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Course, academic year 2023/2024
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Elementary Processes in Cosmic Physics - NAST024
Title: Elementární procesy v kosmické fyzice
Guaranteed by: Astronomical Institute of Charles University (32-AUUK)
Faculty: Faculty of Mathematics and Physics
Actual: from 2020
Semester: summer
E-Credits: 4
Hours per week, examination: summer s.:3/0, Ex [HT]
Capacity: unlimited
Min. number of students: unlimited
4EU+: no
Virtual mobility / capacity: no
State of the course: taught
Language: Czech
Teaching methods: full-time
Teaching methods: full-time
Guarantor: doc. RNDr. Ladislav Šubr, Ph.D.
Classification: Physics > Astronomy and Astrophysics
Annotation -
Last update: T_AUUK (24.05.2001)
The most significant processes in particle astrophysics, synchrotron radiation, Compton scattering. The motion and radiation of charged particles under cosmic conditions. Process of accretion.
Course completion requirements -
Last update: doc. RNDr. Ladislav Šubr, Ph.D. (13.06.2019)

Oral exam

Literature -
Last update: T_AUUK (24.03.2015)

T. Padmanabhan, Theoretical Astrophysics, Cambridge University Press,

Cambridge, 2002

Teaching methods - Czech
Last update: T_AUUK (31.03.2008)

Přednáška.

Requirements to the exam - Czech
Last update: doc. RNDr. Ladislav Šubr, Ph.D. (10.10.2017)

Zkouška má ústní formu (student dostává po zadání dvou otázek přibližně jednu hodinu na přípravu). Požadavky ke zkoušce odpovídají sylabu předmětu v rozsahu, který byl prezentován na přednášce.

Syllabus -
Last update: T_AUUK (24.03.2015)

Cosmic electrodynamics.

Radiation of an accelerated charged particle; bremsstrahlung; opacity for

Thompson scattering and free-free absorption; Liouville's theorem and its

implication for conservation of intensity along the light ray; raditive

transfer equation; synchrotron radiation; Compton scattering and inverse

Compton scattering; Sunyaev-Zel'dovich effect

Basic model of pulsar - aligned rotator

Accretion process.

Particles and fluid in astrophysics - basic (hydro)dynamical equations;

spherical steady-state accretion; star moving through a nebula - Bondi

accretion; disc accretion, viscosity, boundary layer, spectrum; accretion on

black holes; high accretion - accretion torus, hydrodynamics of rotating

fluids; other models of accretion discs - vertically integrated (slim) discs;

S-diagram; conditions for thermal and viscous stability.

Active galactic nuclei.

Elementary observational facts about quasars and related objects; standard

model of active gelectic nuclei; continuum and spectral lines, cheracteristic

time and length scales.

 
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