7 papers
Accretion--ejection phenomena from young stars
Jonathan Ferreira
In the current paradigm of star formation magnetic fields play a very central role. Indeed, they probably help or even channel the initial gravitational collapse of the parent mole…
Theory of magnetized accretion discs driving jets
Jonathan Ferreira
In this lecture I review the theory of magnetized accretion discs driving jets, with a focus on Young Stellar Objects (YSOs). I first introduce observational and theoretical argume…
Atomic T Tauri disk winds heated by ambipolar diffusion
Paulo J. V. Garcia, Sylvie Cabrit, Jonathan Ferreira +2
We summarize results on the thermal and ionization structure of self-similar, magnetically-driven, atomic disk winds heated by ambipolar diffusion. We improve upon earlier work by…
MHD jets around galactic objects
Fabien Casse, Jonathan Ferreira
We present a self-similar, steady-state model describing both a magnetized accretion disc and a magnetohydrodynamic jet. We focus on the role of a hot corona in such a structure. T…
Magnetized accretion-ejection structures V. Effects of entropy generation inside the disc
Fabien Casse, Jonathan Ferreira
In this paper, steady-state MHD calculations of non-relativistic magnetized accretion discs driving jets are presented. For the first time, an energy equation describing the effect…
Magnetized accretion-ejection structures IV. Magnetically-driven jets from resistive, viscous, Keplerian discs
Fabien Casse, Jonathan Ferreira
We present steady-state calculations of self-similar magnetized accretion discs driving cold, adiabatic, non-relativistic jets. For the first time, both the magnetic torque due to…