The Ambipolar Filamentation in the Warm Ionized Medium

Details The Ambipolar Filamentation in the Warm Ionized Medium The Ambipolar Filamentation in the Warm Ionized Medium

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.292..155f&link_type=abstract

Astrophysics and Space Science, v. 292, Issue 1, p. 155-160 (2004).

Astronomy and Astrophysics

Astrophysics

Magnetohydrodynamics, Turbulence, Ism: Magnetic Fields, Numerical Methods

Scientific paper

We present the 2-D, two fluid (ions + neutrals) numerical simulations that we are carrying out in order to study the ambipolar filamentation process, in which a magnetized, partially ionized plasma is stirred by turbulence in the ambipolar frequency range. The higher turbulent velocity of the neutrals in the most ionized regions gives rise to a non-linear force driving them out of these regions, and causes the ions and the magnetic flux to condense in the most ionized regions, resulting in a filamentary structure where initial ionization inhomogeneities are amplified. This mechanism might help to explain some features observed in magnetized and partially ionized astrophysical plasmas as the interstellar medium.

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