Datum od | 23.03.2023 / 13:00 |
Datum do | 23.03.2023 / 14:00 |
Celodenní | Ne |
Pro studenty | Ano |
Pro veřejnost | Ano |
Jen pro zvané | Ne |
Abstract:
The influence of magnetic field on the existence of two-phase medium in
the transition layer between disk and corona in AGN is discussed. We
solve the vertical structure of the disk driven by MRI together with
radiative transfer in hydrostatic and radiative equilibrium, which
allows us to point out how TI affects the corona for a wide range of
global parameters. We show that magnetic heating is strong enough to
heat upper layers of the accretion disk atmosphere, which form the warm
corona covering the disk. Magnetic pressure does not remove TI caused by
radiative processes operating in X-ray emitting plasma. TI stays a kind
of "frozen" by magnetic field and plays the major role in the formation
of the warm corona above magnetically driven accretion disk in AGN. The
warm, Compton cooled corona, responsible for soft X-ray excess,
resulting from our model has typical temperature in the range of 0.01 - 2
keV and optical depth even up to 50, which agrees with recent
observations.
Should you have any questions about the event itself, do not hesitate to reach out to us on this following e-mail address: debora.lancova@physics.slu.cz.
We are looking forward to your participation.Fyzikální ústav bude ve spolupráci s Astronomickou společností pořádat již tradiční akci Astronomická olympiáda, tentokrát pro kategorii CD.
Fyzikální ústav zve všechny zájemce z řad veřejnosti na pozorování oblohy, organizované observatoří WHOO!. Akce se bude konat na pozorovací terase ve…