ASTR 3730: ASTROPHYSICS I  - Stellar & Interstellar

Course Timetable: Fall 2006


 
 
1 Aug. 28
 What Astrophysics is about - Course overview and logistics
2 Aug. 30
 Units in Astrophysics: distance, frequency, wavelength, energy. Definiton of flux and specific intensity.
3 Sep. 1
 Relation between flux and specific intensity. Magnitudes and colors.
Sep. 4
 Labor Day
4
Sep. 6
 Radiation processes: power loss from an accelerated charge - cyclotron radiation - synchrotron radiation
5
Sep. 8
 Synchrotron radiation (cont.)  - Bremsstrahlung
6
Sep. 11
 Bremmsstrahlung (cont.) - Radiative transfer: emission and absorption coefficients
7
Sep. 13
 The equation of radiative transfer - Optical depth; in-class problem followed by discussion
8
Sep. 15
 Blackbody radiation: general - Planck spectrum - Wien displacement law - Rayleigh-Jeans law - bolometric flux - effective temperature.
9
Sep. 18
 Brightness temperature -- optical depth effects on blackbody emission -- Bound-bound transitions
10 Sep. 20
 Bound-free transitions --- Boltzmann equation -- Saha equation
11 Sep. 22
 Emission and absorption spectra
12 Sep. 25
 Broadening of spectral lines: natural broadening, Doppler broadening, collisional and pressure broadening
13 Sep. 27
Electron-photon scattering: Thomson scattering, Compton scattering, Inverse Compton.
Stars:  introduction
14 Sep. 29
Population I, II and III  stars -  Basic assumptions of stellar theory
15 Oct. 2
 Review
16 Oct. 4
 In-class Quiz # I
17 Oct. 6
 Stars: basic assumptions (cont.) - Observational properties of stars
18 Oct. 9
 The (observational) H-R diagram - Spectral classification - mass measurements - mass-luminosity relation
19
Oct. 11
 Stellar Structure ---  Characteristic timescales of stellar evolution: dynamical, Kelvin-Helmholtz and nuclear timescales.
20 Oct. 13
 Equations of stellar structure: mass conservation, energy conservation, hydrostatic equilibrium
21 Oct. 16
 Virial Theorem - Equation of energy transport
22 Oct. 18
 Guest lecture by A. Hamilton on introduction to General Relativity
23 Oct. 20
 Equation of state - opacity
24 Oct. 23
 Energy generation in stars: fusion
25 Oct. 25
 Hydrogen burning: P-P cycle and CNO cycle - Helium burning: triple-alpha reaction - Carbon and Oxygen burning
26 Oct. 27
 Silicon burning and nuclear statistical equilibrium - neutron capture and the production of elements heavier than Iron
27 Oct. 30
 Stellar evolution: Introduction
28 Nov. 1
 Review
29
Nov. 3
 In-class Quiz # 2
30 Nov. 6
Stellar evolution: main sequence and post-main sequence phase - convection
31 Nov. 8
 Degeneray pressure
32 Nov. 10
 Degenary pressure (cont.) - last stages of evolution of low-mass stars -- planetary nebulae
33 Nov. 13
 White Dwarfs
34 Nov. 15
 Type Ia Supernovae - The end state of massive stars
35 Nov. 17
 Type II Supernovae  - Supernova remnants
Nov. 20
 Fall break
Nov.22
 Fall break
Nov. 24
 Thanksgiving holiday
36
Nov. 27
 Neutron Stars: general properties
37
Nov. 29
 How neutron stars manifest themselves: Pulsars
38
Dec. 1
 Black Holes
39
Dec. 4
 Black Holes (cont.) - Gamma-Ray Bursts
40 Dec. 6
 Star formation: The  Interstellar Medium - Molecular clouds
41 Dec. 8
 Star Formation: Jeans Mass - Young Stellar Objects
42 Dec. 11
 Review
43 Dec. 13
 In-class Quiz # 3
44 Dec. 15
 Video on Black Holes
 

 
 


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