file: rtsa-2006-07.txt = information RTSA (NS-AP426M) 2006-2007 last: Dec 14 2006 site: https://robrutten.nl/education/rjr-courses note: this file = information + course diary (at bottom of file) NS-AP426M = RTSA = AFYC = AFY2b "Radiative Transfer in Stellar Atmospheres" Advanced Astrophysics course (Masters program) 2006-2007 semester 1 block 2 credit 7.5 ects Osiris link: https://www.osiris.universiteitutrecht.nl/osistu_ospr/OnderwijsCatalogusKiesCursus.do?event=toonCursus&cursuscode=NS-AP426M&collegejaar=2006&aanvangsblok=2 Teacher: Rob Rutten, BBL 704, 2535226, R.J.Rutten at astro.uu.nl Assistant: Nikola Vitas CRG: Tim van Werkhoven, Sarka Jiraskova, Pedzi Girigori Schedule: Mon 13:15-17:00 BBL 768 lecture + presentation + problems Tue 09:15-12:45 MIN 032 practical (computer exercises) Thu 13:15-17:00 BBL 768 lecture + presentation + problems start: week 46 Mon Nov 13 end: week 4 Thu Jan 25 (or earlier) Language: English Exam: ?? no notes, book, laptop, phone; only calculator the exam defines the score Presentations: obligatory. Topics list in file afyc-talks.txt. Information: email list NS-AP426M (Osiris or majordomo subscribe) https://robrutten.nl/education/rjr-courses/iart-2007.txt Lecture notes: "Radiative Transfer in Stellar Atmospheres", for sale by Marion Wijburg, BBL704a @ 10 Euro. Books: no obligation, bibliography given in the lecture notes. Exercises: problems at the end of the lecture notes. Recommended. Practical: mandatory. Computer exercises, oral reporting. Prerequisites: course NS-AIST = NS-B252. It will be extensively summarized at the start of the course. Students who have not attended NS-AIST/NS-B252 will have to spend appreciable effort to correct this deficiency. A working knowledge of IDL is also necessary and must similarly be gained by extra effort if needed. Description: this course treats the theory of radiative transfer and stellar atmospheres needed to explain stellar spectra. Spectral lines are a key diagnostic of astronomy but their formation in opaque gaseous media is far from trivial. The course treats this topic at an advanced level, emphasizing non-LTE physics. The course is intended for future astrophysicists but future climatologists will also gain useful expertise. The second-year course "Introduction to astrophysical radiative transfer" is summarized at its start. An extensive, numerical exercise class employing the IDL language accompanies the course and is obligatory. Oral presentation of a landmark paper on the subject is also obligatory. Content: review of "Introduction to astropysical radiative transfer"; bound-bound and bound-free processes; analytical theory of radiative transfer in stellar atmospheres; numerical methods for non-LTE stellar line formation; theory of stellar atmospheres; stellar spectra; case studies in solar and stellar spectral line formation. Students Catherine Fischer P'edzi Girigori Sarka Jiraskova Theodora Karalidi Judith Palacios Virjanand Panday Georgios Petropoulos Gregal Vissers Tim van Werkhoven Tijmen van Wettum Reinier Zeldenrust Presentation schedule Mon Nov 20 - Thu Nov 23 - Mon Nov 27 - Catherine Fischer: Magnetic element inclinations (project) Thu Nov 30 - Judith Palacios: Facular limb darkening (project) Mon Dec 4 - Virjanand Panday: Frequency redistribution in scattering Thu Dec 7 - Tue Dec 12 - Pedzi Girigori: Forbidden transitions Thu Dec 14 - Tim van Werkhoven: Fraunhofer's discovery Mon Dec 18 - Thu Dec 21 - Gregal Vissers: Hmin = Mulders + Chandrasekhar cont papers Mon Jan 8 - Tijmen van Wettum: Hubeny refugee papers Thu Jan 11 - Theodora Karalidi: FeII laser in Eta Carinae Mon Jan 15 - Sarka Jiraskova: - Thu Jan 18 - Georgios Petropoulos: Schwarzschild on equilibria Mon Jan 22 - Reinier Zeldenrust: Mars sky Thu Jan 25 - Lecture schedule & diary ---------------------------------------------------------------------------- Mon Nov 13 = college 1, no werkcollege course overview increasing complexity: thin-thick; LTE-NLTE; CS-CRD-PRD; time-dependent radiation quantities: intensity, mean intensity, flux Tue Nov 14 = practical 1 Thu Nov 16 = lecture 2 + problems repeat radiation quantities emissivity, extinction, tau, S quick introduction RT equation + formal solution + homogeneous object bb, bf, ff processes; 5 Einstein coefficients hydrogen atom, H-minus bf and ff 2-level up-down pairs = photon creation/destruction versus scattering Mon Nov 20 = lecture 3 + problems repeat radiation quantities repeat radiation processes line extinction coefficient expressed in Einstein coefficients repeat simple RT thick RT > Eddington-Barbier Tue Nov 21 = practical 2 Thu Nov 23 = lecture 4 + problems radiative transfer rap: epsilon intro bb processes in scattering and creation/destruction pairs repeat thick RT > Eddington-Barbier 4-panel simple line in absorption and in emission solar UV spectrum change from absorption into emission Mon Nov 27 = lecture 5 + presentation + problems Chapter 2: equations 2.1 - 2.123 Catherine Fischer: Magnetic element inclinations (project) Tue Nov 28 = practical 3 Thu Nov 30 = lecture 6 + presentation + problems Bruls NaI formation plots + Avrett solar continuum Judith Palacios: Facular limb darkening (project) Mon Dec 4 = lecture 7 + presentation + problems rest Chapt 2, Chapt 3 sections 3.4 and 31.-3.2.3 Virjarand Panday: Frequency redistribution in scattering Tue Dec 5 = practical 4 Thu Dec 7 = lecture 8 + presentation + problems Chapt 4 start Mon Dec 11 = practical 5 (Cees Bassa PhD defense) Tue Dec 12 = lecture 9 + presentation + problems Chapt 4 until demo Eddington approximation Chapt 5 until ALI Pedzi Girigori: Forbidden transitions Thu Dec 14 = lecture 10 + presentation + problems Chapt 4 Eddington approximation demonstration Tim van Werkhoven: Fraunhofer's discovery Mon Dec 18 = lecture 11 + presentation + problems Chapt 4 rest Tue Dec 19 = practical 6 Thu Dec 21 = lecture 12 + Princetonplein Muziekfestijn Chapt 5 rest Gregal Vissers: Hmin = Mulders + Chandrasekhar continuum papers Mon Jan 8 = lecture 13 + presentation + problems Chapt 7 until numerical atmosphere modeling Tijmen van Wettum: Hubeny refugee papers Tue Jan 9 = practical 7 Thu Jan 11 = lecture 14 + presentation + problems empirical modeling options VALIIIC modeling and breakdown plots Theodora Karalidi: FeII laser in Eta Carinae Mon Jan 15 = lecture 15 + presentation + problems VALIIIC formation and radiative energy budget [Sarka Jiraskova: two-photon processes] canceled Tue Jan 16 Catherine Fischer: polarized line formation Thu Jan 18 = lecture 16 + presentation + problems all remaining diagrams (Auer-Mihalas, Vitense, Kurucz) Georgios Petropoulos: Schwarzschild on equilibria Mon Jan 22 = lecture 17 + presentation + problems course summary Nikola Vitas: Contribution and response functions Julius Koza: inversion using response functions Tue Jan 23 = Jorrit Leenaarts: numerical simulation Reinier Zeldenrust: Mars sky Mon Jan 29 = examination 14:00-17:00 BBL 160 no lecture notes, copy Rap OK, bring pencil + eraser