Magnetic confinement of the optical jets in young stellar objects

Details Magnetic confinement of the optical jets in young stellar objects Magnetic confinement of the optical jets in young stellar objects

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...405..698c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 405, no. 2, p. 698-705.

Astronomy and Astrophysics

Astrophysics

2

Astronomical Models, Cosmic Dust, Magnetic Compression, Magnetic Fields, Plasma Jets, Pre-Main Sequence Stars, Accretion Disks, Angular Acceleration, Electric Current, Gas Pressure, Ionized Gases, Magnetohydrodynamics, Plasma Pinch

Scientific paper

We discuss a model for collimating plasma outflow from a young stellar object via an axial current initiated by collisionally charged dust grains incorporated in the ionized outflow from the central object. The charged grains generate an electric current in response to their greater reaction to the radiation field of the central star and their large mobility with respect to the plasma. This produces a pinching toroidal magnetic field of about 0.001 G in the base flow. A simple self-similar, steady state MHD solution shows that a well-collimated jet can result, provided this pinch is only marginally overbalanced there by the gas pressure and centrifugal acceleration associated with any rotation of the jet.

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