Institute of Astronomy

Part II Introduction to Cosmology

Lent Term, 24 Lectures  – Prof. G Efstathiou

  1. Is cosmology science? [1]
  • Causal structure of space-time: our past light cone
  • Technology horizon, particle horizon and the ‘size’ of the Universe
  • Importance of symmetry principles in cosmology
  • Big problems in cosmology
  1. The background cosmology [6]
  • Symmetric spaces and Killing Vectors
  • The Friedmann-Robertson-Walker metric
  • Energy Momentum Tensor for Perfect Fluid
  • Friedman equations and geometry of the Universe
  • Cosmological redshift
  • Newtonian cosmology
  • Cosmological constant
  • de-Sitter space and time-slicing
  • horizons
  • distances and age of the Universe
  1. Thermal History [5]
  • The cosmic microwave background (CMB) radiation
  • Thermal equilibrium: bosons and fermions
  • Particle content at early times
  • Neutrinos and neutrino decoupling
  • Big-bang nucleosynthesis
  • Relic particles
  • dark matter
  • baryon asymmetry
  • recombination
  1. Fluctuations [5]
  • Newtonian perturbation theory
  • Fluctuations in the CMB – Silk Damping
  • Inflation and the origin of fluctuations
  • Gravitational waves and tests of inflation
  • What can we learn from the CMB?
  • The ΛCDM model
  • The multiverse
  • Unanswered questions
  1. Observational Probes [5]
  • Standard candles – Type 1a supernovae
  • Standard ruler – Baryon Acoustic Oscillations
  • Inverse distance ladder and H0
  • Forward distance ladder and H0
  • Gravitational lensing
  • Redshift space distortions
  • Is ΛCDM consistent with observations?
  1. Emerging from the dark age [2]
  • The first stars and reionization of the intergalactic medium (IGM)
  • Quasar absorption lines
  • Metallicity of the IGM
  • Formation of galaxies and clusters



Lecture_1_Cosmology.pdf4.03 MB
Lecture_2_Cosmology.pdf1.76 MB
Lecture_3_Cosmology.pdf2.53 MB
Lecture_4_Cosmology.pdf2.95 MB
Lecture_5_Cosmology.pdf2.19 MB
Lecture_6_Cosmology.pdf3.22 MB
Lecture_7_Cosmology.pdf4.45 MB
Lecture_10_Cosmology.pdf1.67 MB
Lecture_11_Cosmology.pdf4.55 MB
Lecture_12_Cosmology.pdf1.41 MB
Lecture_13_Cosmology.pdf2.02 MB
Lecture_14_Cosmology.pdf1.79 MB
Lecture_15_Cosmology.pdf1.4 MB
Lecture_16_Cosmology.pdf3.29 MB
Lecture_17_Cosmology.pdf1.91 MB
Lecture_18_19_Cosmology.pdf3.35 MB
Lecture_20_Cosmology.pdf11.36 MB
Lecture_8_Cosmology.pdf1.58 MB
Lecture_21_22_Cosmology.pdf7.51 MB
Lecture_23_24_Cosmology.pdf39.19 MB
Cosmology_book.pdf58.15 MB
Page last updated: 29 May 2020 at 14:46