Covers the dynamics of stellar orbits in the Milky Way, focusing on the Sun's neighborhood and the significance of Oort constants and epicyclic frequencies.
Explores the recalibration of the cosmic distance ladder using accurate photometry and Gaia parallaxes, addressing challenges and potential refinements.
Explores dispersion relations, system responses to perturbations, and the stability of rotating systems, focusing on the origin of spiral structures in galaxies.
Explores the historical discovery and mechanisms behind stellar pulsations, emphasizing their classification and significance in understanding stellar structure.