|TITLE||Introduction to Astronomy and Cosmology|
|LEVEL||03 - Years 2, 3, 4 in Modular Undergraduate Course|
|DESCRIPTION||The study-unit aims to give a holistic understanding of astronomy, astrophysics and cosmology with an introduction to each topic with qualitative and quantitative aspects. In the astronomy component a width breadth of current astronomy techniques and results will be covered. In the cosmology component a history of the big bang onwards will be given which will be followed by the Friedmann interpretation of the different epochs of the Universe.
A more detailed breakdown of the study-unit is given below:
- History of the Universe: The Observable Universe, Distances within the Universe, The Copernican Principle, Olber's Paradox, The Epochs of the Big Bang and Problems, Future of the Universe;
- Gravity: Newtonian Gravity and its Problems, The Weak Equivalence Principle and its Tests, The Strong Equivalence Principle and its Applications (Light Bending, Gravitational Redshift, Gravitational Time Dilation), Basic General Relativity, The Friedmann-Lemaître-Robertson-Walker Metric, The Scale Factor and its Relation to Cosmological Redshift;
- The Accelerating Universe: Hubble's Law, Age of the Universe, The Friedmann Equations, The Fluid Equation, The Curvature Constant of the Universe, Radiation/Matter/Cosmological Constant Dominated Universe Evolution, The Density Parameter, The Deceleration Parameter, The Cosmic Microwave Background Radiation, Inflation.
- Astronomy Through the Ages: The Hellenistic view of the cosmos; Geocentricity/Ptolemaic system; the heliocentric view of the cosmos; the Copernican principle; key figures in astronomy (e.g. Ptolemy, Eratosthenes, Aristarchus, Copernicus, Brahe, Kepler, Galileo, Newton, Herschel, Slipher, Hubble, Gamow, Eddington); important concepts & ideas, including parallax, spectroscopy, expansion of the universe, cosmological principle;
- The Solar System and Exoplanets: The sun; the planets in our solar system; planetary formation; exoplanets; tools & techniques in the search for and characterisation of exo-solar planets;
- Star Formation & Evolution: Nebulae, cloud collapse, protostars; the Hertzsprung-Russell diagram; main-sequence and phases in stars' lifecycle, including post-main-sequence (e.g. novae, supernovae, neutron stars, white dwarfs, black holes);
- The Realm of Galaxies: Our Galaxy; the Hubble tuning fork diagram; galaxy formation & evolution; rotation curves & dark matter, AGN, quasars, blazars, gamma ray bursts; galaxy clusters & superclusters; the distance ladder;
- Observational Cosmology: The early universe; the cosmic microwave background; structure formation; the intergalactic medium; reionization & its sources; the accelerating expansion of the universe; the future of the cosmos.
The aim of the study-unit is to give students a broad background in the qualitative and some specific quantitative features of astronomy and cosmology. Students will be exposed to many of the standard epoch history of the big bang model as well as an in-depth description of the inner working of many astrophysical bodies. The main aim of this study-unit is to expose students to the wide arena of issues that factor into astronomy and cosmology.
By the end of the study-unit the student will be able to:
- Explain the big bang model and its predictions;
- Describe the modern explanation of how the cosmos functions;
- Calculate some of the state parameters that form part of modern cosmology;
- Describe elements of the history of astronomy;
- Explain how some astrophysical bodies form and are sustained;
- Calculate some quantities relating to issues involving making cosmological measurements.
- An Introduction to Galaxies and Cosmology, Mark H. Jones, Robert J. Lambourne, David John Adams (Cambridge University Press, 2004).
|RULES/CONDITIONS||In TAKING THIS UNIT YOU CANNOT TAKE PHY3289|
|METHOD OF ASSESSMENT||
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It should be noted that all the information in the description above applies to study-units available during the academic year 2021/2. It may be subject to change in subsequent years.