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Ambipolar filamentation of turbulent magnetic fields: a numerical simulation

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Franqueira, M. y Tagger, M. y Gómez de Castro, Ana Inés (2000) Ambipolar filamentation of turbulent magnetic fields: a numerical simulation. Astronomy & Astrophysics, 357 (3). pp. 1143-1150. ISSN 0004-6361

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URL Oficial: http://arxiv.org/pdf/astro-ph/0005374v1.pdf



Resumen

We present the results of a 2-D, two fluid (ions and neutrals) simulation of the ambipolar filamentation process, in which a magnetized, weakly 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, so that the initial ionization inhomogeneities are strongly amplified. This effect, the ambipolar filamentation, causes the ions and the magnetic flux to condense and separate from the neutrals, resulting in a filamentary structure.


Tipo de documento:Artículo
Palabras clave:Damped alfven waves; molecular clouds; star formation; magnetohydrodynamics; spicules; drivers; Magnetohydrodynamics (MHD); turbulence; methods : numerical; Sun : magnetic fields; ISM : magnetic fields
Materias:Ciencias > Matemáticas > Astronomía
Código ID:16439
Depositado:19 Sep 2012 08:42
Última Modificación:07 Feb 2014 09:29

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