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The Hubble Constant from SZE Measurements in Low-Redshift Clusters

Brian S. Mason·Steven T. Myers·A. C. S. Readhead
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Abstract

We present a determination of the Hubble constant from measurements of the Sunyaev-Zeldovich Effect (SZE) in an orientation-unbiased sample of 7 z < 0.1 galaxy clusters. With improved X-ray models and a more accurate 32-GHz calibration, we obtain H_O = 64+14-11 +/- 14_sys km/s/Mpc. for a standard CDM cosmology, or 66+14-11 +/- 15_sys km/s/Mpc for a flat LambdaCDM cosmology. The random uncertainty in this result is dominated by intrinsic CMB anisotropies, and the systematic uncertainty is chiefly due to uncertainties in the X-ray spectral models. The implications of this result and future prospects for the method are discussed.

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Brian S. Mason, Steven T. Myers, A. C. S. Readhead. 2001-01-11. The Hubble Constant from SZE Measurements in Low-Redshift Clusters. https://arxiv.org/abs/astro-ph/0101170

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