Explores the historical discovery and mechanisms behind stellar pulsations, emphasizing their classification and significance in understanding stellar structure.
Explores the classification and statistics of AGN, black holes, unified AGN model, variability, megamasers, orbital motion measurement, and time-delay cosmography.
Explores multimessenger astrophysics, focusing on cosmic rays, neutrinos, and gamma rays, and discusses the detection of neutrinos from a BL Lac object.
Explores the fundamental problem of distance in astronomy and discusses various methods for distance measurement, including wide-angle astrometry and detached eclipsing binary distances.
Explores the recalibration of the cosmic distance ladder using accurate photometry and Gaia parallaxes, addressing challenges and potential refinements.
