Testing self-similar models of powerful radio sources
ASTR SOC P 250 (2002) 319-323
Abstract:
We have carried out 2-D axisymmetric numerical simulations of light, supersonic jets. These simulations are used to test the hypothesis of self-similarity for the propagation of jets in powerful radio galaxies. A large range of jet parameters has been explored and we find that the jet flow is not always self-similar. Instead, it undergoes up to three phases which, individually, can be considered to be scale-free although, the jet does not exhibit self-similar behaviour during the transition. The number of phases that a jet goes through and their duration seem to depend upon the initial Mach number.The Power of Jets: New Clues from Radio Circular Polarization and X-Rays
Chapter in Lighthouses of the Universe: The Most Luminous Celestial Objects and Their Use for Cosmology, Springer Nature (2002) 428-435
The cluster environment of Abell 3667
ASTR SOC P 250 (2002) 432-436
Abstract:
Abell 3667 is a rich X-ray luminous southern cluster of galaxies at a redshift of 0.055. The properties of this cluster suggest that it is probably in a post-merger state. Recent radio observations taken with the Australia Telescope Compact Array (ATCA) have allowed a detailed investigation of the environment in this cluster. We present here a synopsis of these observations.The death of FR II radio sources and their connection with radio relics
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 336:2 (2002) 649-658
The dynamical structure of nonradiative black hole accretion flows
ASTROPHYSICAL JOURNAL 573:2 (2002) 738-748