New Mexico State University

Department of Astronomy

PO Box 30001, MSC 4500 Las Cruces, NM 88003

wlyra - nospam - nmsu.edu

+1 575-646-1400

Lectures for the course *Radiative Processes in Astrophysics*, upper level undergraduate course at CSUN. Offered in the spring since 2016.

Notes

Chapter 4 (Radiative Transfer);

Chapter 5 (Stellar Structure);

Chapter 6 (Stellar Evolution).

Course Structure

- Class 1
- Syllabus and overall overview.

- Class 2
- Principles of Radiative Transfer. Flux and magnitudes.

- Class 3
- Intensity, luminosity, Stefan-Boltzmann law.

- Class 4
- Wien's displacement law, intro to Kirchhoff's laws.

- Class 5
- Absorption and emission. Optical depth.

- Class 6
- Equation of radiative transfer. Solutions in optically thin and thick limits.

- Class 7
- Bremsstrahlung.

- Class 8
- From Bremsstrahlung to Blackbody. Formation of the continuum.

- Class 9
- Microphysics of radiative transfer, Einstein coefficients.

- Class 10
- Scattering

- Class 11
- Radiation pressure. Plane-parallel approximation, radiative equilibrium. Gray approximation.

- Class 12
- Rossland approximation; Rossland, Planck mean opacities. Eddington approximation.

- Class 13
- Stellar energy and virial theorem.

- Class 14
- Convection and full equations of stellar structure.

- Class 15
- Boltzmann and Saha equations

- Class 16
- Polytropes.

- Class 17
- Nucleosynthesis. Coulomb barrier and tunneling.

- Class 18
- Nucleosynthesis. Proton-proton chain, CNO, triple alpha.

- Class 19
- Low mass stellar evolution. Core and shell burning.

- Class 20
- Low mass stellar evolution. Degeneracy and helium flash.

- Class 21
- High mass stellar evolution. Climbing the alpha ladder. Photodisintegration.

- Class 22
- High mass stellar evolution. Powering a supernova.

- Class 23
- Stellar remnants. Structure of white dwarfs.