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Measuring H0 from the 6dF Galaxy Survey and future low-redshift surveys

Published online by Cambridge University Press:  26 February 2013

Matthew Colless ,
Florian Beutler  and
Chris Blake
Matthew Colless
Affiliation:
Australian Astronomical Observatory, P. O. Box 915, North Ryde, NSW 1670, Australia email: [email protected]
Florian Beutler
Affiliation:
International Centre for Radio Astronomy Research, University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA email: [email protected]
Chris Blake
Affiliation:
Centre for Astrophysics & Supercomputing, Swinburne University of Technology, P. O. Box 218, Hawthorn, VIC 3122, Australia email: [email protected]
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Abstract

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Baryon acoustic oscillations (BAO) at low redshift provide a precise and largely model-independent way to measure the Hubble constant, H0. The 6dF Galaxy Survey measurement of the BAO scale gives a value of H0 = 67 ± 3.2 km s−1 Mpc−1, achieving a 1σ precision of 5%. With improved analysis techniques, the planned wallaby (Hi) and taipan (optical) redshift surveys are predicted to measure H0 to 1–3% precision.

Keywords

cosmology: observationssurveysdistance scalelarge-scale structure of universe
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S289: Advancing the Physics of Cosmic Distances , August 2012 , pp. 319 - 322
Copyright
Copyright © International Astronomical Union 2013

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