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arXiv · 2007.11385

The inner gas mass-temperature profile in the core of nearby galaxy clusters

Haonan Liu·Andrew Fabian·Ciro Pinto
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Abstract

We present a mass-temperature profile of gas within the central 10 kpc of a small sample of cool core clusters. The mass of the hottest gas phases, at 1.5 and 0.7 keV, is determined from X-ray spectra from the XMM Reflection Grating Spectrometers. The masses of the partially ionised atomic and the molecular phases are obtained from published H$α$ and CO measurements. We find that the mass of gas at 0.7 keV in a cluster is remarkably similar to that of the molecular gas. Assuming pressure equilibrium between the phases, this means that they occupy volumes differing by $10^5$. The molecular gas is located within the HU nebula which is often filamentary and coincides radially and in position angle with the soft X-ray emitting gas.

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Haonan Liu, Andrew Fabian, Ciro Pinto. 2020-07-22. The inner gas mass-temperature profile in the core of nearby galaxy clusters. https://doi.org/10.1093/mnras%2Fstaa2023

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