[phys4phys] Naučno-stručni skup AOB - četvrtak 5.6.2025. u 12h

[Natasa Bon]

Poštovane kolege,


Pozivam vas na Naučno-stručni skup koji će se održati u biblioteci AOB u 
četvrtak 5.6. u 12h.

Ovoga puta ćemo imati dva gosta, tako da će prvo predavanje početi u 
12h, a drugo oko 13h.

U nastavku su detaljnije informacije.


Predavač 1: dr Paola Marziani, INAF Osservatorio Astronomico di Padova, 
Italy

Naslov predavanja: "The Main Sequence of Quasars and Its Implications in 
Cosmology”

Kratak apstrakt:
The observed systematicity among key quasar spectral properties defines 
a main sequence that offers insight into accretion physics and helps 
unify the diverse phenomenology of type-1 active galactic nuclei (AGN). 
This seminar summarizes recent advances in AGN research and explores the 
observational and theoretical foundations of the quasar main sequence, 
with emphasis on its dependence on physical parameters such as the 
Eddington ratio. The framework is shown to connect different classes of 
type-1 AGN and to deepen our understanding of accretion processes onto 
supermassive black holes. Finally, the implications for cosmology are 
considered, including the potential use of quasars as standardizable 
distance indicators across cosmic time.

Predavač 2: Swayamtrupta Panda, Laboratório Nacional de Astrofísica – 
MCTI, Brasil


Naslov predavanja: “Getting stronger with time - the many faces of the 
Quasar Main Sequence”

Kratak apstrakt:
Black hole mass determination in active galaxies remains among the 
fundamental questions in astrophysics - coupled with the information of 
the luminosity output, one can infer the accretion power and reveal the 
inner workings of these cosmic objects. I will discuss three novel BH 
mass scaling relations inferred from three different regions around the 
central supermassive black hole, starting from the further out narrow 
line region, to the broad line region, and eventually to the accretion 
disk. I will highlight some interesting science cases with the AGN 
spectra and variability, including Changing-Look AGNs. In the second 
part of my talk, I will introduce you to the spectro-imaging facilities 
we have at NOIRLab, especially the current and future instruments in the 
Gemini Observatory, and how you can request time through partners and 
the open sky program.


Predavanje možete pratiti i online putem ZOOM-a:

https://zoom.us/j/98500635276?pwd=3bsttH8IidisrQjPDVk2dCeHiHahtv.1

Meeting ID: 985 0063 5276

Passcode: 614061


Srdačan pozdrav,

Nataša




-- 
dr Natasa Gavrilovic Bon
Associate Research Professor
web site: http://nbon.aob.rs/
Astronomical Observatory Belgrade
Volgina 7
11160 Belgrade, Serbia
Tel:+381 11 3089 068
Fax:2419 553