Measuring redshift-space distortion with future SKA surveys

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dc.contributor.authorRaccanelli, Alvise
dc.contributor.authorBull, Philip
dc.contributor.authorCamera, Stefano
dc.contributor.authorBacon, David
dc.contributor.authorBlake, Chris
dc.contributor.authorDore, Olivier
dc.contributor.authorFerreira, Pedro G.
dc.contributor.authorMaartens, Roy
dc.contributor.authorSantos, Mario G.
dc.contributor.authorViel, Matteo
dc.contributor.authorZhao, Gong-Bo
dc.date.accessioned2015-10-20T20:16:41Z
dc.date.available2015-10-20T20:16:41Z
dc.date.issued2014
dc.descriptionAdvancing Astrophysics with the Square Kilometre Array June 8-13, 2014 Giardini Naxos, Italyen_US
dc.description.abstractThe peculiar motion of galaxies can be a particularly sensitive probe of gravitational collapse. As such, it can be used to measure the dynamics of dark matter and dark energy as well the nature of the gravitational laws at play on cosmological scales. Peculiar motions manifest themselves as an overall anisotropy in the measured clustering signal as a function of the angle to the line-ofsight, known as redshift-space distortion (RSD). Limiting factors in this measurement include our ability to model non-linear galaxy motions on small scales and the complexities of galaxy bias. The anisotropy in the measured clustering pattern in redshift-space is also driven by the unknown distance factors at the redshift in question, the Alcock-Paczynski distortion. This weakens growth rate measurements, but permits an extra geometric probe of the Hubble expansion rate. In this short chapter we will briefly describe the scientific background to the RSD technique, and forecast the potential of the SKA phase 1 and the SKA2 to measure the growth rate using both galaxy catalogues and intensity mapping, assessing their competitiveness with current and future optical galaxy surveys.en_US
dc.identifier.citationRaccanelli, A., et al., (2014). Measuring redshift-space distortion with future SKA surveys. Paper presented at Advancing Astrophysics with the Square Kilometre Array, Giardini Naxos, Italy. PoS(AASKA14)031en_US
dc.identifier.issn1824-8039
dc.identifier.urihttp://hdl.handle.net/10566/1820
dc.language.isoenen_US
dc.privacy.showsubmitterfalse
dc.publisherProceedings of Scienceen_US
dc.rightsBased on the open access philosophy proceedings published on PoS can be read free of charge. No subscription nor registration is required of readers. This article can be accessed at http://pos.sissa.it/archive/conferences/215/031/AASKA14_031.pdf
dc.status.ispeerreviewedtrue
dc.subjectGalaxiesen_US
dc.subjectSquare Kilometre Array (SKA)en_US
dc.subjectDark matteren_US
dc.subjectDark energyen_US
dc.subjectGravitational lawsen_US
dc.subjectCosmological scalesen_US
dc.subjectAlcock-Paczynski distortionen_US
dc.subjectIntensity mappingen_US
dc.subjectRadio surveysen_US
dc.subjectRedshift-Space Distortion (RSD)en_US
dc.titleMeasuring redshift-space distortion with future SKA surveysen_US
dc.typeConference Paperen_US

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