A Measurement of the Millimetre Emission and the Sunyaev-Zel\u27dovich Effect Associated with Low-frequency Radio Sources

We present a statistical analysis of the millimetre-wavelength properties of 1.4 GHz-selected sources and a detection of the Sunyaev-Zel\u27dovich (SZ) effect associated with the haloes that host them. We stack data at 148, 218 and 277 GHz from the Atacama Cosmology Telescope at the positions of a large sample of radio AGN selected at 1.4 GHz. The thermal SZ effect associated with the haloes that host the AGN is detected at the 5 sigma level through its spectral signature, representing a statistical detection of the SZ effect in some of the lowest mass haloes (average M-200 approximate to 10(13) M-circle dot h(70)(-1)) studied to date. The relation between the SZ effect and mass (based on weak lensing measurements of radio galaxies) is consistent with that measured by Planck for local bright galaxies. In the context of galaxy evolution models, this study confirms that galaxies with radio AGN also typically support hot gaseous haloes. Adding Herschel observations allows us to show that the SZ signal is not significantly contaminated by dust emission. Finally, we analyse the contribution of radio sources to the angular power spectrum of the cosmic microwave background

Developing a Research Culture and Scholarship Plan in Information Studies

Information research may take many forms. When the researchers are situated within an information technology faculty, there is a natural orientation towards the technology and the systems that make possible the use of the technology. Despite this, a focus on information itself and its effective utilisation can be achieved in an environment that may otherwise be more concerned with the technology than the information that the technology carries. This focus can contribute to research that has a systems orientation, as well as both foster and be fostered by interdisciplinary work in areas such as education, management and psychology. Here we explain the development of a research program in ‘information use’ within the Socio-technical systems theme of the School of Information Systems at QUT. Our emphasis is on the processes – research supervision, industry linkage, consultancy, grant development, conference contribution and publication - that have advanced the development of the research group. We also provide a summary of research projects in the form of models that are being developed to help illuminate the research frameworks