These pages provide online material for the lecture that has to be moved to the
virtual space during the COVID19 crisis in 2020. It does not stand as a full replacement
of the course. Students are supposed to go through the supplied materials and ask questions
via email during the period of closed
lecture rooms.
Literature:
Karas V.: "Astrophysical Analogies – from Quasars to Pulsars",
1996, lecture notes available online
Fank J., King A., Raine D. J.: "Accretion Power in Astrophysics",
2002, Cambridge, UK: Cambridge University Press
Padmanabhan T.: "Theoretical astrophysics. Vol.1: Astrophysical processes",
2000, Cambridge, MA: Cambridge University Press
Shields G. A.: "A Brief History of Active Galactic Nuclei",
1999, PASP, 111, 661
Video recordings taken from postCOVID19 lessons in 2020:

20.5.2020:
quick repeat of standard (ShakuraSunyaev) disc solution

20.5.2020:
quick repeat of slim discs; full lesson on Sdiagram and thick discs

3.6.2020:
brief pass though Compton scattering and basic model of magnetised neutron star.

10.6.2020:
brief pass through spherical accretion and BondiLyttleton accretion;
overview of active galactic nuclei
Video recordings taken from online lessons in 2021:

3.3.2021:
radiation of charged particle (LienardWiechert potentials, Larmor formula, backreaction)

10.3.2021:
thermal bremsstrahlung, Thompson scattering, Eddington limit, Lioville's theorem
(low resolution due to inconvenient window layout in Zoom)

17.3.2021:
equation of radiative transfer, magnetic bremstrahlung, synchrotron radiation

24.3.2021:
synchrotron radiation, (inverse) Compton scattering, Zel'dovichSunyaev effect

31.3.2021:
basic model of pulsar

7.4.2021:
spherical accretion, accretion onto a moving object (somewhat lower, but still acceptible
resolution due to inconvenient window layout in Zoom)

14.4.2021:
disclike accretion – standard αdisc model

28.4.2021:
ShakuraSunyaev soultion (radial profile, radiation spectrum); boundary layer

5.5.2021:
NaviereStokes approximation; magnetorotational instability (part I  mechanical analogy)

12.5.2021:
magnetorotational instability (part II  MHD solution); slim discs  basic equations

19.5.2021:
slim discs  ADAF solution, Sdiagram, viscous and thermal (in)stability; thick discs (part I)

26.5.2021:
thick discs (part II); classification of disclike solutions via radial component of Euler's equation;
overview of active galactic nuclei
Lecturer's hand notes: