Magnetic star models: toroidal fields and circulation
نویسندگان
چکیده
منابع مشابه
Nonaxisymmetric instabilities of neutron star with toroidal magnetic fields
Aims. Super magnetized neutron stars of ∼1015 G, magnetars, and magnetized protoneutron stars born after the magnetically-driven supernovae are likely to have very strong toroidal magnetic fields. Methods. Long-term, three-dimensional general relativistic magnetohydrodynamic simulations were performed to prepare isentropic neutron stars with toroidal magnetic fields in equilibrium as initial co...
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Simulations and analytic arguments suggest that the turbulence driven by magnetorotational instability (MRI) in accretion discs can amplify the toroidal (azimuthal) component of the magnetic field to a point at which magnetic pressure exceeds the combined gas + radiation pressure in the disc. Arguing from the recent analysis by Pessah and Psaltis, and other MRI results in the literature, we con...
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Stability properties of magnetic-field configurations containing the toroidal and axial field are considered. The stability is treated by making use of linear analysis. It is shown that the conditions required for the onset of instability are essentially different from those given by the necessary condition d(sBφ)/ds > 0, where s is the cylindrical radius. The growth rate of instability is calc...
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M. Baum,1 K. Schmalzl,2 P. Steffens,3 A. Hiess,3,* L. P. Regnault,4 M. Meven,5 P. Becker,6 L. Bohatý,6 and M. Braden1,† 1II. Physikalisches Institut, Universität zu Köln, Zülpicher Strasse 77, 50937 Köln, Germany 2Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, JCNS at ILL, 38042 Grenoble Cedex 9, France 3Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France 4Institut ...
متن کاملRelativistic MHD Simulations of Jets with Toroidal Magnetic Fields
Abstract. This paper presents an application of the recent relativistic HLLC approximate Riemann solver by Mignone & Bodo to magnetized flows with vanishing normal component of the magnetic field. The numerical scheme is validated in two dimensions by investigating the propagation of axisymmetric jets with toroidal magnetic fields. The selected jet models show that the HLLC solver yields sharpe...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1977
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/178.2.51