New catalogue details over 20,000 radio sources in southern sky

Capturing extragalactic radio sources – predominantly radio galaxies – in large all-sky surveys provides us with crucial insights into how galaxies and their central super-massive black holes interact and evolve together over cosmic time scales. These radio source...

Host-selected supernovae found not to bias cosmological analysis

Type Ia Supernovae (SNe Ia) are “standard candles” that allow astronomers to measure the expansion of the Universe. By measuring distances at various cosmic times using SNe Ia, research in the late 1990s discovered that the Universe is expanding at an...

Deepest-ever low-frequency observations of Lockman Hole field

All galaxies in our Universe (ours included!) move with respect to each other in two ways. Firstly, as has been known for over a century now, the Universe is expanding, moving distant galaxies away from each other. On top of this, galaxies move toward and around...

Study detects new hydrogen absorption system in nearby galaxy

Next-generation radio telescopes will allow us to map out the evolution of gas in galaxies up to a redshift of z = 1.0, revealing what galaxies were like when the Universe was just half its current age. Neutral hydrogen gas (HI), along with stars, forms one of the two...