COURSE DESCRIPTION
G6005: PHYSICAL COSMOLOGY, Autumn 2002
Assoc. Prof. Arlin Crotts
The Universe is much bigger than it was 25 years ago; suddenly there is
much more room for new questions about the physical nature of the Cosmos. More
importantly, some of these questions are being answered. This is due in part
to major advances in the technology of astronomical observation, but due as
well to new cross-fertilization between astrophysics and particle physics. In
addition, there are many clever ideas that have cropped up recently due to
neither effect; maybe more people are simply more excited about cosmology these
days.
The upshot of all these recent developments is that no textbook exists that
covers the whole field. John Peacock's Cosmological Physics (1998) does
a good job of covering cosmological theory, and a satisfactory treatment of the
observational side. In truth, much of the material is too recent to be found
in any textbook. Much material will only be covered in the lecture notes
(photocopies of the lecture viewgraphs).
To accomodate the more recent material, about 10% of the course will consist
of a "journal club" where members of the class report (for about 20 minutes at
a time) on papers that interest them. These are selected from the list at the
back of this course description (or choose your own! - consult with Dr. Crotts
first). Depending on class size, each student will present two or three of
these during the semester. Dr. Crotts will lecture the bulk of the remaining
time (expect some guest lecturers for some of special topics); there will be a
final which counts for 50% of the course grade, and a short midterm quiz. A
few problem sets will also be assigned. Attendance is important!
Course Outline
- I. Thumbnail History and Gravitational Theory
- A. Data and Paradigm Shifts in Ancient Astronomy
- B. Solar System and Distant Stars
- 1. Copernicus and Heliocentric Universe
- 2. Bruno and Cosmological Principle
- 3. Interstellar Distances
- C. Island Universe
- 1. Galileo
- 2. Herschel
- 3. Wright/Kant
- 4. Kapteyn
- 5. Shapley
- D. Theories of Gravitation
- 1. Newtonian Cosmology
- a. No Static, Homogeneous, Massive Solution
- b. Birkoff's Approximation
- 2. General Relativity [Peacock, ch. 1.1-1.5]
- a. Principle of Equivalence
- b. Tensors
- c. Curvature, Parallel Transport, Connection Coeff's
- d. Einstein Field Equations
- e. Stress/Energy Terms
- i. Normal Matter: "Dust"
- ii. Pressure/Radiation
- iii. Cosmological Constant
- iv. Quintescence and Equation of State
- f. Robertson-Walker Metric [Peacock, ch. 3.1-3.3]
- g. Friedmann Equations
- h. Cosmological Models/Parameters
- E. Galaxian Universe
- 1. Curtis/Shapley Debate
- 2. Hubble
- a. Extragalactic Distance Scale
- b. Redshift/Distance Relation
- II. Extragalactic Menagerie
- A. Galaxies [Peacock, ch. 12-13]
- 1. Luminosity Function
- 2. Morphology
- a. Environmental dependence
- b. Mass dependence
- 3. Kinematic/Surface Brightness Regularities
- a. Spiral Arm Surface Brightness and Tully-Fisher Law
- b. Elliptical Core Surface Brightness and D_n vs. sigma
- 4. Evidence for Galaxian Dark Matter (Peebles 1993, sec. 18)
- a. Solar Neighborhood Measurements
- b. Milky Way Rotation
- c. LMC Dynamics
- d. Spiral Rotation Curves
- e. Disk Stability
- f. Elliptical Masses
- i. Stellar Velocity Dispersion
- ii. Planetary Nebulae
- iii. Globular Clusters
- g. Dwarf Galaxies
- h. MACHO searches [Peacock, ch. 4.5]
- 5. Radio Properties & Types
- 6. Infrared Properties
- 7. High Energy Emission
- B. Active Galactic Nuclei [Peacock, ch. 14]
- 1. Seyfert Galaxies
- a. Type I
- b. Type II
- c. Unified Model
- 2. BL Lacs
- 3. Quasars
- C. Lyman-alpha Clouds (Peebles 1993, sec. 23)
- 1. Low-redshift Identification
- 2. High-redshift Nature
- D. Intergalactic Medium
- 1. Gunn-Peterson Test
- a. neutral H
- b. He II
- c. He I
- 2. X-ray Background
- E. Gamma-Ray Bursts
- F. Highest Energy Cosmic Rays
- III. Expanding Universe [K & T, ch. 3]
- A. Tests for Cosmological Expansion
- 1. Surface Brightness versus Redshift
- 2. Temperature versus Redshift
- 3. Foreground/Background Pair Redshifts
- 4. Gravitational Lensing
- B. Distance Ladders [Jacoby et al. 1992, Peacock, ch. 5.3-5.6]
- 1. Local Kinematic Distance Indicators
- a. Parallax
- b. Moving Cluster Method
- c. Statistical Proper Motion
- 2. Stellar Indicators
- a. Main Sequence Photometry
- b. RR Lyrae Variable Stars
- c. Delta Cephei/W Virginis stars
- d. Novae
- e. Supernovae
- 3. Cluster/Nebular Indicators
- a. H II Regions
- b. Globular Clusters
- 4. Galaxian Indicators
- a. Brightest Cluster Galaxies
- b. Surface Brightness Fluctuations
- c. Tully-Fisher Relation
- d. D_n - sigma Relation
- e. Fundamental Plane
- 5. Possible Systematic Errors
- a. Observational Selection Biases
- i. Malmqvist Bias
- ii. Scott Effect
- iii. Object Confusion
- aa. Crowding
- bb. Misidentification
- b. Galaxian Evolution
- c. Deviations from Hubble Flow
- 6. Hubble Constant Measurements
- 7. Quasar Grav. Lensing Determinations [Peacock, ch. 4.1-4.4]
- C. q_0 Indicators [Peacock, ch. 3.4]
- 1. Standard Candles
- a. Brightest Galaxies
- b. High-redshift Tully-Fisher/Faber-Jackson Relation
- c. Supernovae
- 2. Standard Rulers
- a. Radio Galaxies
- b. Void Spacing
- c. theta(z) versus dz Test
- 3. Population Number Density
- D. Tests for Homogeneity and Isotropy
- 1. Radio Source Counts
- 2. Infrared Source Counts
- 3. X-ray Background
- 4. Microwave Background
- 5. Alignment Anisotropy
- IV. Galaxy Evolution [Peacock, ch. 5.1]
- A. Lookback Time
- B. Stellar Population Synthesis
- C. Observed Samples
- 1. Field Galaxies
- a. HDF, HDFS
- b. CFH sample
- ....
- 2. Cluster Galaxies
- V. Large Scale Structure [Peebles 1980, sec. 29-33; Peebles 1993, sec. 19]
- A. Galaxy-galaxy Clustering [Peacock, ch. 16]
- 1. Two-point Clustering
- 2. Power Spectrum
- 3. Three-point Measures and Bispectrum
- 4. Other Measures
- B. Galaxy Clusters
- 1. Cluster Classification
- 2. Galaxy Type versus Cluster Environment
- 3. Hot Gas in Clusters
- 4. Dark Matter in Galaxian Systems [Peacock, ch. 4.6]
- a. Small Groups
- b. Rich Clusters
- 5. Cluster-cluster Two-point Function
- C. Galaxy Superclusters
- D. Voids
- E. Bulk Motions
- F. Large Scale Perturbation Spectrum [Peacock, ch. 15]
- G. Early Structure Formation
- 1. Quasars
- 2. Galaxies
- a. High Redshift Carbon Monoxide
- b. Damped Ly alpha
- H. Non-linear Growth
- 1. Hydrodynamic Effects
- 2. Hot Dark Matter
- 3. Cold Dark Matter
- 4. Cosmic Strings
- I. Biasing
- VI. Galaxy Formation [K & T, ch. 9, Peebles 1993, sec. 25, Peacock, ch. 17]
- A. Hydrodynamic Collapse
- 1. Jeans Mass
- 2. Fragmentation Processes
- 3. Hydro/gravitational simulation
- B. Spheroidal Component Formation
- C. Disk Formation
- D. Galaxy/IGM Feedback
- VII. Microwave Background [Peebles 1993, sec. 6, Peacock, ch. 9.3-9.4, 18]
- A. Anisotropy
- 1. Dipole Term
- 2. Power Spectrum
- 3. Comparison to Galaxy Clustering
- B. Hot Gas Distortion
- 1. Cluster Sunyaev-Zeldovich Effect
- 2. High Redshift Galaxies
- C. Blackbody Spectrum
- D. Implications for Galaxy Formation
- E. Matter versus Radiation Domination
- F. COBE Results
- G. Doppler Peaks
- VIII. Dark Matter Statistical Mechanics [K&T, ch. 5, Peacock, ch. 9.1-9.2, 12.5]
- A. Hot Dark Matter Production
- B. Cold Dark Matter Production
- IX. Big Bang Nucleosynthesis [Kolb & Turner, ch. 4, Peacock, ch. 9.5]
- A. Thermal Equilibrium
- B. Neutrino Decoupling
- C. Light Element Production
- D. Theoretical versus Observed Abundances
- E. Number of Particle Families
- F. Limits on Omega_baryon
- G. Baryon/Photon Ratio
- X. Phase Transitions [K & T, App. B & ch. 7, review Peacock, ch. 6,7, 8.1-8.9]
- A. Electroweak Unification
- 1. Higgs Field
- 2. Spontaneous Symmetry Breaking
- 3. Mixing of Restored Symmetry Eigenstates
- B. Grand Unified Theories
- 1. Topological Defects [Peebles 93, sec. 11,16, Peacock, ch.10]
- a. Monopoles
- b. Strings
- c. Domain Walls
- d. Textures
- 2. Baryon Decay/Non-conservation
- XI. Baryogenesis [Kolb & Turner, ch. 6]
- A. Matter versus Antimatter in the Universe
- B. Charge/Parity Violation
- C. Non-equilibrium Decay
- XII. Inflation [Peacock, ch. 11, Kolb & Turner, ch. 8]
- A. Incompleteness of Standard Big Bang
- 1. Homogeneity Problem
- 2. Flatness/Lifetime Problem
- 3. Large Entropy of the Universe
- 4. Monopole Problem
- 5. Vanishing Cosmological Constant
- B. Original Inflation
- C. Chaotic Inflation
- D. "New" Inflation
- E. Extended Inflation
- XIII. Planck Epoch [Kolb & Turner, ch. 11; Peacock, ch. 8.10]
- A. The Universal Wavefunction
- B. Tunneling from the Vacuum State
- C. Quantum Initial Conditions
- D. Strings
- E. Etcetera ...
- XIV. Reprise
- A. Dark Matter Constraints
- 1. Baryonic Matter
- 2. Low-mass Neutrinos
- 3. Cold Dark Matter
- 4. Axions
- 5. Decaying Massive Particles
- 6. Massive Black Holes
- 7. Shadow Matter, etc.
- B. Cosmic Time [Peacock, ch. 5.2]
- 1. Cosmochronology
- 2. Globular Cluster Ages
- 3. Omega, Lambda and H_0
- C. Topology of the Universe
- D. Anthropic Principle [Peacock, ch. 3.5]
APPROXIMATE TIMELINE (please don't hold us to this!):
Week 1: I.A - I.D.1
Week 2-3: I.D.2
Week 4: I.E - II.A.3
Week 5: II.A.5 - II.B
Week 6: II.C - III.A
Week 7: III.B - III.C
Week 8: IV
Week 9: V.A - V.F
Week 10: V.G - VI.D
Week 11: VII
Week 12: VIII - IX
Week 13: favorites from X - XIV
REQUIRED TEXTS:
Cosmological Physics John A. Peacock 1998 (Cambridge Univ. Press;
Cambridge), ISBN 0521422701 (paperback); chapters on general relativity,
isotropic universe, gravitational lensing, age and distance scales, hot big
bang, matter in the Universe, galaxies and their evolution, active galaxies,
structure formation, cosmological density fields, galaxy formation, cosmic
background fluctuations, quantum mechanics, quantum fields, inflationary
cosmology
-on reserve and in the bookstore
REQUIRED ARTICLES:
R.D. Blandford, R. Narayan 1993, Ann. Rev. Astron. Astrop., 30, 311.
"Cosmological Applications of Gravitational Lenses"
G.H. Jacoby, D. Branch, R. Ciardullo, R.L. Davies, W.E. Harris, M.J. Pierce,
C.J. Pritchet, J.L. Tonry, D.L. Welch 1992, Proc. Astron. Soc. Pac., 104, 570.
"A Critical Review of Selected Techniques for Measuring Extragalactic Distances"
BACKUP TEXTS:
Gravitation and Cosmology: Principles and Applications of the General Theory
of Relativity Steven Weinberg 1972 (Wiley: New York)
-on reserve
The Early Universe Edward W. Kolb & Michael Turner 1990 (Addison-Wesley:
Redwood City, CA), chapters on Robertson-Walker Metric, Standard
Cosmology, Big Bang Nucleosynthesis, Thermodynamics, Baryogenesis,
Phase Transition, Inflation, Structure Formation, Planck Epoch,
Appendix B
-on reserve and in the bookstore
Principles of Physical Cosmology P.J.E. Peebles 1993 (Princeton U. Press:
Princeton), sections on Expanding Universe; Thermal Cosmic Background
Radiation; Walls, Strings, Monopoles, and Textures; Dark Matter; Young
Galaxies and Intergalactic Medium; Galaxy Formation
-on reserve and in the bookstore
The Early Universe: Reprints Edward W. Kolb & Michael Turner 1988 (Addison-
Wesley: Redwood City, CA)
-on reserve
Large-Scale Structure of the Universe P. J. E. Peebles 1980 (Princeton U.
Press: Princeton)
-on reserve
SUGGESTED READINGS:
D.N. Schramm: "The First Three Minutes: 1990 Version" and P. J. E. Peebles
"General Introduction" in *After* the First Three Minutes eds. Holt,
Bennett & Trimble 1990 (Amer. Inst. Physics: New York)
-on reserve
The Anthropic Cosmological Principle John Barrow & Frank Tipler 1986 (Oxford
U: New York)
-on reserve
Gravitation Charles W. Misner, Kip S. Thorne & John A. Wheeler 1973 (Freeman:
San Francisco)
-on reserve
Plus: the remaining chapters of Kolb & Turner 1990 and Peebles 1993
FUN:
Man Discovers the Galaxies R. Berendzen, R. Hart & D. Seely 1976 (Science
History Publishers: New York)
-on reserve
Darkness at Night: A Riddle of the Cosmos Edward Harrison 1987 (Harvard U:
Cambridge)
-on reserve
The First Three Minutes: A Modern View of the Origin of the Universe Steven
Weinberg 1982 (Basic Books: New York)
-on reserve
The Fifth Essence: A Search for Dark Matter in the Universe Lawrence Krauss
1990 (Basic Books: New York)
-on reserve
REFERENCES FOR DISCUSSION: (coming soon...)