Case A: Mass Ratio 3:1, NS Spin 0.17, Nonmagnetized

Density Evolution

These figures show snapshots of the rest-mass density $\rho_{0}$ , normalized to its initial NS maximum value $\rho_0=8.92\times 10^{14}\,(1.4M_\odot/M_{\rm NS})^2\rm{g/cm}^{3}$ (log scale) at selected times for this case . The BH apparent horizon is shown as a black sphere. Top panels focus on the binary inspiral, while bottom ones focus on the NS tidal disruption and disk formation. Despite the central density oscillations, the shape of the NS is practically unaffected by spin, and remains nearly spherical during the first five of the seven orbits prior to merger. Here $M=2.5\times 10^{-2}(M_{\rm NS}/1.4M_\odot){\rm ms}=7.58(M_{\rm NS}/1.4M_\odot)\,\rm km$.

Fig. 1-1: Rest mass density at time t/M = 0

Fig. 1-2: Rest mass density at time t/M = 355

Fig. 1-3: Rest mass density at time t/M = 496

Fig. 1-4: Rest mass density at time t/M = 620

Fig. 1-5: Rest mass density at time t/M = 834

Fig. 1-5: Rest mass density at time t/M = 2350