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Measurement of the cosmological distance scale using X-ray and Sunyaev–Zel'dovich effect observations of galaxy clusters

Published online by Cambridge University Press:  26 February 2013

Massimiliano Bonamente ,
John Carlstrom ,
Eric Leitch ,
Marshall Joy ,
Daniel Marrone ,
Adam Mantz ,
Stephen Muchovej ,
Thomas Plagge  and
Erik Reese
Massimiliano Bonamente
Affiliation:
University of Alabama in Huntsville, USA email: [email protected]
John Carlstrom
Affiliation:
University of Chicago, USA
Eric Leitch
Affiliation:
California Institute of Technology and Owens Valley Radio Observatory, USA
Marshall Joy
Affiliation:
NASA Marshall Space Flight Center, USA
Daniel Marrone
Affiliation:
University of Arizona, USA
Adam Mantz
Affiliation:
University of Chicago, USA
Stephen Muchovej
Affiliation:
California Institute of Technology and Owens Valley Radio Observatory, USA
Thomas Plagge
Affiliation:
University of Chicago, USA
Erik Reese
Affiliation:
University of Pennsylvania, USA
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Abstract

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X-ray and Sunyaev–Zeldovich effect (SZE) observations of galaxy clusters can be used to measure their distances independently of the cosmic distance ladder. We have determined the distance to 38 clusters of galaxies in the redshift range 0.14 ≤ z ≤ 0.89 using X-ray data from the Chandra X-ray Observatory and SZE data from the Owens Valley Radio Observatory and the Berkeley–Illinois–Maryland Association interferometric arrays. We measure a Hubble constant of H0 = 76.9+3.9−3.4+10.0−8.0 km s−1 Mpc−1 (statistical followed by systematic uncertainties at 68% confidence) for an ΩM=0.3, ΩΛ=0.7 cosmology. Our determination of the Hubble parameter in the distant Universe agrees with measurements from the Hubble Space Telescope Key Project that probed the nearby Universe.

Keywords

galaxies: clusters: generalcosmic microwave backgroundcosmology: observationsdistance scale
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S289: Advancing the Physics of Cosmic Distances , August 2012 , pp. 339 - 343
Copyright
Copyright © International Astronomical Union 2013

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