Testing Gravity with MeerKAT and the SKA
| dc.contributor.advisor | Maartens, Roy | |
| dc.contributor.author | Kopana, Mponeng | |
| dc.date.accessioned | 2021-02-25T12:42:36Z | |
| dc.date.accessioned | 2024-10-30T10:23:21Z | |
| dc.date.available | 2021-02-25T12:42:36Z | |
| dc.date.available | 2024-10-30T10:23:21Z | |
| dc.date.issued | 2020 | |
| dc.description | >Magister Scientiae - MSc | en_US |
| dc.description.abstract | The new 64-dish radio telescope array MeerKAT will be absorbed into the international Square Kilometre Array (SKA) in late 2020s. These two telescope arrays will produce three-dimensional maps of the integrated intensity of the 21cm emission from neutral hydrogen in galaxies, out to redshifts of 1:5 and 3 respectively. These maps contain a signature of the growth of large-scale structure in the Universe. This signature can be uncovered via redshift space distortions of the two-point correlation function, or power spectrum, of the 21cm brightness temperature uctuations. The growth rate governs the amplitude of the anisotropic signal from redshift-space distortions. It is a powerful probe of gravity and its measurement has the potential to test whether general relativity holds. We use models of the 21cm intensity and its power spectrum, starting from a simple linear model of redshift-space distortions and then extending to nonlinear models. With these models, we make Fisher forecast predictions of the precision with which MeerKAT and the SKA can measure the growth rate | en_US |
| dc.identifier.uri | https://hdl.handle.net/10566/16622 | |
| dc.language.iso | en | en_US |
| dc.publisher | University of the Western Cape | en_US |
| dc.rights.holder | University of the Western Cape | en_US |
| dc.subject | MeerKAT | en_US |
| dc.subject | South Africa | en_US |
| dc.subject | Telescope | en_US |
| dc.subject | Square Kilometre Array | en_US |
| dc.title | Testing Gravity with MeerKAT and the SKA | en_US |