Research Interests 

 

1. •Wide-Field surveys (AGNs, Galaxies, CV, White dwarfs and hot subdworfs)
   

2. •Active Galactic Nuclei and Quasars  (Central Engine and Environment)
   

3. •Compact Groups of Galaxies
   

4. •Observational Astronomy
   
   

My main area of study is the multiwavelength observations and interpretation of the processes going on around supermassive black holes (BH): the nature of the power source in active galactic nuclei (AGNs); the cosmological evolution of supermassive BH and their host galaxies, and relationships with environment in small and large scales. One of my long-term interests has been variability of the radiation from AGNs to probe what is going on around the supermassive BH (structure and kinematics of the broad/narrow-line emission regions) and power generation.

Education

1. •1995 Ph.D. (Physics & Mathematics, Specialisation - Astronomy & Radioastronomy) Special Astrophysical Observatory, Russian Academy of Sciences, Russia. Thesis: "Quasistellar objects of the Second Byurakan sky Survey."  Advisor: Dr. J.A. Stepanian
   

2. •1986 M.Sc. (Physics, Specialisation - Astrophysics) Yerevan State University, Department of Astrophysics, Armenia. Thesis: "Spectral and photometrical investigation of the dwarf irregular galaxies Markarian 773 and Markarian 1006" Advisors: Prof. E.Y. Khachikian and Dr. A.R. Petrossian
   

3. •1984  B.Sc. (Physics) Yerevan State University, Faculty of Physics, Armenia
   

Recent publications

Submitted papers

Parisi, P.; Masetti, N.; Jiménez-Bailón, E.; Chavushyan, V.; Landi, R.; Malizia, A.; Palazzi, E.; Bassani, L.; Bazzano, A.; Bird, A. J.; and 5 coutors, A&A. Accurate classification of 28 objects detected in the 39 months Palermo Swift/BAT hard X-ray catalogue.

Benitez, E.; Mendez-Abreu, J.; Fuentes-Carrera, I.; Cruz-Gonzalez, I.; Martinez, B.;  Lopez-Martin, L.; Jimenez-Bailon, E.; Chavushyan, V., ApJ.  Characterization of a sample of Intermediate-Type AGN. I. Host-Bulge Properties and Black-Hole mass estimates.

Koulouridis, E.; Plionis, M.; Chavushyan, V.; Dultzin, D.; Krongold,  Y.; Georgantopoulos, I.; Leon-Tavares, J., MNRAS. The Activity of the Neighbours of AGN and Starburst Galaxies: Towards an evolutionary sequence of AGN activity.

Mezcua, M.; Chavushyan, V.H.; Lobanov, A.P.; Leon-Tavares, J., A&A. Merger signature in X-shaped radio galaxies.

Published Refereed papers

Torrealba, J.; Chavushyan, V.; Cruz-González, I.; Arshakian, T.G.; Bertone, E.; Rosa-González, D., 2012, RevMexAA, 48, 9. Optical Spectroscopic ATLAS of the MOJAVE/2cm AGN Sample

Jimenez-Bailon, E.; Chavushyan, V.; Schartel, N.; Santos-Lleo, M.; Huerta, E. M.; Krongold, Y., 2011, AJ, 143, 64. The Nature of Hard X-ray Extragalactic Sources observed with XMM-Newton.

Masetti, N.; Perisi, P.; Jimenez-Bailon, E.; Palazzi, E.; Chavushyan, V.; Bassani, L.; Bazzano, A.; Bird, A.J.; Dean, A.J.; Galaz, G.; Landi, R.; Malizia, A.; Minniti, D.; Morelli, L.; Schiavone, F.; Stephen, J.B.; Ubertini, P, 2012, A&A, 538, 123. Unveiling the nature of INTEGRAL objects through optical spectroscopy IX. 22 more identifications, and a glance into the far hard X–ray Universe.

Arshakian, T.G.; Leon-Tavares, J.; Botcher, M.; Torrealba, J.; Chavushyan, V.; Lister, M.L.; Ros. E.; Zensus, J.A., 2012, A&A, 537, 32. Radio-Optical-Gamma-Ray properties of MOJAVE AGN detected by Fermi/LAT.

Conference Proceedings

Chavushyan, V.; Erastova, L.; Tovmassian, G.; Torrealba, J.;  Valdez, J.R. 2012, Baltic Astronomy, 21, 211. A new Symbiotic Star (SBS 0802+529) from the Second Byurakan Survey. In Asiago Meeting on Symbiotic Stars.

Shcherbakov, Alexandre S.; Hanessian de La Garza, Ana V.; Chavushyan, Vahram; Campos Acosta, Joaquin, 2012, SPIE, 8240, 36. Arrangement of an advanced acousto-optical processor for modeling the triple correlations of low-power optical pulse trains. In Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI.

Shcherbakov, Alexandre S.; Hanessian de La Garza, Ana V.; Chavushyan, Vahram; Nemov, Sergey A., 2012, SPIE, 8240, 39.  A multi-phonon light-scattering and resolution of acousto-optic devices. In Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI.