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The ambipolar filamentation in the warm ionized medium

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Franqueira, M. and Tagger, M. and Gómez de Castro, Ana Inés (2004) The ambipolar filamentation in the warm ionized medium. Astrophysics and space science, 292 . pp. 155-160. ISSN 0004-640X

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Official URL: http://www.springerlink.com/content/w2x150550n3157m0/fulltext.pdf


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Abstract

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.


Item Type:Article
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International Workshop on Magnetic Fields and Star Formation, APR 21-25, 2003, Madrid, SPAIN

Uncontrolled Keywords:Turbulent magnetic-fields; waves; magnetohydrodynamics; turbulence; ISM : magnetic fields; numerical methods
Subjects:Sciences > Mathematics > Astronomy
ID Code:16039
Deposited On:20 Jul 2012 11:38
Last Modified:10 Aug 2018 07:59

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