Published in

Cambridge University Press (CUP), Proceedings of the International Astronomical Union, S302(9), p. 419-422, 2013

DOI: 10.1017/s1743921314002646

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Magnetohydrodynamic equilibria in barotropic stars

Journal article published in 2013 by C. Armaza, A. Reisenegger ORCID, J. A. Valdivia, P. Marchant
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

AbstractAlthough barotropic matter does not constitute a realistic model for magnetic stars on short timescales, it would be interesting to confirm 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 field components. A new finite-difference numerical code is developed in order to solve the so-called Grad-Shafranov equation describing the equilibrium of these configurations, and some properties of the equilibria obtained are briefly discussed.

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