Difference between revisions of "Radiative Processes in Astrophysics"
From AstroBaki
Jump to navigationJump to search| Line 51: | Line 51: | ||
** [[Optical Depth]] | ** [[Optical Depth]] | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz02.ipynb Activity Sheet 2] |
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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/ | + | * [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/main/vega_spectrum.dat vega_spectrum.dat] | ||
** [https://github.com/AaronParsons/astro207/blob/main/bessel_V.dat bessel_V.dat] | ** [https://github.com/AaronParsons/astro207/blob/main/bessel_V.dat bessel_V.dat] | ||
| Line 66: | Line 66: | ||
** [[Fourier Transform]] | ** [[Fourier Transform]] | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [https://github.com/AaronParsons/astro207/blob/main/quiz_2021/Quiz03.ipynb Activity Sheet 3] |
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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] | ** [https://github.com/AaronParsons/astro207/blob/main/notebooks/Larmor%20Radiation.ipynb Larmor Demo] | ||
** Impedance of free space | ** Impedance of free space | ||
| Line 78: | Line 78: | ||
** [[Degeneracy]] | ** [[Degeneracy]] | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** photon diffusion | ** photon diffusion | ||
** high beams in fog | ** high beams in fog | ||
| − | * [https://github.com/AaronParsons/astro207/blob/main/ | + | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps02.pdf Problem Set 2] Assigned |
==== (Sep. 9) thermodynamic equilibrium (RL 1.5) ==== | ==== (Sep. 9) thermodynamic equilibrium (RL 1.5) ==== | ||
| Line 90: | Line 90: | ||
** [[Local Thermodynamic Equilibrium]] | ** [[Local Thermodynamic Equilibrium]] | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** flipping pennies, rolling dice | ** flipping pennies, rolling dice | ||
** types of temperature | ** types of temperature | ||
| Line 98: | Line 98: | ||
** [[Classical Bohr Atom]] | ** [[Classical Bohr Atom]] | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** rederivation | ** rederivation | ||
** Rydberg | ** Rydberg | ||
** dipoles/quadrupoles | ** dipoles/quadrupoles | ||
| − | * [https://github.com/AaronParsons/astro207/blob/main/ | + | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps03.pdf Problem Set 3] Assigned |
==== (Sep. 16) Einstein coefficients==== | ==== (Sep. 16) Einstein coefficients==== | ||
| Line 109: | Line 109: | ||
** [[Radiative Equilibrium]] | ** [[Radiative Equilibrium]] | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** estimating Einstein A for Ly-alpha | ** estimating Einstein A for Ly-alpha | ||
** effective photon absorption crosssection | ** effective photon absorption crosssection | ||
| Line 118: | Line 118: | ||
** [[Zeeman splitting]] | ** [[Zeeman splitting]] | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** what can you learn from a spectral line | ** what can you learn from a spectral line | ||
| − | * [https://github.com/AaronParsons/astro207/blob/main/ | + | * [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)==== | ==== (Sep. 23) radiation from accelerating charges (RL 3.3-3.4)==== | ||
| Line 128: | Line 128: | ||
** photoexcitation cross-section | ** photoexcitation cross-section | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** Einstein A for He+ | ** Einstein A for He+ | ||
| Line 143: | Line 143: | ||
** [[Rovibrational Transitions]] | ** [[Rovibrational Transitions]] | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** Cooling with CO | ** Cooling with CO | ||
| Line 152: | Line 152: | ||
** masers as transistors | ** masers as transistors | ||
** laser pointers | ** laser pointers | ||
| − | * [https://github.com/AaronParsons/astro207/blob/main/ | + | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps05.pdf Problem Set 5] assigned |
==== (Oct. 7) collisional excitations ==== | ==== (Oct. 7) collisional excitations ==== | ||
| Line 159: | Line 159: | ||
** [[Collisional Excitations]] | ** [[Collisional Excitations]] | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** more CO molecular clouds | ** more CO molecular clouds | ||
** collisional line-driven cooling | ** collisional line-driven cooling | ||
| Line 171: | Line 171: | ||
** free-free polarization | ** free-free polarization | ||
** simulating a free-free interaction | ** simulating a free-free interaction | ||
| − | * [https://github.com/AaronParsons/astro207/blob/main/ | + | * [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)==== | ==== (Oct. 14) charged cross-sections (RL 1.7-1.8; Mil 2.3-2.5)==== | ||
| Line 178: | Line 178: | ||
** [[Thomson Scattering]] | ** [[Thomson Scattering]] | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** electrons in the IGM | ** electrons in the IGM | ||
| Line 187: | Line 187: | ||
* Activities | * Activities | ||
** stromgren spheres | ** stromgren spheres | ||
| − | * [https://github.com/AaronParsons/astro207/blob/main/ | + | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps07.pdf Problem Set 7] assigned |
==== (Oct. 21) LTE and non-LTE ==== | ==== (Oct. 21) LTE and non-LTE ==== | ||
| Line 194: | Line 194: | ||
** [[Review of Equilibria]] | ** [[Review of Equilibria]] | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** estimating recombination coefficients | ** estimating recombination coefficients | ||
** work out in detail redshift of recombination | ** work out in detail redshift of recombination | ||
| Line 207: | Line 207: | ||
* Activities | * Activities | ||
** start de-dispersion coding | ** start de-dispersion coding | ||
| − | * [https://github.com/AaronParsons/astro207/blob/main/ | + | * [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] | ** [https://github.com/AaronParsons/astro207/blob/main/pulsar.dat pulsar.dat] | ||
| Line 217: | Line 217: | ||
** [[Compton Scattering]] | ** [[Compton Scattering]] | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** relativistic intuition, velocity raptor | ** relativistic intuition, velocity raptor | ||
** CMB coupling via compton | ** CMB coupling via compton | ||
| Line 236: | Line 236: | ||
** [[Synchrotron Polarization]] --> | ** [[Synchrotron Polarization]] --> | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** beaming, superluminal motion, monte carlo compton | ** beaming, superluminal motion, monte carlo compton | ||
| Line 248: | Line 248: | ||
** 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/ | + | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps09.pdf Problem Set 9] assigned |
==== (Nov. 11) No Class (Veterans day) ==== | ==== (Nov. 11) No Class (Veterans day) ==== | ||
| Line 258: | Line 258: | ||
** [[Compton Catastrophe]] --> | ** [[Compton Catastrophe]] --> | ||
* Activities | * Activities | ||
| − | ** [https://github.com/AaronParsons/astro207/blob/main/ | + | ** [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.ipyn datahub.berkeley.edu]) |
** reading SSC spectra, inferring castrophe | ** reading SSC spectra, inferring castrophe | ||
| Line 267: | Line 267: | ||
** [[Poynting-Robertson Effect]] | ** [[Poynting-Robertson Effect]] | ||
* Activities | * Activities | ||
| − | * [https://github.com/AaronParsons/astro207/blob/main/ | + | * [https://github.com/AaronParsons/astro207/blob/main/ps_2021/ps10.pdf Problem Set 10] assigned |
==== (Nov. 23) No Class ==== | ==== (Nov. 23) No Class ==== | ||
Revision as of 16:55, 25 August 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
http://github.com/AaronParsons/astro207
Syllabus
Useful External References
- 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
(Aug. 26) Radiative Quantities (RL 1.1-1.3; Mil 1.1-1.3)
- 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
- convert photon number density to specific intensity
(Aug. 31) radiative transport (RL 1.4; Mil 2.1-2.2)
- Topics
- Activities
- Activity Sheet 2
- Activity Sheet 2 solutions
- sliding pennies
- Problem Set 1 assigned
(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
- Activity Sheet 3
- 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)
- 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)
- Topics
- Activities
- Activity Sheet 5 (on datahub.berkeley.edu)
- flipping pennies, rolling dice
- types of temperature
(Sep. 14) semi-classical hydrogen
- Topics:
- Activities
- Activity Sheet 6 (on datahub.berkeley.edu)
- rederivation
- Rydberg
- dipoles/quadrupoles
- Problem Set 3 Assigned
(Sep. 16) Einstein coefficients
- Topics:
- Activities
- Activity Sheet 7 (on datahub.berkeley.edu)
- estimating Einstein A for Ly-alpha
- effective photon absorption crosssection
(Sep. 21) spectral line broadening
- 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)
- 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)
- Topics
- Activities
- CO Lecture
- No Problem Set this week
(Sep. 30) rovibrational transitions (RL 11)
- Topics
- Activities
- Activity Sheet 11 (on datahub.berkeley.edu)
- Cooling with CO
(Oct. 5) masers
- Topics
- Activities
- masers as transistors
- laser pointers
- Problem Set 5 assigned
(Oct. 7) collisional excitations
- Topics:
- Activities
- Activity Sheet 12 (on datahub.berkeley.edu)
- more CO molecular clouds
- collisional line-driven cooling
(Oct. 12) free-free emission
- 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)
- Topics:
- Activities
- Activity Sheet 13 (on datahub.berkeley.edu)
- electrons in the IGM
(Oct. 19) bound-free transitions
- Topics
- Activities
- stromgren spheres
- Problem Set 7 assigned
(Oct. 21) LTE and non-LTE
- Topics
- Activities
- Activity Sheet 14 (on datahub.berkeley.edu)
- estimating recombination coefficients
- work out in detail redshift of recombination
(Oct. 26) plasma effects
- 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
- 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
- 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
- Topics:
- Activities
- Activity Sheet 16 (on datahub.berkeley.edu)
- beaming, superluminal motion, monte carlo compton
(Nov. 9) Synchrotron Radiation
- Topics
- Activities
- re-deriving synchrotron spectrum
- phenomenological description of synchrotron decay
- Problem Set 9 assigned
(Nov. 11) No Class (Veterans day)
(Nov. 16) Synchrotron Self-Interactions
- Topics
- Activities
- Activity Sheet 17 (on datahub.berkeley.edu)
- reading SSC spectra, inferring castrophe
(Nov. 18) dust and grains
- Topics:
- Dust Absorption and Scattering
- dust formation/sublimation
- Poynting-Robertson Effect
- Activities
- Problem Set 10 assigned
(Nov. 23) No Class
(Nov. 25) No Class
(Dec. 1) radiative diffusion
- Topics:
- Radiative Diffusion
- bolometric radiative equilibrium
- greenhouse effect
- Activities
(Dec. 2) Review
- Review
Misc Topics
Legacy Lecture Notes
- 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
