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According to the strange quark matter hypothesis, pulsars may actually bestrange stars composed of self-bound strange quark matter. The normal mattercrust of a strange star, unlike that of a normal neutron star, is supported bya strong electric field. A gap is then presented between the crust and thestrange quark core. Therefore, peculiar core-crust oscillation may occur in astrange star, which can produce distinctive gravitational waves. In this paper,the waveforms of such gravitational waves are derived using a rigid model. Wefind that the gravitational waves are extremely weak and undetectable, even forthe next-generation detectors. Therefore, the seismology of a strange star isnot affected by the core-crust oscillation. Observers will have to search forother effects to diagnose the existence of the crust.

Gravitational Waves from Strange Star Core-Crust Oscillation