Ultralight boson particles have been predicted to solve problems in particle and high-energy physics and are compelling dark matter candidates. We develop algorithms and search for these conjectured ultralight bosons around black holes via gravitational-wave observations. 

For gravitational-wave detections and analyses, the raw outputs from the gravitational-wave detectors need to be converted into analysable data through some calibration apparatus. This project investigates new techniques to improve calibration accuracy and precision and better integrate the calibration bias into astrophysical analyses. 

We study the numerical waveforms for the gravitational waves emitted during the black hole ringdown stage, implement tools and data analysis frameworks, and analyze the latest gravitational-wave data to estimate black hole properties and test the general theory of relativity.

The event of two merging neutron stars, GW170817, was observed in gravitational waves and across the electromagnetic spectrum, opening a new era of multi-messenger astronomy. We work on following up electromagnetic counterparts to future detections of gravitational waves and are ready to contribute to the new science of multi-messenger astronomy. 

In this project, we study the gravitational-wave astronomy and astrophysics science cases and observational prospects with future ground-based gravitational-wave observatories.

This project aims to build a novel framework to study supermassive black holes via their unique gravitational wave signatures, providing a multi-messenger tool to constrain galaxy formation in the early universe.

This is a joint project between CGA/RSPhys and RSAA. Co-supervisor at RSAA: Dr Yuxiang Qin (yuxiang.qin@anu.edu.au)