The radio sky changes as stars flare, black holes launch outflows, and explosions drive shocks into their surroundings. Some sources appear suddenly; others brighten and fade over months or years. Repeated observations reveal this activity and can uncover events that were missed at visible wavelengths.
I explore this changing sky through radio time domain surveys, using facilities including the Very Large Array in the United States and the ASKAP radio telescope in Australia. By comparing images taken at different times, we identify new or variable sources and investigate them with further radio measurements and observations at other wavelengths. I am interested in what powers these events, how common they are, and whether they reveal previously unrecognised populations. This work also involves developing methods to find unusual behaviour within large datasets, keeping the search open to discoveries we did not anticipate.
