Kink instability of a non-static plasma column

Details Kink instability of a non-static plasma column Kink instability of a non-static plasma column

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983cha%26a...7..159s&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 7, Issue 3, p. 159-164.

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

Starting with MHD equations we study the linear theory of stability of a plasma column with flow. From the dispersion equation derived, we calculate the dispersion curves and thereby estimate the effect of a flow in the linear theory. We find that, like the toroidal component of the magnetic field, a flow promotes instability: the rate of growth of instability may be increased by one or two orders of magntiude and the wavelength range for instability is also increased. When the flow velocity is large, the m=o and m=1 modes may appear almost together. Finally, a qualitative interpretation of three typical solar events is given on the basis of our results.

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