The fractional moment of inertia of neutron star crusts and pulsar glitches

Neutron stars (NS) are expected to have a solid inner crust which is believed to play an important role in understanding a number of astrophysical observations such as pulsar glitches. The sudden spin jumps, or glitches, commonly seen in isolated neutron stars are thought to represent angular momentum transfer between the crust and the liquid interior. In general, it has been found that ΔI/I for a massive neutron star, has lesser moment of inertia stored in the crust. The study has been done using the finite range simple effective interaction (SEI-Y) having Yukawa form factor that has been used consistently in finite nuclei and neutron star phenomenology. The evaluation of ρt has been made under the two approaches, the dynamical and the thermodynamical methods, and its consequences have been discussed in the calculations performed in the work. For a given mass of NS, the FMI decreases with increase in slope values after the characteristic slope