We present new numerical techniques we developed for launching the first parameter study of {\it magnetized} black hole--neutron star (BHNS) mergers, varying the magnetic fields seeded in the initial neutron star. We found that magnetic fields have a negligible impact on the gravitational waveforms and bulk dynamics of the system during merger, regardless of magnetic field strength or BH spin. In a recent simulation, we seeded the remnant disk from an unmagnetized BHNS merger simulation with large-scale, purely poloidal magnetic fields, which are otherwise absent in the full simulation. The outcome appears to be a viable sGRB central engine.
@article{arxiv.1303.0837,
title = {Numerical Relativity Simulations of Magnetized Black Hole-Neutron Star Mergers},
author = {Zachariah B. Etienne and Yuk Tung Liu and Vasileios Paschalidis and Stuart L. Shapiro},
journal= {arXiv preprint arXiv:1303.0837},
year = {2013}
}
Comments
4 pages, 2 figures, submitted to Proceedings of the 13th Marcel Grossmann Meeting