Publication: The ambipolar filamentation in the warm ionized medium
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Publication Date
2004
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Springer
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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.
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International Workshop on Magnetic Fields and Star Formation, APR 21-25, 2003, Madrid, SPAIN
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Franqueira, M., Tagger, M. and G´omez de Castro, A. I.: 2000, A&A 357, 1143.
Haerendel, G.: 1992, Nat. 360, 241.
Haffner, L.M., Reynolds, R.J. and Tufte, S.L.: 1998, ApJ 501, L83.
Kulsrud, R. and Pearce, W.: 1969, ApJ 156, 445.
McIvor, I.: 1977, MNRAS 178, 85.
Mestel, L. and Spitzer, L.: 1956, MNRAS 116, 503.
Minter, A.H. and Spangler, S.R.: 1996, ApJ 458, 194.
Minter, A.H. and Spangler, S.R.: 1997, ApJ 485, 182.
Piddington, J.H.: 1956, MNRAS 116, 314.
Reynolds, R.J., Haffner, L.M. Tufte, S. L.: 2000, in: J. Arthur, N. Brickhouse, and J. Franco (eds.), Astrophysical plasmas: Codes, Models and Observations, Rev. Mex. Astron. Astrof. (Serie de conferencias) Vol. 9, p. 249.
Tagger, M., Falgarone, E. and Shukurov, A.: 1995, A&A 229, 940.