Effect of a helical magnetic field on the stability of a gravitating cylinder

Details Effect of a helical magnetic field on the stability of a gravitating cylinder Effect of a helical magnetic field on the stability of a gravitating cylinder

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ap%26ss..79..379k&link_type=abstract

Astrophysics and Space Science, vol. 79, no. 2, Oct. 1981, p. 379-386. Research supported by the Council of Scientific and Indu

Astronomy and Astrophysics

Astrophysics

4

Astronomical Models, Cylindrical Bodies, Gravitational Fields, Interstellar Magnetic Fields, Magnetic Field Configurations, Spiral Galaxies, Boundary Value Problems, Galactic Structure, Magnetic Effects, Perturbation Theory, Stability

Scientific paper

The effect of a helical magnetic field on the stability of an infinitely conducting, inviscid, incompressible and self-gravitating cylinder is investigated for axisymmetric perturbations. Calculations are extensions of investigations by Trehan and Reid (1958) and Trehan and Singh (1978) to include the self-gravitational forces. Numerical solutions are derived for the roots of the dispersion relation, and the stability parameter is plotted against the nondimensional wave number for a given magnetic field (H-asterisk = 0.025). The configuration is monotonically unstable for wavenumbers with less than a critical value, and critical wavenumber and growth rates are suppressed by increase in the helicity of the field. The ambient magnetic field has a stabilizing effect, and it is concluded that helical magnetic fields improve the stability of an infinite cylindrical configuration over a uniform axial magnetic field.

Affiliated with

Also associated with

No associations

Rating

Effect of a helical magnetic field on the stability of a gravitating cylinder 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 Effect of a helical magnetic field on the stability of a gravitating cylinder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effect of a helical magnetic field on the stability of a gravitating cylinder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1468381