The WiggleZ Dark Energy Survey: measuring the cosmic expansion history using the Alcock-Paczynski test and distant supernovae
-
Altmetric Citations
Blake, Chris; Glazebrook, Karl; Davis, Tamara; Brough, Sarah; Colless, Matthew; Contreras, Carlos; Couch, Warrick; Croom, Scott M; Drinkwater, Michael John; Forster, Karl; Gilbank, David; Pracy, Michael; Sharp, Robert
Description
Astronomical observations suggest that today's Universe is dominated by a dark energy of unknown physical origin. One of the most notable results obtained from many models is that dark energy should cause the expansion of the Universe to accelerate: but the expansion rate as a function of time has proved very difficult to measure directly. We present a new determination of the cosmic expansion history by combining distant supernovae observations with a geometrical analysis of large-scale galaxy...[Show more]
dc.contributor.author | Blake, Chris | |
---|---|---|
dc.contributor.author | Glazebrook, Karl | |
dc.contributor.author | Davis, Tamara | |
dc.contributor.author | Brough, Sarah | |
dc.contributor.author | Colless, Matthew | |
dc.contributor.author | Contreras, Carlos | |
dc.contributor.author | Couch, Warrick | |
dc.contributor.author | Croom, Scott M | |
dc.contributor.author | Drinkwater, Michael John | |
dc.contributor.author | Forster, Karl | |
dc.contributor.author | Gilbank, David | |
dc.contributor.author | Pracy, Michael | |
dc.contributor.author | Sharp, Robert | |
dc.date.accessioned | 2015-12-10T22:17:05Z | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.uri | http://hdl.handle.net/1885/51245 | |
dc.description.abstract | Astronomical observations suggest that today's Universe is dominated by a dark energy of unknown physical origin. One of the most notable results obtained from many models is that dark energy should cause the expansion of the Universe to accelerate: but the expansion rate as a function of time has proved very difficult to measure directly. We present a new determination of the cosmic expansion history by combining distant supernovae observations with a geometrical analysis of large-scale galaxy clustering within the WiggleZ Dark Energy Survey, using the Alcock-Paczynski test to measure the distortion of standard spheres. Our result constitutes a robust and non-parametric measurement of the Hubble expansion rate as a function of time, which we measure with 10-15 per cent precision in four bins within the redshift range 0.1 < z < 0.9. We demonstrate, in a manner insensitive to the assumed cosmological model, that the cosmic expansion is accelerating. Furthermore, we find that this expansion history is consistent with a cosmological-constant dark energy. | |
dc.publisher | Blackwell Publishing Ltd | |
dc.rights | Author/s retain copyright | |
dc.source | Monthly Notices of the Royal Astronomical Society | |
dc.subject | Keywords: Dark energy; Distance scale; Surveys | |
dc.title | The WiggleZ Dark Energy Survey: measuring the cosmic expansion history using the Alcock-Paczynski test and distant supernovae | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 418 | |
dc.date.issued | 2011 | |
local.identifier.absfor | 020103 - Cosmology and Extragalactic Astronomy | |
local.identifier.ariespublication | u3356449xPUB220 | |
local.identifier.ariespublication | u4630950xPUB85 | |
local.type.status | Published Version | |
local.contributor.affiliation | Blake, Chris, Swinburne University of Technology | |
local.contributor.affiliation | Glazebrook, Karl, Swinburne University of Technology | |
local.contributor.affiliation | Davis, Tamara, University of Queensland | |
local.contributor.affiliation | Brough, Sarah, Australian Astronomical Observatory | |
local.contributor.affiliation | Colless, Matthew, Anglo-Australian Observatory | |
local.contributor.affiliation | Contreras, Carlos, Swinburne University of Technology | |
local.contributor.affiliation | Couch, Warrick, Swinburne University of Technology | |
local.contributor.affiliation | Croom, Scott M, University of Sydney | |
local.contributor.affiliation | Drinkwater, Michael John, University of Queensland | |
local.contributor.affiliation | Forster, Karl, California Institute of Technology | |
local.contributor.affiliation | Gilbank, David, University of Waterloo | |
local.contributor.affiliation | Pracy, Michael, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Sharp, Robert, College of Physical and Mathematical Sciences, ANU | |
local.bibliographicCitation.issue | 3 | |
local.bibliographicCitation.startpage | 1725 | |
local.bibliographicCitation.lastpage | 1735 | |
local.identifier.doi | 10.1111/j.1365-2966.2011.19606.x | |
local.identifier.absseo | 970102 - Expanding Knowledge in the Physical Sciences | |
dc.date.updated | 2016-02-24T09:54:30Z | |
local.identifier.scopusID | 2-s2.0-83055194309 | |
local.identifier.thomsonID | 000298088000020 | |
dcterms.accessRights | Open Access | |
Collections | ANU Research Publications |
Download
File | Description | Size | Format | Image |
---|---|---|---|---|
01_Blake_The_WiggleZ_Dark_Energy_2011.pdf | 457.91 kB | Adobe PDF |
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.
Updated: 17 November 2022/ Responsible Officer: University Librarian/ Page Contact: Library Systems & Web Coordinator