Docente
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LAMAGNA LUCA
(programma)
Part 1 – Introduction to Physical Cosmology
(Lectures 1-4)
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- Historical Overview
- Cosmological principle
- Equivalence Principle
- Curvature and its implications
- Metric
- The Friedmann-Robertson-Walker metric
- Dynamics in General Relativity
- Friedmann’s equations
- Density parameters and cosmological constant
- Peculiar solutions to Friedmann’s equations
- Benchmark model
- Age of the universe
- Distances in an expanding universe
Part 2 – Proofs of the Big Bang:
Geometry and Expansion
(Lectures 5-8)
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- Distance measurements: definitions
- Standard candles and standard rulers
- The distance ladder
- Cosmological standard candles
- Type Ia supernovae: observational issues
- Type Ia supernovae standardization
- Observational results
- Recent Dark Energy SN results
- The measurement of H0
Part 3 – Proofs of the Big Bang:
the Cosmic Microwave Background
(Lectures 9-16)
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Part 3a – The CMB spectrum
- Discovery and meaning of the CMB
- A modern take on the nature of the CMB
- Origin of the CMB blackbody
- Recombination, photon decoupling, last scattering
- CMB: the confirmation years
- The (not so) final word by COBE
- COBE mission and results overview
- Brief summary of spectral distortions
Part 3b – CMB anisotropies
- CMB anisotropies: basic quantities
- CMB power spectrum: structure and features
- Temperature anisotropy measurements
- From maps to power spectra (to cosmology)
- CMB temperature anisotropy results
- CMB polarization anisotropies
- CMB polarization: current status and near future
Part 4 – Proofs of the Big Bang:
the abundances of light nuclei
(Lecture 17)
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- Big Bang Nucleosynthesis
- Deuterium synthesis
- The way to Helium
- End of BBN
- Observational predictions
- Observational issues
- Current observational constraints
Part 5 – Large scale structure
(Lecture 18-20)
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- Tools for large scale structureinvestigations
- The matter power spectrum and the 2-point correlation function
- Baryon Acoustic Oscillations
- Cosmological results from BAO
- Weak gravitational lensing
- Cosmology with WL surveys
Part 6 – Galaxy clusters
(Lecture 21-22)
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- Galaxy Clusters: definitions
- Observable properties
- Cosmology with Galaxy Clusters
Part 7 – The intervening universe
(Lecture 23)
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- The Intergalactic medium
- Reionization
- Observational probes of reionization
- HI mapping through the 21cm line
Part 8 – Bayesian methods in cosmology
(Lecture 24)
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- The Bayes’ theorem
- Advantages of the Bayesian approach
- Bayesian inference
- Model selection
- Markov Chain Monte Carlo methods
S. Serjeant, “Observational Cosmology”, Cambridge University Press, 2010
B. Ryden, "Introduction to Cosmology", Cambridge University Press, 2017
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