The Hubble Constant from SZE Measurements in Low-Redshift Clusters
Astrophysics
2007-05-23 v1
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.
Keywords
Cite
@article{arxiv.astro-ph/0101170,
title = {The Hubble Constant from SZE Measurements in Low-Redshift Clusters},
author = {Brian S. Mason and Steven T. Myers and A. C. S. Readhead},
journal= {arXiv preprint arXiv:astro-ph/0101170},
year = {2007}
}
Comments
6 pp., 1 figure, submitted to Proc. 9th Marcel Grossman Mtg. (electronic version)