Density and Magnetic Field Evolution

Case D: Mass Ratio 3:1, Spin 0.75, Tilted Magnetic Field

In this case, mass ratio $q=3$ and spin $a/M=0.75$. The rest-mass density is normalized to the maximum density at $t = 0$. Time is measured from the beginning of the simulation in $M=2.5\times 10^{-2} (M_{NS}/1.4M_{\odot}) \ $ms. The initial magnetic dipole is seeded such that its axis of symmetry is in the plane of rotation along the line that connects the centers of the black hole and neutron star. The neutron star spirals in towards the black hole until it is tidally disrupted forming a disk of matter that orbits the black hole. The magnetic field lines do not become collimated above the black hole and that matter is not ejected. In fact, some of the matter noticeably remains in a debris cloud surrounding the disk. No jet is launched during the simulation.

Fig. 3-1: Initial configuration	Fig. 3-2: Tidal disruption of neutron star
Fig. 3-3: Post merger black hole and magnetic field	Fig. 3-4: Failure to form a jet