Figure 18

Figure 18: Summary of potential outcomes from NS-NS mergers. Here, Mthr is the threshold mass (given the EOS) for collapse of a HMNS to a BH, and Q M is the binary mass ratio. ‘Small’, ‘massive’, and ‘heavy’ disks imply total disk masses Mdisk ≪ 0.01M ⊙, 0.01M ⊙ ≲ Mdisk ≲ 0.03M ⊙, and Mdisk ≳ 0.05M ⊙, respectively. ‘B-field’ and ‘J-transport’ indicate potential mechanisms for the HMNS to eventually lose its differential rotation support and collapse: magnetic damping and angular momentum transport outward into the disk. Spheroids are likely formed only for the APR and other stiff EOS models that can support remnants with relatively low rotational kinetic energies against collapse. Image reproduced by permission from [282], copyright by APS.