These pages provide online material for the lecture that has to be moved to the
virtual space during the COVID-19 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 e-mail 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 post-COVID19 lessons in 2020:
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20.5.2020:
quick repeat of standard (Shakura-Sunyaev) disc solution
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20.5.2020:
quick repeat of slim discs; full lesson on S-diagram and thick discs
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3.6.2020:
brief pass though Compton scattering and basic model of magnetised neutron star.
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10.6.2020:
brief pass through spherical accretion and Bondi-Lyttleton accretion;
overview of active galactic nuclei
Video recordings taken from online lessons in 2021:
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3.3.2021:
radiation of charged particle (Lienard-Wiechert potentials, Larmor formula, back-reaction)
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10.3.2021:
thermal bremsstrahlung, Thompson scattering, Eddington limit, Lioville's theorem
(low resolution due to inconvenient window layout in Zoom)
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17.3.2021:
equation of radiative transfer, magnetic bremstrahlung, synchrotron radiation
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24.3.2021:
synchrotron radiation, (inverse) Compton scattering, Zel'dovich-Sunyaev effect
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31.3.2021:
basic model of pulsar
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7.4.2021:
spherical accretion, accretion onto a moving object (somewhat lower, but still acceptible
resolution due to inconvenient window layout in Zoom)
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14.4.2021:
disc-like accretion – standard α-disc model
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28.4.2021:
Shakura-Sunyaev soultion (radial profile, radiation spectrum); boundary layer
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5.5.2021:
Naviere-Stokes approximation; magneto-rotational instability (part I - mechanical analogy)
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12.5.2021:
magneto-rotational instability (part II - MHD solution); slim discs - basic equations
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19.5.2021:
slim discs - ADAF solution, S-diagram, viscous and thermal (in)stability; thick discs (part I)
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26.5.2021:
thick discs (part II); classification of disc-like solutions via radial component of Euler's equation;
overview of active galactic nuclei
Lecturer's hand notes: