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Resolving Element Ratios in Galaxy Clusters Using Astro-H/SXS Data

Explore how cluster abundances are measured with Astro-H/SXS, comparing observed SN Ia ejecta and theoretical models. Discover surprising findings on element ratios - [Ar/Fe] and [Ca/Fe]. See how SXS data improves accuracy by studying clusters individually.

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Resolving Element Ratios in Galaxy Clusters Using Astro-H/SXS Data

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  1. Cluster Abundances Measured with Astro-H/SXS Cluster abundances averaged from XMM-Newton observations, fit with a combination of observed SN Ia ejecta from Tycho (green) and theoretical core-collapse models (blue) (after de Plaa et al. 2007). Surprisingly, no combination of these two sources explains the observed ratios of elements, in particular [Ar/Fe] and [Ca/Fe]. The average range for [Ca/Fe] is shown in red, with values for individual clusters from XMM (black) and SXS simulations (blue). SXS will enable tests on a per-cluster basis, rather than as an average, Removing a major source of uncertainty in the results.

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