MWA Project Meeting - 2025

The M(agnificent) W(idely-)A(waited) G4Jy Sample - Online presentation

27 Aug 2025, 14:10

20m

Auditorium (Australian Resources Research Centre (ARRC))

Presentation Galactic and Extragalactic (GEG)

Speaker

Dr Sarah White (South African Astronomical Observatory)

Description

Thanks to MWA observations of the entire southern sky, through the GLEAM Survey, it has been possible to create a legacy compilation of the brightest radio-sources (S$_{\mathrm{151\,MHz}}$ > 4 Jy) in preparation for the SKA: the GLEAM 4-Jy (G4Jy) Sample (White et al. 2020a, 2020b). In this talk I will present the results of widely-awaited multiwavelength analysis, which includes the calculation of intrinsic properties that reveal the true power of these powerful radio-galaxies (White et al., in prep.). This is thanks (in large part) to collating spectroscopic redshifts for 34% of the sample, with 169 of these being new redshifts courtesy of dedicated follow-up on the Southern African Large Telescope (White et al. 2025; Sejake et al., in prep.). I will conclude with a list of 'next steps' to encourage continued participation from the MWA Collaboration.