|The Australia Telescope National Facility Colloquium|
|15:30-16:30 Fri 10 Jul 2009|
ATNF Marsfield Lecture Theatre
(Raman Research Institute)
On growth and form: the shapes of radio sources - Ravi Subrahmanyan Colloquium
Extragalactic radio sources are creations of active galactic nuclei. Jets produced in the vicinity of the central super massive black holes interact with the ambient interstellar gas, coronal X-ray halo of the host elliptical, and intergalactic gas and these manifest in a diversity of shapes for the radio structures. The inertia in the ambient thermal gas, asymmetries in the ambient gas distributions, momentum in the flows of magnetized plasma and buoyancy are some of the mechanisms that give form to the growing radio sources. Episodic activity at the nucleus and
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