Following on from Duffy et al. (2010), in this paper we considered the same simulated haloes when "Modelling neutral hydrogen in galaxies using cosmological hydrodynamical simulations". This studied the baryonic properties of simulated haloes; focussing on Neutral Hydrogen, but also Molecular Hydrogen and Stellar masses as a function of cosmic time, halo mass and baryonic physics. With this paper I made the Victorian State Finals for the Fresh Science Award. Reference: Duffy, Kay, Battye, Booth, Dalla Vecchia, Schaye 2012 MNRAS 420 2799
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Article on my evening planaterium show hosted at SciTech in my local (at the time) newspaper
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An article about my work on investigating the so-called 'backreaction' of the baryons, i.e. gas and stars, in galaxies on the surrounding Dark Matter. Typically the latter is assumed to dominate and the effects of the galaxies are ignored, this work showed that this isn't the case when one is close enough to the centre.
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A brief explanation of the role of simulations in aiding the construction of next generation telescopes. Essentially, how do you know what you will see with a telescope that doesn't exist yet?
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A great experience touring the gorgeous Wheatbelt of Western Australia visiting schools and government environment agencies in Narrogin with my favourite Chief Science Prof Lyn Beazley. I spoke about astronomy to everyone I could find but I was also given tours by expert park rangers into the outback and learn about the vast arrays of species in this tough but stunning landscape.
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I came back to the town of Kalgoorlie to speak at the WA Museum, absolutely fascinating place if you've never been there... I highly recommend a visit!
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A feature article in the prestiguous journal Nature on construction efforts for ASKAP and my own small role in this next-generation telescope.
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Together with the wonderful Renae Sayers we were brought on the show to talk about a live debate called Profs and Pints that was running that week. Then questions (and inappropriate plugs on air) went wild.
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A brief interview on my talks trip round the Goldfields of WA. Fascinating countryside and incredible history in this frontier, goldrush town!
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Yours truly and WA Chief Scientist Prof Lyn Beazley on a school talk tour around Boulder and Kalgoorlie.
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A brief article detailing my initial efforts at the International Centre for Radio Astronomy Research to create simulations that follow the formation of galaxies across millions of lightyears of space.
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My first SPH simulation paper on the "Impact of baryon physics on dark matter structures: a detailed simulation study of halo density profiles". It demonstrated that the physics of galaxy formation can (surprisingly) strongly affect the dark matter distribution. It won the "Best Paper by a UWA Early Career Researcher" award. Reference: Duffy, Schaye, Kay, Dalla Vecchia, Battye, Booth 2010 MNRAS 405 2161D
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This was the main simulation paper for the OverWhelmingly Large Simulations (OWLS) effort that I was involved with during my PhD. This paper in particular focuses on the impact that different baryonic processes can have on the global star-formation rate, amongst many other effects. Reference: Schaye, Dalla Vecchia, Booth, Wiersma, Theuns, Haas, Bertone, Duffy, McCarthy, vd Voort 2010 MNRAS 402 1536-1560
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A letter concerning the developments for (what will be) the World's largest single dish telescope, the Five-Hundred metre Aperture Spherical Telescope. Precocious and self-promoting but I had nearly finished my PhD and was feeling pretty opinionated!
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My first N-body simulation paper (as well as Letter) on the topic of "Dark matter halo concentrations in the Wilkinson Microwave Anisotropy Probe year 5 cosmology" when I was based at Leiden Observatory. It demonstrated a fascinating inverse relation between the concentration (compactness) of a dark matter object and the mass of said object. Reference: Duffy, Schaye, Kay, Dalla Vecchia 2008 MNRAS 390L 64D
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My first publication in a journal, on the subject of "Galaxy redshift surveys selected by neutral hydrogen using the Five-hundred metre Aperture Spherical Telescope". The telescope will be a fantastic survey instrument, capable of detecting millions to hundreds of millions of galaxies around us for billions of light years. Reference: Duffy, Battye, Davies, Moss, Wilkinson 2008 MNRAS 383 150D
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My first scientific presentation at an international radio conference "From Planets to Dark Energy: the Modern Radio Universe" back in October 1-5 2007. Hosted at The University of Manchester, UK. Published online at SISSA, Proceedings of Science, p.91 Reference: Duffy, Battye, Davies, Moss, Wilkinson 2007 MRU ConfE 91D
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