Time-dependent Accretion by Magnetic Young Stellar Objects as a Launching Mechanism for Stellar Jets

Details Time-dependent Accretion by Magnetic Young Stellar Objects as a Launching Mechanism for Stellar Jets Time-dependent Accretion by Magnetic Young Stellar Objects as a Launching Mechanism for Stellar Jets

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...489..199g&link_type=abstract

Astrophysical Journal v.489, p.199

Astronomy and Astrophysics

Astronomy

149

Accretion, Accretion Disks, Ism: Jets And Outflows, Methods: Numerical, Magnetohydrodynamics: Mhd, Stars: Pre-Main-Sequence

Scientific paper

A time-dependent jet launching and collimating mechanism is presented. Initial results of numerical simulations of the interaction between an aligned dipole rotator and a conducting circumstellar accretion disk that is initially threaded by the dipole field show that differential rotation between the disk and the star leads to the rapid expansion of the magnetic loops that connect the star to the disk. The expansion of these magnetic loops above and below the disk produces a two-component outflow. A hot, well-collimated outflow is generated by the convergent flow of attached plasma toward the rotation axis, while a cool, slower outflow is produced on the disk side of the expanding loop. The expanding loop, which later forms a plasmoid, defines the boundary between the jetlike flow and the disk wind. Episodic magnetic reconnection above and below the disk releases the jet plasma from the system and allows the process to repeat, reinforcing the hot, well-collimated outflow.

Affiliated with

Also associated with

No associations

Rating

Time-dependent Accretion by Magnetic Young Stellar Objects as a Launching Mechanism for Stellar Jets does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Time-dependent Accretion by Magnetic Young Stellar Objects as a Launching Mechanism for Stellar Jets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time-dependent Accretion by Magnetic Young Stellar Objects as a Launching Mechanism for Stellar Jets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1685192