Self-Collimation and Magnetic Field Generation of Astrophysical Jets

Details Self-Collimation and Magnetic Field Generation of Astrophysical Jets Self-Collimation and Magnetic Field Generation of Astrophysical Jets

2002-04-03

arxiv.org/abs/astro-ph/0204048v1

Astrophysical Journal Letters 569 (2002) L39

Astronomy and Astrophysics

Astrophysics

10 pages including 2 eps figures, to be published in 10 April 2002, ApJL

Scientific paper

10.1086/340455

A novel model for collimation and transport of electron-positron-ion jets is presented. Analytical results show that the filamentary structures can be sustained by self-induced toroidal magnetic fields permeating through the filaments, whose widths significantly expand in the pair-dominant regimes. The magnetic field strength reflects a characteristic of equipartition of excess kinetic energy of the jets. It is also shown that growth of the hoselike instability is strongly suppressed. Essential features derived from this model are consistent with recent results observed by using very long baseline telescopes.

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