# Difference between revisions of "Radiative Processes in Astrophysics"

(82 intermediate revisions by 2 users not shown) | |||

Line 1: | Line 1: | ||

An introduction to the basic physics of astronomy and astrophysics at the graduate level. Principles of energy transfer by radiation. Elements of classical and quantum theory of photon emission; bremsstrahlung, synchrotron radiation. Compton scattering, plasma effects, atomic and molecular electromagnetic transitions. With applications to current research into astrophysical phenomena. | An introduction to the basic physics of astronomy and astrophysics at the graduate level. Principles of energy transfer by radiation. Elements of classical and quantum theory of photon emission; bremsstrahlung, synchrotron radiation. Compton scattering, plasma effects, atomic and molecular electromagnetic transitions. With applications to current research into astrophysical phenomena. | ||

− | These are a collection of lectures covering topics in an introductory graduate astrophysics course on radiative processes. The subject matter is loosely drawn from [http://adsabs.harvard.edu/abs/1981PEPI...25..432L | + | These are a collection of lectures covering topics in an introductory graduate astrophysics course on radiative processes. The subject matter is loosely drawn from [http://adsabs.harvard.edu/abs/1981PEPI...25..432L Radiative Processes in Astrophysics] by Rybicki & Lightman. |

At the end of the semester, each student will develop one new lecture on a subject of their choice to add to this website. | At the end of the semester, each student will develop one new lecture on a subject of their choice to add to this website. | ||

Line 9: | Line 9: | ||

=== Syllabus === | === Syllabus === | ||

− | * [https://github.com/AaronParsons/astro207/blob/ | + | * [https://github.com/AaronParsons/astro207/blob/main/syllabus.docx Syllabus] |

− | * [https://github.com/AaronParsons/astro207/blob/ | + | * [https://github.com/AaronParsons/astro207/blob/main/constants/constants.pdf Sheet of constants and equations] |

=== Useful External References === | === Useful External References === | ||

Line 26: | Line 26: | ||

== Topics by Date == | == Topics by Date == | ||

− | ====( | + | ====(Aug. 26) Radiative Quantities (RL 1.1-1.3; Mil 1.1-1.3)==== |

* class mechanics | * class mechanics | ||

** syllabus | ** syllabus | ||

Line 40: | Line 40: | ||

*** [[Python Installation and Basic Programming]] | *** [[Python Installation and Basic Programming]] | ||

*** [[Revision Control]] (class repository) | *** [[Revision Control]] (class repository) | ||

+ | *** [[Jupyter Notebooks]] (for visualizations and collaborating) | ||

* Topics | * Topics | ||

** [[Specific Intensity]] | ** [[Specific Intensity]] | ||

* Activities | * Activities | ||

− | ** | + | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/01_Activity_Sheet.ipynb Activity Sheet 1] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/01_Activity_Sheet.ipyn datahub.berkeley.edu]) |

+ | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/01_Activity_Sheet_Answers.ipynb Activity Sheet 1 solutions] | ||

− | ====( | + | ====(Aug. 31) radiative transport (RL 1.4; Mil 2.1-2.2)==== |

* Topics | * Topics | ||

** [[Radiative Transfer Equation]] | ** [[Radiative Transfer Equation]] | ||

** [[Optical Depth]] | ** [[Optical Depth]] | ||

* Activities | * Activities | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz02.ipynb Activity Sheet 2] | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz02-ans.ipynb Activity Sheet 2 solutions] | ||

** sliding pennies | ** sliding pennies | ||

− | + | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps01.pdf Problem Set 1] assigned | |

− | + | ** [https://github.com/AaronParsons/astro207/blob/main/vega_spectrum.dat vega_spectrum.dat] | |

− | * [https://github.com/AaronParsons/astro207/blob/ | + | ** [https://github.com/AaronParsons/astro207/blob/main/bessel_V.dat bessel_V.dat] |

− | ** [https://github.com/AaronParsons/astro207/blob/ | ||

− | ** [https://github.com/AaronParsons/astro207/blob/ | ||

− | ====( | + | ==== (Sep. 2) Maxwell's Equations and Plane Waves ==== |

+ | * Topics | ||

+ | ** [[Maxwell Equations]] for Electromagnetic Waves | ||

+ | ** [[Electromagnetic Plane Waves]] | ||

+ | ** [[Energy Density]] of Electromagnetic Waves | ||

+ | ** [[Larmor Formula]] | ||

+ | ** [[Fourier Transform]] | ||

+ | * Activities | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz03.ipynb Activity Sheet 3] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz03.ipynb datahub.berkeley.edu]) | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz03-ans.ipynb Activity Sheet 3 solutions] | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/notebooks/Larmor%20Radiation.ipynb Larmor Demo] | ||

+ | ** Impedance of free space | ||

+ | |||

+ | ====(Sep. 7) scattering and absorption (RL 1.4, 1.7; Mil 2.1-2.2)==== | ||

* Topics: | * Topics: | ||

** [[Basic Scattering]] | ** [[Basic Scattering]] | ||

** [[Central Limit Theorem]] | ** [[Central Limit Theorem]] | ||

** [[Random Walks]] | ** [[Random Walks]] | ||

− | ** [[ | + | ** [[Degeneracy]] |

* Activities | * Activities | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz04.ipynb Activity Sheet 4] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz04.ipynb datahub.berkeley.edu]) | ||

** photon diffusion | ** photon diffusion | ||

** high beams in fog | ** high beams in fog | ||

+ | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps02.pdf Problem Set 2] Assigned | ||

− | ==== ( | + | ==== (Sep. 9) thermodynamic equilibrium (RL 1.5) ==== |

* Topics | * Topics | ||

+ | ** [[Black-Body Radiation]] (and Kirchoff's Law) | ||

** [[Boltzmann distribution]] | ** [[Boltzmann distribution]] | ||

** [[Maxwellian velocity distribution]] | ** [[Maxwellian velocity distribution]] | ||

** [[Local Thermodynamic Equilibrium]] | ** [[Local Thermodynamic Equilibrium]] | ||

* Activities | * Activities | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz05.ipynb Activity Sheet 5] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz05.ipynb datahub.berkeley.edu]) | ||

** flipping pennies, rolling dice | ** flipping pennies, rolling dice | ||

** types of temperature | ** types of temperature | ||

− | |||

− | ==== ( | + | ==== (Sep. 14) semi-classical hydrogen ==== |

* Topics: | * Topics: | ||

** [[Classical Bohr Atom]] | ** [[Classical Bohr Atom]] | ||

* Activities | * Activities | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz06.ipynb Activity Sheet 6] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz06.ipynb datahub.berkeley.edu]) | ||

** rederivation | ** rederivation | ||

** Rydberg | ** Rydberg | ||

** dipoles/quadrupoles | ** dipoles/quadrupoles | ||

+ | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps03.pdf Problem Set 3] Assigned | ||

− | ==== ( | + | ==== (Sep. 16) Einstein coefficients==== |

* Topics: | * Topics: | ||

** [[Einstein Coefficients]] | ** [[Einstein Coefficients]] | ||

** [[Radiative Equilibrium]] | ** [[Radiative Equilibrium]] | ||

* Activities | * Activities | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz07.ipynb Activity Sheet 7] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz07.ipynb datahub.berkeley.edu]) | ||

** estimating Einstein A for Ly-alpha | ** estimating Einstein A for Ly-alpha | ||

** effective photon absorption crosssection | ** effective photon absorption crosssection | ||

− | |||

− | ==== ( | + | ==== (Sep. 21) spectral line broadening==== |

+ | * Topics | ||

+ | ** [[Line Profile Functions]] | ||

+ | ** [[Zeeman splitting]] | ||

+ | * Activities | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz08.ipynb Activity Sheet 8] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz08.ipynb datahub.berkeley.edu]) | ||

+ | ** what can you learn from a spectral line | ||

+ | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps04.pdf Problem Set 4] Assigned | ||

+ | |||

+ | ==== (Sep. 23) radiation from accelerating charges (RL 3.3-3.4)==== | ||

* Topics | * Topics | ||

− | |||

** [[Estimating Atomic Transition Strengths]] | ** [[Estimating Atomic Transition Strengths]] | ||

** radiative dipole transitions | ** radiative dipole transitions | ||

** photoexcitation cross-section | ** photoexcitation cross-section | ||

* Activities | * Activities | ||

− | ** Einstein A for | + | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz09.ipynb Activity Sheet 9] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz09.ipynb datahub.berkeley.edu]) |

+ | ** Einstein A for He+ | ||

− | ====( | + | ==== (Sep. 28) molecular lines (RL 11) ==== |

* Topics | * Topics | ||

− | ** [[ | + | ** [[Atomic and Molecular Quantum Numbers]] |

+ | ** [[Rotational Transitions]] | ||

* Activities | * Activities | ||

− | ** | + | ** CO Lecture |

− | * | + | * No Problem Set this week |

− | ==== ( | + | ==== (Sep. 30) rovibrational transitions (RL 11) ==== |

* Topics | * Topics | ||

− | ** [[ | + | ** [[Rovibrational Transitions]] |

− | |||

* Activities | * Activities | ||

− | ** | + | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz11.ipynb Activity Sheet 11] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz11.ipynb datahub.berkeley.edu]) |

− | ** | + | ** Cooling with CO |

− | |||

− | ==== ( | + | ====(Oct. 5) masers ==== |

* Topics | * Topics | ||

** [[Masers]] | ** [[Masers]] | ||

− | |||

* Activities | * Activities | ||

− | ** | + | ** masers as transistors |

+ | ** laser pointers | ||

+ | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps05.pdf Problem Set 5] assigned | ||

− | ==== ( | + | ==== (Oct. 7) collisional excitations ==== |

* Topics: | * Topics: | ||

+ | ** [[Detailed Balance]] | ||

** [[Collisional Excitations]] | ** [[Collisional Excitations]] | ||

− | |||

* Activities | * Activities | ||

− | ** more CO molecular | + | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz12.ipynb Activity Sheet 12] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz12.ipynb datahub.berkeley.edu]) |

+ | ** more CO molecular clouds | ||

** collisional line-driven cooling | ** collisional line-driven cooling | ||

− | ==== ( | + | ==== (Oct. 12) free-free emission==== |

* Topics | * Topics | ||

** [[Thermal Bremsstrahlung]] (RL 5.1-5.3) | ** [[Thermal Bremsstrahlung]] (RL 5.1-5.3) | ||

Line 142: | Line 172: | ||

** free-free polarization | ** free-free polarization | ||

** simulating a free-free interaction | ** simulating a free-free interaction | ||

− | * [https://github.com/AaronParsons/astro207/blob/ | + | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps06.pdf Problem Set 6] assigned |

− | ==== ( | + | ==== (Oct. 14) charged cross-sections (RL 1.7-1.8; Mil 2.3-2.5)==== |

* Topics: | * Topics: | ||

** [[Coulomb Focusing]] | ** [[Coulomb Focusing]] | ||

** [[Thomson Scattering]] | ** [[Thomson Scattering]] | ||

* Activities | * Activities | ||

− | ** | + | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz13.ipynb Activity Sheet 13] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz13.ipynb datahub.berkeley.edu]) |

+ | ** electrons in the IGM | ||

− | ==== ( | + | ==== (Oct. 19) bound-free transitions ==== |

* Topics | * Topics | ||

** [[Milne Relation]] | ** [[Milne Relation]] | ||

** [[Saha Equation]] | ** [[Saha Equation]] | ||

− | |||

* Activities | * Activities | ||

** stromgren spheres | ** stromgren spheres | ||

− | * | + | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps07.pdf Problem Set 7] assigned |

− | |||

− | ==== ( | + | ==== (Oct. 21) LTE and non-LTE ==== |

* Topics | * Topics | ||

− | ** | + | ** [[Recombination Coefficients]] |

− | ** | + | ** [[Review of Equilibria]] |

− | |||

− | |||

* Activities | * Activities | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz14.ipynb Activity Sheet 14] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz14.ipynb datahub.berkeley.edu]) | ||

** estimating recombination coefficients | ** estimating recombination coefficients | ||

+ | ** work out in detail redshift of recombination | ||

− | ==== ( | + | ==== (Oct. 26) plasma effects==== |

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

* Topics | * Topics | ||

** [[Plasma Frequency]] | ** [[Plasma Frequency]] | ||

− | ** dispersion measure | + | ** [[dispersion measure]] (RL 8.1) |

** polarization | ** polarization | ||

** [[Faraday rotation]] (RL 8.1-8.2) | ** [[Faraday rotation]] (RL 8.1-8.2) | ||

+ | ** [[Stokes parameters]] | ||

* Activities | * Activities | ||

** start de-dispersion coding | ** start de-dispersion coding | ||

+ | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps08.pdf Problem Set 8] assigned | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/pulsar.dat pulsar.dat] | ||

− | + | ==== (Oct. 28) compton scattering ==== | |

− | |||

− | ==== ( | ||

* Topics | * Topics | ||

** [[Lorentz transformations]] | ** [[Lorentz transformations]] | ||

Line 194: | Line 218: | ||

** [[Compton Scattering]] | ** [[Compton Scattering]] | ||

* Activities | * Activities | ||

+ | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz15.ipynb Activity Sheet 15] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz15.ipynb datahub.berkeley.edu]) | ||

** relativistic intuition, velocity raptor | ** relativistic intuition, velocity raptor | ||

− | * | + | ** CMB coupling via compton |

− | ==== ( | + | ==== (Nov. 2) Inverse Compton scattering==== |

* Topics: | * Topics: | ||

** [[Inverse Compton Scattering]] | ** [[Inverse Compton Scattering]] | ||

Line 204: | Line 229: | ||

** single scattering versus ensemble scattering | ** single scattering versus ensemble scattering | ||

** compton saturation | ** compton saturation | ||

+ | * No problem set | ||

− | ==== ( | + | ==== (Nov. 4) Synchrotron Introduction ==== |

* Topics: | * Topics: | ||

** [[Introduction to Synchrotron Radiation and Relativistic Beaming]] | ** [[Introduction to Synchrotron Radiation and Relativistic Beaming]] | ||

− | ** [[Synchrotron Frequency]] | + | <!-- ** [[Synchrotron Frequency]] |

− | ** [[Synchrotron Polarization]] | + | ** [[Synchrotron Polarization]] --> |

* Activities | * Activities | ||

− | ** | + | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz16.ipynb Activity Sheet 16] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz16.ipynb datahub.berkeley.edu]) |

+ | ** beaming, superluminal motion, monte carlo compton | ||

− | ==== ( | + | ==== (Nov. 9) Synchrotron Radiation ==== |

* Topics | * Topics | ||

− | ** [[Synchrotron | + | ** [[Synchrotron Radiation]] |

− | ** [[Single Electron Power Spectrum]] | + | <!-- ** [[Single Electron Power Spectrum]] |

** [[Synchrotron Spectrum]] (RL 6.1-6.8) | ** [[Synchrotron Spectrum]] (RL 6.1-6.8) | ||

− | ** [[Effect of Cooling Time on Synchrotron Spectra]] | + | ** [[Effect of Cooling Time on Synchrotron Spectra]] --> |

* Activities | * Activities | ||

** re-deriving synchrotron spectrum | ** re-deriving synchrotron spectrum | ||

** phenomenological description of synchrotron decay | ** phenomenological description of synchrotron decay | ||

+ | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps09.pdf Problem Set 9] assigned | ||

+ | |||

+ | ==== (Nov. 11) No Class (Veterans day) ==== | ||

− | ==== | + | ==== (Nov. 16) Synchrotron Self-Interactions ==== |

* Topics | * Topics | ||

− | ** [[Synchrotron Self- | + | ** [[Synchrotron Self-Interactions]] |

− | ** [[Synchrotron Self-Compton]] | + | <!-- ** [[Synchrotron Self-Compton]] |

− | ** [[Compton Catastrophe]] | + | ** [[Compton Catastrophe]] --> |

* Activities | * Activities | ||

− | ** | + | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz17.ipynb Activity Sheet 17] (on [http://datahub.berkeley.edu/user-redirect/interact?account=AaronParsons&repo=astro207&branch=main&path=quiz_2021/Quiz17.ipynb datahub.berkeley.edu]) |

+ | ** reading SSC spectra, inferring castrophe | ||

− | ==== ( | + | ==== (Nov. 18) dust and grains==== |

* Topics: | * Topics: | ||

** [[Dust Absorption and Scattering]] | ** [[Dust Absorption and Scattering]] | ||

** dust formation/sublimation | ** dust formation/sublimation | ||

+ | ** [[Poynting-Robertson Effect]] | ||

* Activities | * Activities | ||

− | * | + | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps10.pdf Problem Set 10] assigned |

+ | |||

+ | ==== (Nov. 23) No Class ==== | ||

+ | ==== (Nov. 25) No Class ==== | ||

− | ==== ( | + | ==== (Dec. 1) radiative diffusion ==== |

* Topics: | * Topics: | ||

** [[Radiative Diffusion]] | ** [[Radiative Diffusion]] | ||

Line 247: | Line 282: | ||

** | ** | ||

− | ==== ( | + | ==== (Dec. 2) Review ==== |

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

− | |||

* Review | * Review | ||

== Misc Topics == | == Misc Topics == | ||

+ | ** [[21cm Transition]] | ||

** [[Wouthuysen Field effect]] | ** [[Wouthuysen Field effect]] | ||

** [[Radiative Transfer Codes]] | ** [[Radiative Transfer Codes]] | ||

** [[Frequency Redistribution in Non-Coherent Scattering]] | ** [[Frequency Redistribution in Non-Coherent Scattering]] | ||

+ | ** [[Cherenkov Radiation]] | ||

+ | ** [[Monte Carlo Methods]] | ||

+ | ** [[Numerical Methods for Ordinary Differential Equations]] | ||

== Legacy Lecture Notes == | == Legacy Lecture Notes == |

## Latest revision as of 10:27, 2 September 2021

An introduction to the basic physics of astronomy and astrophysics at the graduate level. Principles of energy transfer by radiation. Elements of classical and quantum theory of photon emission; bremsstrahlung, synchrotron radiation. Compton scattering, plasma effects, atomic and molecular electromagnetic transitions. With applications to current research into astrophysical phenomena.

These are a collection of lectures covering topics in an introductory graduate astrophysics course on radiative processes. The subject matter is loosely drawn from Radiative Processes in Astrophysics by Rybicki & Lightman.

At the end of the semester, each student will develop one new lecture on a subject of their choice to add to this website.

### Class Code Repository[edit]

http://github.com/AaronParsons/astro207

### Syllabus[edit]

### Useful External References[edit]

- Rybicki and Lightman,
**Radiative Processes in Astrophysics***(course reference)* - Mihalas and Mihalas,
**Foundations of Radiation Hydrodynamics** - Osterbrock and Ferland,
**Astrophysics of Gaseous Nebulae and Active Galactic Nuclei** - Shu, '
**The Physics of Astrophysics, Volume I: Radiation** - Longair,
**High Energy Astrophysics** - Mihalas,
**Stellar Atmospheres** - Rutten,
**Radiative Transfer in Stellar Atmospheres** - Eddie Baron's GRK Lectures on Radiation Transport
- Tony Readhead's Notes
- Feynman's Lectures on Physics, Volume II

## Topics by Date[edit]

#### (Aug. 26) Radiative Quantities (RL 1.1-1.3; Mil 1.1-1.3)[edit]

- class mechanics
- syllabus
- references
- Rybicki & Lightman
- Astrobaki: learn better by teaching

- tools for figuring stuff out
- theoretical derivation
- order-of-magnitude estimation
- physical intuition (hands-on modeling, analogies)
- numerical simulation

- programming
- Python Installation and Basic Programming
- Revision Control (class repository)
- Jupyter Notebooks (for visualizations and collaborating)

- Topics
- Activities

#### (Aug. 31) radiative transport (RL 1.4; Mil 2.1-2.2)[edit]

- Topics
- Activities
- Activity Sheet 2
- Activity Sheet 2 solutions
- sliding pennies

- Problem Set 1 assigned

#### (Sep. 2) Maxwell's Equations and Plane Waves[edit]

- Topics
- Maxwell Equations for Electromagnetic Waves
- Electromagnetic Plane Waves
- Energy Density of Electromagnetic Waves
- Larmor Formula
- Fourier Transform

- Activities
- Activity Sheet 3 (on datahub.berkeley.edu)
- Activity Sheet 3 solutions
- Larmor Demo
- Impedance of free space

#### (Sep. 7) scattering and absorption (RL 1.4, 1.7; Mil 2.1-2.2)[edit]

- Topics:
- Activities
- Activity Sheet 4 (on datahub.berkeley.edu)
- photon diffusion
- high beams in fog

- Problem Set 2 Assigned

#### (Sep. 9) thermodynamic equilibrium (RL 1.5)[edit]

- Topics
- Activities
- Activity Sheet 5 (on datahub.berkeley.edu)
- flipping pennies, rolling dice
- types of temperature

#### (Sep. 14) semi-classical hydrogen[edit]

- Topics:
- Activities
- Activity Sheet 6 (on datahub.berkeley.edu)
- rederivation
- Rydberg
- dipoles/quadrupoles

- Problem Set 3 Assigned

#### (Sep. 16) Einstein coefficients[edit]

- Topics:
- Activities
- Activity Sheet 7 (on datahub.berkeley.edu)
- estimating Einstein A for Ly-alpha
- effective photon absorption crosssection

#### (Sep. 21) spectral line broadening[edit]

- Topics
- Activities
- Activity Sheet 8 (on datahub.berkeley.edu)
- what can you learn from a spectral line

- Problem Set 4 Assigned

#### (Sep. 23) radiation from accelerating charges (RL 3.3-3.4)[edit]

- Topics
- Estimating Atomic Transition Strengths
- radiative dipole transitions
- photoexcitation cross-section

- Activities
- Activity Sheet 9 (on datahub.berkeley.edu)
- Einstein A for He+

#### (Sep. 28) molecular lines (RL 11)[edit]

- Topics
- Activities
- CO Lecture

- No Problem Set this week

#### (Sep. 30) rovibrational transitions (RL 11)[edit]

- Topics
- Activities
- Activity Sheet 11 (on datahub.berkeley.edu)
- Cooling with CO

#### (Oct. 5) masers[edit]

- Topics
- Activities
- masers as transistors
- laser pointers

- Problem Set 5 assigned

#### (Oct. 7) collisional excitations[edit]

- Topics:
- Activities
- Activity Sheet 12 (on datahub.berkeley.edu)
- more CO molecular clouds
- collisional line-driven cooling

#### (Oct. 12) free-free emission[edit]

- Topics
- Thermal Bremsstrahlung (RL 5.1-5.3)
- Opacity
- Kramer's Opacity

- Activities
- free-free polarization
- simulating a free-free interaction

- Problem Set 6 assigned

#### (Oct. 14) charged cross-sections (RL 1.7-1.8; Mil 2.3-2.5)[edit]

- Topics:
- Activities
- Activity Sheet 13 (on datahub.berkeley.edu)
- electrons in the IGM

#### (Oct. 19) bound-free transitions[edit]

- Topics
- Activities
- stromgren spheres

- Problem Set 7 assigned

#### (Oct. 21) LTE and non-LTE[edit]

- Topics
- Activities
- Activity Sheet 14 (on datahub.berkeley.edu)
- estimating recombination coefficients
- work out in detail redshift of recombination

#### (Oct. 26) plasma effects[edit]

- Topics
- Plasma Frequency
- dispersion measure (RL 8.1)
- polarization
- Faraday rotation (RL 8.1-8.2)
- Stokes parameters

- Activities
- start de-dispersion coding

- Problem Set 8 assigned

#### (Oct. 28) compton scattering[edit]

- Topics
- Lorentz transformations
- Doppler shift
- radiation from relativistic charges (RL 4.1, 4.2, 4.8; Grif 10.1)
- Compton Scattering

- Activities
- Activity Sheet 15 (on datahub.berkeley.edu)
- relativistic intuition, velocity raptor
- CMB coupling via compton

#### (Nov. 2) Inverse Compton scattering[edit]

- Topics:
- Inverse Compton Scattering
- SZ Effect (RL 7.1-7.5)

- Activities
- single scattering versus ensemble scattering
- compton saturation

- No problem set

#### (Nov. 4) Synchrotron Introduction[edit]

- Topics:
- Activities
- Activity Sheet 16 (on datahub.berkeley.edu)
- beaming, superluminal motion, monte carlo compton

#### (Nov. 9) Synchrotron Radiation[edit]

- Topics
- Activities
- re-deriving synchrotron spectrum
- phenomenological description of synchrotron decay

- Problem Set 9 assigned

#### (Nov. 11) No Class (Veterans day)[edit]

#### (Nov. 16) Synchrotron Self-Interactions[edit]

- Topics
- Activities
- Activity Sheet 17 (on datahub.berkeley.edu)
- reading SSC spectra, inferring castrophe

#### (Nov. 18) dust and grains[edit]

- Topics:
- Dust Absorption and Scattering
- dust formation/sublimation
- Poynting-Robertson Effect

- Activities
- Problem Set 10 assigned

#### (Nov. 23) No Class[edit]

#### (Nov. 25) No Class[edit]

#### (Dec. 1) radiative diffusion[edit]

- Topics:
- Radiative Diffusion
- bolometric radiative equilibrium
- greenhouse effect

- Activities

#### (Dec. 2) Review[edit]

- Review

## Misc Topics[edit]

## Legacy Lecture Notes[edit]

- Radiation Lecture 01
- Radiation Lecture 02
- Radiation Lecture 03
- Radiation Lecture 04
- Radiation Lecture 05
- Radiation Lecture 06
- Radiation Lecture 07
- Radiation Lecture 08
- Radiation Lecture 09
- Radiation Lecture 10
- Radiation Lecture 11
- Radiation Lecture 12
- Radiation Lecture 13
- Radiation Lecture 14
- Radiation Lecture 15
- Radiation Lecture 16
- Radiation Lecture 17
- Radiation Lecture 18
- Radiation Lecture 19
- Radiation Lecture 20
- Radiation Lecture 21
- Radiation Lecture 22
- Radiation Lecture 23
- Radiation Lecture 24
- Radiation Lecture 25
- Radiation Lecture 26