Models and constraints ; [lecture notes of the First JETSET School on Jets from Young Stars: Models and Constraints, held by the Marie Curie Research and Training Network on JET Simulations, Experiments and Theory ; held in Villard de Lans, France in Janu

This volume contains the edited lecture notes of the First JETSET School on Jets from Young Stars: Models and Constraints, held by the Marie Curie Research and Training Network on JET Simulations, Experiments and Theory. At this school the lecturers gave an introduction to observational properties and basic models describing the launching and collimation mechanisms of jets. The first half of the book is devoted to general observational constraints, covering the outflow phenomenon in young stars, the identification of magneto-centrifugal processes as the main jet driving mechanism, and the magnetic interaction between the star and its accretion disc. The second half of the book is devoted to theoretical knowledge of magneto-hydrodynamic processes pertinent to the jet launching mechanism in young stars. This comprises a general introduction to magneto-hydrodynamics, a description of the role of MHD processes in Standard Accretion Discs, and the physics of steady state MHD outflows, from the basic concepts and equations to modern self-similar solutions. Further lectures detail the various classes of steady magnetic-wind models currently discussed in the context of protostellar jets. Front Matter....Pages I-XI Front Matter....Pages 1-1 The First Three Million Years....Pages 3-19 Jets from Young Stars: The Need for MHD Collimation and Acceleration Processes....Pages 21-53 Star-disk Interaction in Classical T Tauri Stars....Pages 55-73 Front Matter....Pages 75-75 Introduction to Magneto-Hydrodynamics....Pages 77-101 Theory and Models of Standard Accretion Disks....Pages 103-115 Theory of MHD Jets and Outflows....Pages 117-159 Transit Flows and Jet Asymptotics....Pages 161-180 MHD Disc Winds....Pages 181-207 Stellar Wind Models....Pages 209-224 Back Matter....Pages 225-228 This volume presents the edited lecture notes of the First JETSET School on Jets from Young Stars: Models and Constraints, held by the Marie Curie Research and Training Network on JET Simulations, Experiments and Theory. The first half of the book is devoted to general observational constraints. The second section is devoted to theoretical knowledge of magneto-hydrodynamic processes pertinent to the jet launching mechanism in young stars.