JETSET FP6, "Jet Simulations, Experiments, Theory" 10 years later, what is next?

Session

S1 Theory and models

22 mai 2018, 09:45

Salle de conférence du château (Meudon)

25. Magnetorotational turbulence, dynamo action and transport in convective disks

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...

24. Jet Stability

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.

27. An energy integral for non polytropic astrophysical winds and jets.

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...

32. Meridional self-similarity MHD flow: From Classical to flow around Kerr Hole

M. Loic Chantry (LUTH)

22/05/2018 11:45

The meridional self-similarity method was a very effective method in classical MHD to produce models describing the MHD flows of young stellar jets. But the jets produced by AGN are extremely energetic natural phenomena and thus constitute a real laboratory of higly reltivistic MHD flow and high energy physics. Indeed, it is well admitted that the fluid velocity of thes jets atteins higly...

30. Magnetic field diffusion in multi-fluid MHD turbulence

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...