Common Envelope Shaping of Planetary Nebulae. III. The Launching of Jets in Proto-Planetary Nebulae
Guillermo Garcia-Segura, Ronald E. Taam, Paul M. Ricker

TL;DR
This paper models magnetic wind launching from circumbinary disks post-common envelope, producing jets that shape proto-planetary nebulae with diverse morphologies, matching observed features.
Contribution
It presents a novel simulation of magnetic wind launching from circumbinary disks, explaining jet formation and nebula shaping in proto-planetary systems.
Findings
Wide jets reach velocities up to 230 km/s with 20° opening angles.
Narrow jets exhibit velocities up to 3,000 km/s during brief periods.
Simulated jets produce bipolar and elliptical nebulae consistent with observations.
Abstract
We compute successfully the launching of two magnetic winds from two circumbinary disks formed after a common envelope event. The launching is produced by the increase of magnetic pressure due to the collapse of the disks. The collapse is due to internal torques produced by a weak poloidal magnetic field. The first wind can be described as a wide jet, with an average mass-loss rate of \Moy\ and a maximum radial velocity of \kms. The outflow has a half-opening angle of . Narrow jets are also formed intermittently with velocities up to 3,000 \kms, with mass-loss rates of \Moy\ during short periods of time. The second wind can be described as a wide X-wind, with an average mass-loss rate of \Moy\ and a velocity of \kms. A narrow jet is also formed with a velocity of 250…
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