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I am a computational astrophysicist working on a broad range of problems in galaxy formation and cosmology. My particular interests are in dark matter – what is its nature? what kinds of observations will allow us to discriminate between alternative models? – and in how feedback from stars and black holes (i.e. deposition of energy and momentum into their surroundings) impact the formation and evolution of galaxies. Most of this work requires powerful supercomputers, and so I also have an ongoing interest in scientific high performance computing.

I obtained a BA in Theoretical Physics from Trinity College Dublin in 1999, and a PhD from Durham University in 2003. Between 2004 and 2011, I held postdoc positions in the Swinburne Centre for Astrophysics and Supercomputing in Melbourne (2004-07) and with the Theoretical Astrophysics Group at the University of Leicester (2008-11). I have been at ICRAR/UWA since 2011, initially as a research assistant professor and, since 2014, as a research associate professor and ARC Future Fellow. Here at ICRAR/UWA, I lead the Computational Theory and Modelling Group, a team of approximately 20 staff, postdocs and students working on a variety of simulation, modelling, and statistical problems in galaxy formation and cosmology.

I am an associate member of the ARC Centre of Excellence for All-Sky Astrophysics (CAASTRO), and am a Chief Investigator for the new ARC CoE CAASTRO3D. I also serve on various committees, including the Astronomical Society of Australia council, the Australia Telescope Time Assignment Committee (TAC), the Astronomy Supercomputer Time Allocation Committee (ASTAC), and the Australian e-Research Advisory Committee (AeRAC).

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