Simulating protostellar jets simultaneously at launching and observational scales

Abstract

We present the first 2.5-D MHD simulations of protostellar jets that include both the region in which the jet is launched magnetocentrifugally at scale lengths $<0.1$ AU, and where the propagating jet is observed at scale lengths $>10^3$ AU. These simulations, performed with the new AMR-MHD code AZEuS, reveal interesting relationships between conditions at the disc surface, such as the magnetic field strength, and direct observables such as proper motion, jet rotation, jet radius, and mass flux. By comparing these quantities with observed values, we present direct numerical evidence that the magnetocentrifugal launching mechanism is capable, by itself, of launching realistic protostellar jets.

14 pages, 3 figures; Accepted for publication in ApJL

References in corpus (9)

• MHD simulations of jet acceleration from Keplerian accretion disks: the effects of disk resistivity
• Magneto-Centrifugal Launching of Jets from Accretion Disks. I: Cold Axisymmetric Flows
• Three-Dimensional Simulations of Jets from Keplerian Disks: Self--Regulatory Stability
• T Tauri Jet Physics Resolved Near The Launching Region with the Hubble Space Telescope
• Acceleration and collimation of relativistic MHD disk winds
• Structured outflow from a dynamo active accretion disc
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• Magnetic Fields in Stellar Jets
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Cited by in corpus (14)

• Magneto-thermal Disk Wind from Protoplanetary Disks
• Global Evolution of an Accretion Disk with Net Vertical Field: Coronal Accretion, Flux Transport, and Disk Winds
• Jets from Young Stars
• Disks and Jets - Gravity, Rotation and Magnetic Fields
• HST-Scale 3D simulations of MHD disc winds : A rotating two-component jet structure
• Jet rotation driven by MHD shocks in helical magnetic fields
• Disk wind feedback from high-mass protostars
• Recollimation boundary layers as X-ray sources in young stellar jets
• MHD simulations of the formation and propagation of protostellar jets to observational length scales
• Numerical simulations of MHD jets from Keplerian accretion disks I-Recollimation shocks
• AZEuS: An Adaptive Zone Eulerian Scheme for Computational MHD
• Accretion, winds and outflows in young stars
• Disk Wind Feedback from High-mass Protostars. II. The Evolutionary Sequence
• On the dynamics of pebbles in protoplanetary disks with magnetically-driven winds