
DOI:10.1051/epjconf/202225700020