Galaxy cluster angular-size data constraints on dark energy

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dc.contributor.author Chen, Y.
dc.contributor.author Ratra, Bharat V.
dc.date.accessioned 2012-11-07T17:25:47Z
dc.date.available 2012-11-07T17:25:47Z
dc.date.issued 2012-11-07
dc.identifier.uri http://hdl.handle.net/2097/14912
dc.description.abstract We use angular size versus redshift data for galaxy clusters provided by Bonamente and collaborators to place constraints on model parameters of constant and time-evolving dark energy cosmological models. These constraints are compatible with those from other recent data, but are not very restrictive. A joint analysis of the galaxy cluster angular-size data with the more restrictive baryon acoustic oscillation peak length scale and supernova Type Ia apparent-magnitude data, favors a spatially flat cosmological model currently dominated by a time-independent cosmological constant, but does not exclude time-varying dark energy. en_US
dc.language.iso en_US en_US
dc.relation.uri http://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361/201117944&Itemid=129 en_US
dc.rights The original publication is available at http://www.aanda.org/ en_US
dc.subject Cosmology en_US
dc.subject Dark energy en_US
dc.title Galaxy cluster angular-size data constraints on dark energy en_US
dc.type Article (publisher version) en_US
dc.date.published 2012 en_US
dc.citation.doi doi:10.1051/0004-6361/201117944 en_US
dc.citation.epage A104 en_US
dc.citation.jtitle Astronomy & Astrophysics en_US
dc.citation.spage A104 en_US
dc.citation.volume 543 en_US
dc.contributor.authoreid ratra en_US


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