Journal article
Tilted torus magnetic fields in neutron stars and their gravitational wave signatures
PD Lasky, A Melatos
Physical Review D Particles Fields Gravitation and Cosmology | Published : 2013
Abstract
Gravitational-wave diagnostics are developed for discriminating between varieties of mixed poloidal-toroidal magnetic fields in neutron stars, with particular emphasis on differentially rotating protoneutron stars. It is shown that tilted torus magnetic fields, defined as the sum of an internal/external poloidal component, whose axis of symmetry is tilted with respect to the rotation axis, and an internal toroidal component, whose axis of symmetry is aligned with the rotation axis, deform the star triaxially, unlike twisted torus fields, which deform the star biaxially. Utilizing an analytic tilted torus example, we show that these two topologies can be distinguished by their gravitational w..
View full abstractRelated Projects (1)
Grants
Awarded by Australian Research Council
Funding Acknowledgements
We are grateful to Alpha Mastrano and Sam Lander for valuable discussions, and to Anton Tarasenko for an early implementation of the moment of inertia calculations within the HORIZON code. P. D. L. is especially grateful to Burkhard Zink and Kostas Kokkotas for work and discussions related to the HORIZON code. We thank the anonymous referee for insightful feedback that has improved the manuscript. This work is supported by an Australian Research Council Discovery Project Grant No. (DP110103347). P. D. L. is supported by an internal University of Melbourne Early Career Researcher Grant. The numerical simulation was performed on the Multimodal Australian ScienceS Imaging and Visualisation Environment (MASSIVE; www.massive.org.au) through an award under the Merit Allocation Scheme on the NCI National Facility at the ANU.