Quakes of compact stars

ABSTRACT Glitches are commonly observed for pulsars, which explained by various mechanisms. One hypothesis attributes the glitch effect to instantaneous moment of inertia change whole star caused a starquake, is similar earthquakes fast dislocation occurring on planar faults static stress, though quake-induced dynamics responsible (superfluid vortex versus pure starquake) remains still unknown. However, theoretical model quantitatively explain stress loading, types starquakes, and co-seismic rarely discussed. In this study, we incorporate elastic deformation theories into starquake problems. We compute field loading associated with rotation deceleration determine optimal type starquakes at locations. Two pulsar structure models, i.e. neutron strangeon included in computation, their differences notable. Our calculation shows that amplitude can be model, required scaled magnitude much larger than occurred Earth. further discuss possibility energy budget other phenomena using medium framework.