Definition of "starquake"
starquake
noun
plural starquakes
(astronomy) A violent tremor or quake that occurs on or near the surface of a star, especially a collapsed star.
Quotations
Astronomers call the sudden changes in the neutron star starquakes. The energy released in a starquake is enormous and flows out from the star into the space surrounding it. After the 1969 starquake on the Crab pulsar, a wave of energy was seen to flow outwards, rippling through the centre of the Crab Nebula.
1985, Paul Murdin, Lesley Murdin, New Astronomy, page 131
Starquakes in slowing neutron stars drive matter toward the magnetic poles, distort the star's shape, and excite precession.
2000, Richard I. Epstein, Bennett Link, Starquake-Induced Glitches in Pulsars, Kwong-Sang Cheng H, F, Chau, K. L. Chan, K. C. Leung (editors), Stellar Astrophysics: Proceedings of the Pacific Rim Conference, page 96
Should the core be solid, starquakes are expected — a shifting of the matter under enormous stress in the interior of the star. Such starquakes should produce a discontinuous change in the period of rotation of the neutron star. Such changes, called "glitches," are observed.
2000, Carl Sagan, Jerome Agel, Carl Sagan's Cosmic Connection: An Extraterrestrial Perspective , page 260