General relativistic neutron stars with twisted magnetosphere
arXiv:1412.4036 · doi:10.1093/mnras/stu2628
Abstract
Soft Gamma-Ray Repeaters and Anomalous X-Ray Pulsars are extreme manifestations of the most magnetized neutron stars: magnetars. The phenomenology of their emission and spectral properties strongly support the idea that the magnetospheres of these astrophysical objects are tightly twisted in the vicinity of the star. Previous studies on equilibrium configurations have so far focused on either the internal or the external magnetic field configuration, without considering a real coupling between the two fields. Here we investigate numerical equilibrium models of magnetized neutron stars endowed with a confined twisted magnetosphere, solving the general relativistic Grad-Shafranov equation both in the interior and in the exterior of the compact object. A comprehensive study of the parameters space is provided to investigate the effects of different current distributions on the overall magnetic field structure.
15 pages, 14 figures. Accepted for publication in MNRAS
References in corpus (14)
- The strongest cosmic magnets: Soft Gamma-ray Repeaters and Anomalous X-ray Pulsars
- Discovery of luminous pulsed hard X-ray emission from anomalous X-ray pulsars 1RXS J1708-4009, 4U 0142+61 and 1E 2259+586 by INTEGRAL and RXTE
- Three-dimensional numerical simulations of the pulsar magentoshere: Preliminary results
- Improved constrained scheme for the Einstein equations: An approach to the uniqueness issue
- The Prelude to and Aftermath of the Giant Flare of 2004 December 27: Persistent and Pulsed X-ray Properties of SGR 1806-20 from 1993 to 2005
- Possible Evidence for Free Precession of a Strongly Magnetized Neutron Star in the Magnetar 4U 0142+61
- Variability from Nonaxisymmetric Fluctuations Interacting with Standing Shocks in Tilted Black Hole Accretion Disks
- Relativistic stars with purely toroidal magnetic fields
- X-ray spectra from magnetar candidates. II Resonant cross sections for electron-photon scattering in the relativistic regime
- Constraints on the Emission and Viewing Geometry of the Transient Anomalous X-ray Pulsar XTE J1810-197
- Topology of magnetars external field. I. Axially symmetric fields
- Axisymmetric and stationary structures of magnetized barotropic stars with extremely strong magnetic fields deep inside
- Magnetohydrodynamics in stationary and axisymmetric spacetimes: a fully covariant approach
- Magnetar Corona
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