Astrophysics & Particle Physics-APPC 2026

Binary star systems are two stars gravitationally linked and orbiting a shared center of mass. They are a basic part of stellar astronomy, with more than half of all the stars in the galaxy thought to be members of binary or multiple systems. Observations of these systems offer vital information on stellar masses, evolution, and astrophysical interactions.Examinations throughout the electromagnetic spectrum—optical, X-ray, and radio wavelengths allow astronomers to examine binary interactions, accretion processes, and orbital dynamics.Space telescopes, long-baseline interferometers, and spectrographs are the tools used for such examinations.Briefly, binary star systems are stellar physics, dynamics, and evolution laboratories. Their study provides insight into how stars interact, transfer mass, and evolve in ways impossible for single stars, shaping many of the high-energy and compact objects observed in the universe today.