Dr
Gianluigi Bodo
(INAF OATO)
22/05/2018 09:55
We present a numerical study of turbulence and dynamo action in stratified shearing boxes with zero mean magnetic flux. We assume that the fluid obeys the perfect gas law and has finite (constant) thermal diffusivity. We identify two regimes. The first is a conductive regime in which the heat is transported mostly by conduction and the density decreases with height. In the limit of large...
Prof.
Nektarios Vlahakis
(Department of Physics, University of Athens, Greece)
22/05/2018 10:25
The linear stability of magnetized jets against nonaxisymmetric modes will be discussed.
Prof.
KANARIS TSINGANOS
(UNIVERSITY OF ATHENS)
22/05/2018 11:15
A criterion is derived for distinguishing if a rotating hydrodynamic outflow emerging from the atmosphere and the gravitational well of a central object obtains a radial (wind) or cylindrical (jet) asymptotical shape. Quasi-analytical solutions are obtained via a nonlinear separation of the variables, which are the spherical distance and the mass flux function, in the relevant physical...
Prof.
Turlough Downes
(Centre for Astrophysics and Relativity, Dublin City University)
22/05/2018 12:15
Diffusion of, and turbulence in, magnetic fields are believed to be critical to various processes in astrophysics such as particle acceleration, magnetic reconnection and star formation. It has been suggested that MHD turbulence itself can play a critical role in magnetic field diffusion. If this is true then it implies that some of our notions about global structures in turbulent...
