Three-dimensional evolution of differentially rotating magnetized neutron stars
Abstract
We construct a new three-dimensional general relativistic magnetohydrodynamics code, in which a fixed mesh refinement technique is implemented. To ensure the divergence-free condition as well as the magnetic flux conservation, we employ the method by Balsara [J. Comp. Physiol.JRCPA30373-0859 174, 614 (2001); J. Comp. Phys. 228, 5040 (2009)JCTPAH0021-999110.1016/j.jcp.2009.03.038]. Using this new code, we evolve differentially rotating magnetized neutron stars, and find that a magnetically driven outflow is launched from the star exhibiting a kink instability. The matter ejection rate and Poynting flux are still consistent with our previous finding [M. Shibata, Y. Suwa, K. Kiuchi, and K. Ioka, Astrophys. J. 734, L36 (2011)] obtained in axisymmetric simulations.
- Publication:
-
Physical Review D
- Pub Date:
- September 2012
- DOI:
- 10.1103/PhysRevD.86.064008
- arXiv:
- arXiv:1207.6444
- Bibcode:
- 2012PhRvD..86f4008K
- Keywords:
-
- 04.25.D-;
- 04.30.-w;
- 04.40.Dg;
- Numerical relativity;
- Gravitational waves: theory;
- Relativistic stars: structure stability and oscillations;
- Astrophysics - High Energy Astrophysical Phenomena;
- General Relativity and Quantum Cosmology
- E-Print:
- 12 pages, 14 figures, accepted by PRD