https://vital.seals.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 Statistical Analysis of the Radio-Interferometric Measurement Equation, a derived adaptive weighting scheme, and applications to LOFAR-VLBI observation of the Extended Groth Strip https://vital.seals.ac.za/vital/access/manager/Repository/vital:30942 Wed 12 May 2021 15:54:37 SAST ]]> Observations of cosmic re-ionisation with the Hydrogen Epoch of Reionization Array: simulations of closure phase spectra https://vital.seals.ac.za/vital/access/manager/Repository/vital:42480 0:5 h Mpc-1. We also found that the foreground leakage is worse when edge antennas are included, as they have a more different primary beam compared to antennas at the centre of the array. The leakage magnitude is worse when bright foregrounds appear in the antenna sidelobes, as expected. Our simulations provide a useful framework to interpret observations and assess which power spectrum region is expected to be most contaminated by foreground power leakage.]]> Wed 12 May 2021 14:24:29 SAST ]]> TiRiFiG, a graphical 3D kinematic modelling tool https://vital.seals.ac.za/vital/access/manager/Repository/vital:30558 Thu 13 May 2021 06:10:31 SAST ]]> Observing cosmic reionization with PAPER: polarized foreground simulations and all sky images https://vital.seals.ac.za/vital/access/manager/Repository/vital:29218 0.3 h Mpc -¹ We also analyzed data from the last observing season of PAPER via all-sky imaging with a view to characterize the foregrounds. We generated an all-sky catalogue of 88 sources down to a flux density of 5 Jy. Moreover, we measured both polarized point source and the Galactic diffuse emission, and used these measurements to constrain our model of polarization leakage. We find the leakage due to a population of point sources to be 12% lower than the prediction from our polarized model.]]> Thu 13 May 2021 05:43:39 SAST ]]> Observations of diffuse radio emission in the Abell 773 galaxy cluster https://vital.seals.ac.za/vital/access/manager/Repository/vital:38394 Thu 13 May 2021 05:41:52 SAST ]]> A 150 MHz all sky survey with the Precision Array to Probe the Epoch of Reionization https://vital.seals.ac.za/vital/access/manager/Repository/vital:34556 Thu 13 May 2021 04:40:36 SAST ]]> Foreground simulations for observations of the global 21-cm signal https://vital.seals.ac.za/vital/access/manager/Repository/vital:30557 Thu 13 May 2021 01:46:55 SAST ]]>