Magnetohydrodynamic equilibria in barotropic stars
Author
dc.contributor.author
Armaza, C.
Author
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Reisenegger, A.
Author
dc.contributor.author
Valdivia Hepp, Juan
Author
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Marchant, P.
Admission date
dc.date.accessioned
2015-09-23T13:06:26Z
Available date
dc.date.available
2015-09-23T13:06:26Z
Publication date
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2013
Cita de ítem
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RevMexAA(SC)
en_US
Identifier
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https://repositorio.uchile.cl/handle/2250/133783
General note
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To appear in “Magnetic Fields in the Universe IV (2013)”
Abstract
dc.description.abstract
Although barotropic matter does not constitute a realistic model for magnetic stars, it would be interesting
to con rm a recent conjecture that states that magnetized stars with a barotropic equation of state would be
dynamically unstable (Reisenegger 2009). In this work we construct a set of barotropic equilibria, which can
eventually be tested using a stability criterion. A general description of the ideal MHD equations governing
these equilibria is summarized, allowing for both poloidal and toroidal magnetic eld components. A new
nite-di erence numerical code is developed in order to solve the so-called Grad-Shafranov equation describing
the equilibrium of these con gurations, and some properties of the equilibria obtained are brie
y discussed.