Constraining the growth rate by combining multiple future surveys

Simple item page
dc.contributor.authorViljoen, Jan-Albert
dc.contributor.authorFonseca, Jos´e
dc.contributor.authorMaartens, Roy
dc.date.accessioned2021-02-17T07:21:23Z
dc.date.available2021-02-17T07:21:23Z
dc.date.issued2020
dc.description.abstractThe growth rate of large-scale structure provides a powerful consistency test of the standard cosmological model and a probe of possible deviations from general relativity. We use a Fisher analysis to forecast constraints on the growth rate from a combination of next-generation spectroscopic surveys. In the overlap survey volumes, we use a multi-tracer analysis to significantly reduce the effect of cosmic variance. The non-overlap individual survey volumes are included in the Fisher analysis in order to utilise the entire volume. We use the observed angular power spectrum, which naturally includes all wide-angle and lensing effects and circumvents the need for an Alcock-Paczynski correction. Cross correlations between redshift bins are included by using a novel technique to avoid computation of the sub-dominant contributions. Marginalising over the standard cosmological parameters, as well as the clustering bias in each redshift bin, we find that the precision on γ improves on the best single-tracer precision by up to ∼50%en_US
dc.identifier.citationViljoen, J. A. et al. (2020). Constraining the growth rate by combining multiple future surveys. Journal of Cosmology and Astroparticle Physics, 2020(09)en_US
dc.identifier.uri10.1088/1475-7516/2020/09/054
dc.identifier.urihttp://hdl.handle.net/10566/5939
dc.language.isoenen_US
dc.publisherIOP Publishingen_US
dc.subjectDark energy experimentsen_US
dc.subjectGravityen_US
dc.subjectModified gravityen_US
dc.subjectGalaxy surveysen_US
dc.subjectGrowth rateen_US
dc.titleConstraining the growth rate by combining multiple future surveysen_US
dc.typeArticleen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Viljoen_2020_J._Cosmol._Astropart._Phys._2020_054.pdf
Size:
698.92 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Research Articles (Physics)