Explore neutron star perturbation theory in this comprehensive lecture by Nils Andersson from the University of Southampton. Delve into advanced concepts of gravitational physics as part of the IAGRG School on Gravitation and Cosmology organized by the International Centre for Theoretical Sciences. Learn about the latest developments in compact object physics, with a focus on theoretical aspects of neutron star dynamics. Gain insights into cutting-edge research topics in the field of gravitational waves and strong-field general relativity. Benefit from expert instruction designed for graduate students and researchers working in gravitational physics, cosmology, and related areas.