University of Oxford Physics Year 1 - Astrophysics (S02) Complete Lecture Notes & Revision Guide

Comprehensive handwritten lecture notes for the University of Oxford Astrophysics course. These notes provide a structured and detailed treatment of the material covered throughout the course, including derivations, worked examples, key formulas, diagrams, and explanations designed to support both understanding and revision. Topics covered include: • Astronomical distance scales, luminosity, flux, magnitudes, parsecs, and observational methods in astrophysics • Kepler's laws, orbital mechanics, and the detection and characterisation of exoplanets through radial velocity, transit, microlensing, wobble, and direct imaging methods • Hydrostatic equilibrium, stellar structure, pressure balance, virial theorem, and characteristic stellar timescales • Nuclear fusion in stars, proton-proton chains, stellar energy generation, binding energy, and solar structure • Solar physics including the core, radiative zone, convection zone, photosphere, chromosphere, corona, solar winds, and magnetic fields • Blackbody radiation, stellar temperatures, luminosities, colour indices, binary star systems, and the mass-luminosity relation • Photon diffusion, stellar lifetimes, metallicity, and observational properties of stars • Galactic structure including the thin disk, thick disk, bulge, halo, dark matter halo, globular clusters, and the central black hole of the Milky Way • Galaxy evolution, elliptical and spiral galaxies, dwarf galaxies, galaxy luminosity functions, and star formation histories • Hubble's law, redshift, distance measurements, standard candles, Tully-Fisher relation, and the fundamental plane of elliptical galaxies • Active Galactic Nuclei (AGN), quasars, Seyfert galaxies, radio galaxies, synchrotron radiation, and unified models of AGN • Cosmology including the cosmological principle, expansion of the Universe, Friedmann equations, critical density, dark matter, dark energy, and the cosmological constant • Cosmic Microwave Background radiation, recombination, baryon density, inflation, flatness and horizon problems, Big Bang nucleosynthesis, and the evolution of the early Universe The document consists of carefully organised handwritten notes taken during the course and is suitable for lecture review, tutorial preparation, revision, and exam preparation. Ideal for Oxford Physics students and anyone studying introductory university-level astrophysics, cosmology, stellar evolution, and galactic astronomy.