Transcript Physical and Kinematical Properties in Central Part of Active

Activity of the Group for
Astrophysical Spectroscopy GAS
Luka Č. Popović
Astronomical Observatory, Belgrade, Serbia
Four projects financed by Ministry of
education and science
Pr176001 – Astrophyscal spectroscopy of extragalactic Objects
• Edi Bon (PhD 2010)
• Miodrag Dacic (until 2011, in pension)
• Milan Dimitrijevic (until 2011, now involved in interdisciplinar
project, leaded by D. Jevremovic)
• Natasa Gavrilovic-Bon (PhD in 2011)
• Dragana Ilic
• Predrag Jovanovic
• Andjelka Kovacevic
• Jelena Kovacevic (PhD in 2011)
• Luka Popovic
• Sasa Simic
• Marko Stalevski (PhD student)
Pr176001 – Astrophyscal spectroscopy of extragalactic
Objects – Participants from another institutions
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Evangelia Lyratzy (Greece)
Evencio Mediavilla (Spain)
Alla I. Shapovalova (Russia)
Three EM students working on subjects
from the project
• Payaswini, Nemanja and Luca
Some conferences – 8 SCSLSA
Last two years (2010 to 2012) we published 41 papers, 14 in
the journals from ISI list
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8 SCSLSA in June 2011, Proceedings in Baltic Astronomy, Vol. 20 (Eds. L.
C. Popovic, D. Ilic and D. Jevremovic)
Workshop on Supermassive Black Hole Binaries – Proc. New Astronomy
Reviews, Volume 56, Issue 2 (Ed L. C. Popovic)
SPIG 2010 Proc. in Journal of Physics: Conference Series, Volume 257, Issue
1 (Eds. L. C. Popovic and M. Kuraica)
Three PhD thesis, Edi, Natasha and Jelena
Participation in two COST actions: MP0905 Black Holes in a Violent
Unvierse (MC L. Popovic and P. Jovanovic) and MP 1104 Polarization in
Astronomy (MC D. Ilic and L. Popovic)
Participation in EM master studies in Astrophysics – Astromundus (D. Ilic, L.
Popovic)
Subjects
• Active Galactic Nuclei
• Gravitational Lensis
• Gamma Ray Bursts
АGN
AGN Part
• Central Part (monitoring program with A.I. Shapovalova –
Russia, V. Chavushian – Mexico and W. Kollatschny –
Germany) and SDSS spectra. Work of Payaswini and
Nemanja
• Physics of the BLR (P. Rafanelli and G. La Mura – Italy)
• Broad Absorption Lines in AGN (E. Danezis and V.
Lyratzi – Greece)
• Polarization in the BLR (here to talk with V. Afanasiev Russia)
• AGN Torus (part of M. Stalevski PhD, M. Baes –
Belgium)
• Stellar populations in AGNs (Natasha Gavrilovic-Bon,
collaboration with Lyon Observatory – France)
Disk emission in the optical broad lines –
geometry of the BLR – e.g. 3C390.3
• Eracleous & Halpern
1994, 2003, ApJ
• Shapovalova, Popovic,
Burenkov et al. 2010,
A&A
• Popovic, Shapovalova,
Ilic et al. 2011, A&A
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Double peaked lines
Very broad
Radio loud AGN
Variability in line
intensities and line shapes
(Shapovalova, Popovic et
al. 2010, Popovic et al.
2011)
• Very small fraction, 3-5%,
of BLAGN
Gravitational lensing
• Obs. 6m telescope
SAO (A. Moeseev)
Theoretical part
E. Mediavilla – Spain
Stalevski et al. 2012,
Sent to MNRAS
Lensing of the torus
Gamma ray bursts
• Modified Shock
wave model
(Simic & Popovic
2012, IJMPD)
Luca is working on
multi-peaked GRB
light curves
Mergers of galaxies & AGNs
(see Popovic 2012, NewAR, review paper)
Hierarchical galaxy formation in
CDM cosmology (Credit: MPA)
Begelman, Blandford, Rees, 1980, Nat
binary AGNs ~
1.4 kpc
(Komossa et al., 2003)
SMBHBs at Sgr A*? (Hansen
& Milosavljevic 2003)
IMBHs in
global clusters?
NGC4472 (Maccorane
et al, 2007, Nat)
Some interesting profiles
We are here to discuss
• E.g. Spectral line
polarization and
binary black holes
• UV & Optical
spectra AGN
• Variabilty of
AGNs, monitoring
projects
• GRBs and high
energy emission of
AGNs
• The structure and
physics of the BLR
• Etc.