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Activity of the Group for Astrophysical Spectroscopy - GAS Luka Č. Popović Astronomical Observatory, Belgrade, Serbia.

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Presentation on theme: "Activity of the Group for Astrophysical Spectroscopy - GAS Luka Č. Popović Astronomical Observatory, Belgrade, Serbia."— Presentation transcript:

1 Activity of the Group for Astrophysical Spectroscopy - GAS Luka Č. Popović Astronomical Observatory, Belgrade, Serbia

2 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)

3 Pr176001 – Astrophyscal spectroscopy of extragalactic Objects – Participants from another institutions Evangelia Lyratzy (Greece) Evencio Mediavilla (Spain) Alla I. Shapovalova (Russia) Three EM students working on subjects from the project Payaswini, Nemanja and Luca

4 Some conferences – 8 SCSLSA

5 Last two years (2010 to 2012) we published 41 papers, 14 in the journals from ISI list 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)

6 Subjects Active Galactic Nuclei Gravitational Lensis Gamma Ray Bursts

7 АGN

8 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)

9 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 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

10 Gravitational lensing Obs. 6m telescope SAO (A. Moeseev) Theoretical part E. Mediavilla – Spain Stalevski et al. 2012, Sent to MNRAS Lensing of the torus

11 Gamma ray bursts Modified Shock wave model (Simic & Popovic 2012, IJMPD) Luca is working on multi-peaked GRB light curves

12 Hierarchical galaxy formation in  CDM cosmology (Credit: MPA) Mergers of galaxies & AGNs (see Popovic 2012, NewAR, review paper) binary AGNs ~ 1.4 kpc (Komossa et al., 2003) IMBHs in global clusters? NGC4472 (Maccorane et al, 2007, Nat) SMBHBs at Sgr A*? (Hansen & Milosavljevic 2003) Begelman, Blandford, Rees, 1980, Nat

13 Some interesting profiles

14 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.


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