Daniel Reardon is a senior postdoctoral researcher in Swinburne's Centre for Astrophysics and Supercomputing (CAS), working as part of the ARC Centre of Excellence for Gravitaitonal Wave Discovery (OzGrav). His primary research interests involve doing the highest precision science with pulsars to understand extreme and fundamental physics. Daniel observes pulsars using some of the best radio telescopes in the world, to explore the properties of neutron star matter and search for gravitational waves.

Daniel co-leads the Parkes Pulsar Timing Array (PPTA) collaboration -- the longest-running pulsar timing array project. The PPTA uses Murriyang (CSIRO's 64-m radio telescope in Parkes, New South Wales) to regularly observe a set of millisecond pulsars with the primary goal of detecting and studying ultra-low-frequency gravitational waves (GWs) emitted by supermassive black hole binary systems. Daniel currently (2025) serves as chair of the International Pulsar Timing Array (IPTA) Steering Committee and is additionally a foundational member of the MeerKAT Pulsar Timing Array (MPTA) project which is searching for GWs using the MeerKAT radio telescope in South Africa.

Daniel is originally from Armadale, Western Australia. He completed his PhD on precision pulsar pulsar timing and interstellar scintillometry at Monash University in 2018, and prior to that obtained his Bachelor of Science with Honours (majors in physics and applied mathematics) from the University of Tasmania in Hobart. In his spare time Daniel trains for ultra endurance races including Ironman triathlons and trail ultramarathons. In 2022 he qualified for, and competed in, the Ironman world championship in Kona, Hawaii.