Radiation Astrophysics, AST 810
Outline
- Radiation Field
- Observables: Power, Flux, Intensity
- Thermal Radiation
- Transfer Equation
- Formal Solution
- Eddington-Barbier Relations
- Line Formation
- Diffusion Approximation
- References
- Rybicki & Lightman, ``Radiative Processes in Astrophysics'',
Chapt. 1.
- Mihalas, ``Stellar Atmospheres, 2nd ed.'', chapts. 1 & 2, sect 5.1.
- Shu, ``Physics of Astrophysics, I. Radiation'', chapts 1, 2 & 3.
- Atmospheres
- Radiative Equilibrium
- Grey Atmosphere
- Solution of the Transfer Equation
- References
- Mihalas, ``Stellar Atmospheres, 2nd ed.'', chapts. 3 & 6,
sect 7.1, 7.2.
- Shu, ``Physics of Astrophysics, Radiation'', chapts 3 & 4.
- Kalkofen, ed. ``Methods in Radiative Transfer''
- Scharmer and Carlsson, ``A New Approach to Multi-level Non-LTE
Radiative Transfer Problems'', J. Comp. Phys. 59, 56, 1985
- Emission and Absorption Processes
- Cross-section, Mean free path, Transition Rates, Einstein
coefficients
- Emission and absorption processes
tb \tb \tb free-free (bremstrahlung), bound-free, bound-bound
- Line profiles
- References
- Rybicki & Lightman, ``Radiative Processes in Astrophysics'',
chapt. 10, 15.
- Mihalas, ``Stellar Atmospheres, 2nd ed.'', chapt. 4.
- Two-Level Atom
- Source Function
- Line Formation
- Thermalization Depth
- Application: Masers
- Application: H 21 cm data analysis
- References
- Mihalas, ``Stellar Atmospheres, 2nd ed.'', chapts. 10, 11
- Avrett, ``Frontiers of Astrophysics'', chapts 7 & 9.
- Verschuur & Kellermann, ``Galactic and Extra-galactic
Radio Astronomy'', chapts 2 & 4.
- Plasma Diagnostics
- Temperature and Density Diagnostics
- Application: planetary nebula
- References
- Osterbrock: ``Astrophysics of Gaseous Nebula and Active
Galactic Nuclei''
- Weymann et. al. ``Lecture Notes on Introductory Theoretical
Astrophysics''
- Radiation Hydrodynamics
- References
- Non-Thermal Emission Processes
- Synchotron Radiation
- Application:
- References
- Rybicki & Lightman, ``Radiative Processes in Astrophysics'',
chapt 6
- Shu, ``Physics of Astrophysics, I. Radiation'', chapts 18 &
19.
- Weymann et. al. ``Lecture Notes on Introductory Theoretical
Astrophysics''
Radiation Astrophysics
Bob Stein's home page,
email: stein@pa.msu.edu