Precision timing and scintillation of binary radio pulsars

Wed 12th June 2019 @14:15 PM, level 6, David Caro Building,
Dr. Daniel Reardon, Swinburne University,



Radio pulsars are precise clocks that can be timed using a detailed model of the pulsar, its binary orbit, and the ionised interstellar medium along our line of sight. This timing model can be used to test theories of dense matter, gravity in the strong field, and a set of the most stable pulsars can even be used as a Galactic-scale gravitational wave detector. In this talk I will describe my work to improve the timing models of pulsars through precision pulsar timing and by modelling their scintillation. I will highlight recent results for the nearest and brightest millisecond pulsar PSR J0437-4715, which include precise new distance and mass measurements, and a relativistic binary PSR J1141-6545. Finally, I will describe how these techniques will be useful for next-generation instruments including the Parkes ultra-wideband receiver, and the impressive MeerKAT radio telescope in South Africa.