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Title:
Electromagnetically driven relativistic jets - A class of self-similar solutions
Authors:
Li, Zhi-Yun; Chiueh, Tzihong; Begelman, Mitchell C.
Affiliation:
AA(Joint Institute for Laboratory Astrophysics, Boulder, CO), AB(National Central University, Chungli, Republic of China), AC(Joint Institute for Laboratory Astrophysics, Boulder, CO)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 394, no. 2, Aug. 1, 1992, p. 459-471. Research supported by Alfred P. Sloan Foundation. (ApJ Homepage)
Publication Date:
08/1992
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
COMPUTATIONAL ASTROPHYSICS, ELECTROMAGNETIC FIELDS, INTERSTELLAR MAGNETIC FIELDS, JET FLOW, MAGNETOHYDRODYNAMIC FLOW, RELATIVISTIC PARTICLES, ACTIVE GALACTIC NUCLEI, KINETIC ENERGY, MAGNETIC FIELD CONFIGURATIONS, MAGNETIC FLUX, NUMERICAL INTEGRATION
DOI:
10.1086/171597
Bibliographic Code:
1992ApJ...394..459L

Abstract

A class of self-similar solutions for relativistic winds driven by rotating magnetic fields is constructed. These winds are collimated to cylindrical jet flows of finite radii and may attain supermagnetosonic speeds with high Lorentz factors. Most of the flow acceleration results from the 'magnetic nozzle' effect and occurs beyond the fast magnetosonic point, which is typically located a few light cylinder radii from the rotation axis. Approximate equipartition between the electromagnetic and flow kinetic energies is generally achieved for these jets, in contrast to the radial wind case in which the flow is magnetically dominated at all radii.

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