For a clean half of TNG50 galaxies, outer-shell OVII mass is recovered from the OVIIr flux ratio with ~10% bias and 0.2 dex scatter, enabling CGM mass estimates.
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Inferring the mass of the circumgalactic medium using X-ray resonant scattering
For a clean half of TNG50 galaxies, outer-shell OVII mass is recovered from the OVIIr flux ratio with ~10% bias and 0.2 dex scatter, enabling CGM mass estimates.