Structures, oscillations and solitons in large-scale multi-component self-gravitating systems (2008)
Wu, Kinwah, Younsi, Ziri, Saxton, Curtis J.
We investigate the structure of dynamics of large self-gravitating astrophysical systems using a self-interacting two-component model. We consider two cases, galaxy clusters and cosmic walls, for...
Radial structure, inflow & central mass of stationary radiative galaxy clusters (2008)
We analyse the radial structure of self-gravitating spheres consisting of multiple interpenetrating fluids, such as the X-ray emitting gas and the dark halo of a galaxy cluster. In these dipolytropic...
Sarty, Gordon E., Saxton, Curtis J., Wu, Kinwah
The temperatures of electrons and ions in the post-shock accretion region of a magnetic cataclysmic variable (mCV) will be equal at sufficiently high mass flow rates or for sufficiently weak magnetic...
X-ray emissions from two-temperature accretion flows within a dipole magnetic funnel (2007)
Saxton, Curtis J., Wu, Kinwah, Canalle, Joao. B. G., Cropper, Mark, Ramsay, Gavin
We investigate the hydrodynamics of accretion channelled by a dipolar magnetic field (funnel flows). We consider situations in which the electrons and ions in the flow cannot maintain thermal...
Canalle, Joao B. G., Saxton, Curtis J., Wu, Kinwah, Cropper, Mark, Ramsay, Gavin
Field-channelled accretion flows occur in a variety of astrophysical objects, including T Tauri stars,magnetic cataclysmic variables and X-ray pulsars. We consider a curvilinear coordinate system and...
Interactions of Jets with Inhomogeneous Cloudy Media (2005)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S., Midgley, Stuart
We present two-dimensional slab-jet simulations of jets in inhomogeneous media consisting of a tenuous hot medium populated with a small filling factor by warm, dense clouds. The simulations are...
Production of ring-like structure in the cocoon of Hercules A (2002)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S.
The radio lobes of the radio galaxy Hercules A contain intriguing ring-like structures concentric with the jet axis. To investigate the occurrence of such features, we have used hydrodynamic...
Effects of lower boundary conditions on the stability of radiative shocks (2002)
Thermal instabilities can cause a radiative shock to oscillate, thereby modulating the emission from the post-shock region. The mode frequencies are approximately quantised in analogy to those of a...
Complex shock structure in the western hot-spot of Pictor A (2002)
Saxton, Curtis J., Sutherland, Ralph S., Bicknell, Geoffrey V., Blanchet, Gwendoline, Wagner, Stefan J., Metchnik, Marc V.
We have carried out simulations of supersonic light jets in order to model the features observed in optical and radio images of the western hot-spot in the radio galaxy Pictor A. We have considered...
Production of ring-like structure in the cocoon of Hercules A (2002)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S.
The radio lobes of the radio galaxy Hercules A contain intriguing ring-like structures concentric with the jet axis. To investigate the occurrence of such features, we have used hydrodynamic...
Production of ring-like structure in the cocoon of Hercules A (2002)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S.
The radio lobes of the radio galaxy Hercules A contain intriguing ring-like structures concentric with the jet axis. To investigate the occurrence of such features, we have used hydrodynamic...
Production of ring-like structure in the cocoon of Hercules A (2002)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S.
The radio lobes of the radio galaxy Hercules A contain intriguing ring-like structures concentric with the jet axis. To investigate the occurrence of such features, we have used hydrodynamic...
Production of ring-like structure in the cocoon of Hercules A (2002)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S.
The radio lobes of the radio galaxy Hercules A contain intriguing ring-like structures concentric with the jet axis. To investigate the occurrence of such features, we have used hydrodynamic...
Production of ring-like structure in the cocoon of Hercules A (2002)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S.
The radio lobes of the radio galaxy Hercules A contain intriguing ring-like structures concentric with the jet axis. To investigate the occurrence of such features, we have used hydrodynamic...
The Centaurus A Northern Middle Lobe as a Buoyant Bubble (2001)
Saxton, Curtis J., Sutherland, Ralph S., Bicknell, Geoffrey V.
We model the northern middle radio lobe of Centaurus A (NGC 5128) as a buoyant bubble of plasma deposited by an intermittently active jet. The extent of the rise of the bubble and its morphology...
We present a general formulation for stability analyses of radiative shocks with multiple cooling processes, longitudinal and transverse perturbations, and unequal electron and ion temperatures....
Perturbative Analysis of Two-Temperature Radiative Shocks with Multiple Cooling Processes (1999)
The structure of the hot downstream region below a radiative accretion shock, such as that of an accreting compact object, may oscillate due to a global thermal instability. The oscillatory behaviour...