Colloquium

The Galaxy's population of interstellar objects in the Rubin era.

I will review the governing processes that shape the dynamics of stars and black holes in dense galactic nuclei, including the effects of gas surrounding active supermassive black holes.

Direct detection experiments seek to observe rare interactions between dark matter particles and ordinary matter, requiring extreme sensitivity and deep underground locations to shield against cosmic-ray backgrounds. The two dark matter searches I will introduce in this talk happen to share an unusual home: gold mines.

Beyond the Galaxy: Tracing the Baryon Cycle through the Circumgalactic Medium.

Supernova cosmology with Euclid, Rubin and TiDES

I will present Australia’s contribution to international geodetic VLBI and its links to the radio astronomy community. While the core products mainly find their way into enabling sciences such as the world’s most precise coordinate frame, more recent applications of VLBI can be found in upcoming space missions (e.g. ESA’s NovaMoon) or intercontinental time and frequency transfer. Current risks and challenges will also be discussed, such as the rapidly increasing man-made radio emissions in space caused by providers of internet via satellites. Improved protection of VLBI frequencies on a global scale is an urgent need if we want satellite services being able to continue operations. This is where science meets policy and international treaties and I will report about current work on this matter at the national level.

On the hunt for supermassive black hole binaries with Pulsar Timing Arrays.

Everything, everywhere, all at once.

Chasing stellar-mass black holes in our Galaxy.

Asteroseismic Adventures Around Azimuthal Asymmetry.

Beating Nyquist: Compressed Sensing in Astronomical Instrument Design.

Differentiable Physical Simulations for Astronomy.