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Cosmology with X-ray Cluster Baryons

Eric V. Linder
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Abstract

X-ray cluster measurements interpreted with a universal baryon/gas mass fraction can theoretically serve as a cosmological distance probe. We examine issues of cosmological sensitivity for current (e.g. Chandra X-ray Observatory, XMM-Newton) and next generation (e.g. Con-X, XEUS) observations, along with systematic uncertainties and biases. To give competitive next generation constraints on dark energy, we find that systematics will need to be controlled to better than 1% and any evolution in f_gas (and other cluster gas properties) must be calibrated so the residual uncertainty is weaker than (1+z)^{0.03}.

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Eric V. Linder. 2007-04-10. Cosmology with X-ray Cluster Baryons. https://doi.org/10.1088/1475-7516%2F2007%2F04%2F004

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