IAU Symp. 194 was devoted to V.A. Ambartsumian’s 90^th anniversary, who was the first astrophysicist who understood what a rich treasure was hidden under the activity phenomena in galaxies. In 50-s he began with his collaborators his systematic investigations in this field and obtained really very impressive results concerning various evidences of the activity in galaxies. In the last forty years a vast amount of observational data was accumulated. Moreover, nowadays collection of new data takes place with an increasing rate. And now when a great quantity of observational data on active phenomena is provided owing to new technology it was necessary to discuss the results more often. There was a need to display the main tendencies in physical explanations of the phenomena in question as well as in the observational possibilities. Ground-based new large telescopes and especially HST provided astronomers not only with a new amount of data but gave them qualitatively new type information which should be comprehended in connection with the established physical laws.

Scientific Organizing Committee (SOC): Halton Arp (Germany), Francesco Bertola (Italy), Alexander Boyarchuk (Russia), Geoffrey Burbidge (USA), Edward Khachikian (Co-Chair, Armenia), Daniel Kunth (France), Malcolm Longair (UK), Jayant Narlikar (India), Yervant Terzian (Co-Chair, USA), Virginia Trimble (USA), Daniel Weedman (USA), Lodewijk Woltjer (France), Anatoly Zasov (Russia).

Local Organizing Committee: Haik Harutyunian (Chair), Areg Mickaelian (Secretary).

Scientific Topics:

• The Phenomena of Activity
• Forms of Activity of Galaxies
• Activity of Galaxies in Optics
• Activity of Galaxies in Radio and IR
• Activity of Galaxies in X- and Gamma Rays
• Galaxies with UV-excess
• HST Mission on Activity of Galaxies
• Starburst Phenomenon in Active Galaxies
• The Activity of Normal Galaxies
• Activity Processes in our Galaxy
• Variability Phenomena in Active Galaxies
• Physical Nature of Activity Processes

100 scientists from 22 countries (USA, Japan, China, Mexico, Australia, UK, Germany, France, Italy, Netherlands, Belgium, Spain, Switzerland, Ireland, Bulgaria, Brazil, Egypt, Russia, Ukraine, Kazakhstan, Georgia, and Armenia) participated in the symposium, including 70 foreign (13 from former USSR), and 30 from Armenia. Among the participants, there were a number of distinguished scientists, such as Halton Arp, Kenneth Kellermann, Jack Sulentic, Daniel Weedman, David Sanders, Suzy Collin-Zahn, Malcolm Longair, Patrick Osmer, Vahe Petrosian, Yervant Terzian, Francesco Bertola, Felix Mirabel, Ian Robson, Philippe Veron, Gerard Lelievre, Thierry Courvoisier, Richard Lovelace, Alexei Fridman, Michael Dopita, and others.

Altogether 136 contributions were presented, including 27 invited reviews on the invitation of the SOC of the Symposium (by H. Arp (2), W. Baan, A. Boyarchuk, Georg Brutian, S. Collin-Zahn, T. Courvoisier, M. Dopita, A. Fridman, T. Kawaguchi, K. Kellermann, E. Khachikian, J. Krolik, M. Longair, R. Lovelace, F.D. Macchetto, F. Mirabel, P. Osmer, V. Petrosian, I. Robson (2), M. Romanova, R. Sambruna, D. Sanders, M. Turatto, Y. Terzian, and D. Weedman), 25 contributed oral talks, and 84 posters.

The IAU Symp. 194 in Byurakan was important from the point of view of putting together various multiwavelength data on AGN and their interpretation in view of the unified model. The experts discussed multiwavelength properties of different AGN and elaborated strategy for their further studies.

Proceedings: Active Galactic Nuclei and Related Phenomena, Eds. Ye. Terzian, D.W. Weedman, & E.Ye. Khachikian, International Astronomical Union (IAU), Vol. 194, ASP, San Francisco, 1999, 480 p. (in English).

Full List of Participants

ABAZAJIAN Kevork N., University of California, San Diego, CA, USA
ABRAHAMIAN Martin G., Yerevan State University (YSU), Armenia
ALEXANDER David M., Dept. of Physical Sci., Univ. of Hertfordshire, Hatfield, UK
ALI Gamal B., Astron. Dept., Natl. Res. Inst. of Astron. & Geophys., Cairo, Egypt
AMIRKHANIAN Artur S., Byurakan Astrophysical Observatory (BAO), Armenia
ANDREASIAN Ruben R., Byurakan Astrophysical Observatory (BAO), Armenia
ARP Halton C., Max-Planck-Institut fьr Astrofisik, Garching, Germany
ARSHAKIAN Tigran G., Cavendish Laboratory, Univ. of Cambridge, Cambridge, UK
ASATRIAN Norair S., Byurakan Astrophysical Observatory (BAO), Armenia
BAAN Willem A., NFRA - Westerbork Observatory, Dwingeloo, Netherlands
BALAYAN Smbat K., Byurakan Astrophysical Observatory (BAO), Armenia
BERGMAN Thaisa Storchi, Departamento de Astronomia, Instituto de Fisica, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
BERTOLA Francesco, Depatment of Astronomy, University of Padova, Italy
BEST Philip N., Sterrewacht Leiden, Huygens Lab., Netherlands
BOCHKAREV Nikolai G., Sternberg Astronomical Inst., Moscow State Univ., Moscow, Russia
BOYARCHUK Alexander A., Inst. of Astronomy, Russian Acad. of Sci. (INASAN), Moscow, Russia
BURENKOV Alexandr A., Special Astrophysical Observatory (SAO), Zelenchuk, Russia
BUSON Lucio Maria, Osservatorio di Capodimonte, Napoli, Italy
CAPPELLARI Michele, Dept. of Astronomy, University of Padova, Italy
CHATTERJEE Tapan Kumar, FCFM, Universidad Autonoma de Puebla, Mexico
CLAVEL Jean, Astrophys. Div., ISO project, European Space Agency (ESA), Madrid, Spain
COLLIN-ZAHN Suzy, Observatoire de Paris, Section de Meudon, France
COURVOISIER Thierry J.-L., INTEGRAL Science Data Centre, Geneva Obs., Versoix, Switzerland
CUNNIFFE John, Dunsink Observatory, Dublin, Ireland
DENISSYUK Eduard K., Astrophysical Institute, Kazakh Academy of Sci., Alma-Ata, Kazakhstan
DIETRICH Matthias, Landessternwarte Heidelberg, Heidelberg, Germany
DODONOV Serguei N., Special Astrophysical Observatory (SAO), Zelenchuk, Russia
DOPITA Michael Andrew, Mt. Stromlo & Siding Springs Observatory, Inst. of Advanced Studies, Australian Natl. Univ., Australia
EGIKIAN Anahit G., Byurakan Astrophysical Observatory (BAO), Armenia
FRIDMAN Alexei M., Inst. of Astronomy, Russian Acad. of Sci. (INASAN), Moscow, Russia
GRIGORYAN Levon S., Institute of Applied Problems in Physics, Yerevan, Armenia
GURZADYAN Vahagn G., Dept. of Theor. Physics, Yerevan Physics Inst., Yerevan, Armenia
GYULBUDAGHIAN Armen L., Byurakan Astrophysical Observatory (BAO), Armenia
GYULZADIAN Marietta V., Byurakan Astrophysical Observatory (BAO), Armenia
HAGEN-THORN Vladimir A., Astronomical Inst., St. Petersburg State University, Russia
HAKOPIAN Susanna A., Byurakan Astrophysical Observatory (BAO), Armenia
HARUTYUNIAN Haik A., Byurakan Astrophysical Observatory (BAO), Armenia
HIRST Paul, X-ray Astron. Group, Dept. Physics & Astron., University of Leicester, UK
HOVHANNISSIAN Martin A., Byurakan Astrophysical Observatory, Armenia
HUANG Keliang, Physics Dept., Nanjing Normal Univ., Nanjing, China
ISKUDARIAN Sofik G., Byurakan Astrophysical Observatory (BAO), Armenia
ISRAELIAN Garik L., Instituto de Astrofisica de Canarias (IAC), Tenerife, Canary Islands, Spain
KAISER Mary Elizabeth, Dept. of Physics and Astron., Johns Hopkins Univ., Baltimore, MD, USA
KALLOGHLIAN Arsen T., Byurakan Astrophysical Observatory (BAO), Armenia
KANDALYAN Rafik A., Byurakan Astrophysical Observatory (BAO), Armenia
KAWAGUCHI Toshihiro, Dept. of Astronomy, Kyoto University, Kyoto, Japan
KELLERMANN Kenneth I., National Radio Astronomy Observatory, Charlottesville, VA, USA
KHACHIKIAN Edward Ye., Byurakan Astrophysical Observatory (BAO), Armenia
KORATKAR Anuradha P., Space Telescope Science Institute, Baltimore, MD, USA
KOVALEV Yuri Yu., Astron. Space Center, P.N.Lebedev Physical Inst., Moscow, Russia
KROLIK Julian H., Dept. of Physics & Astron., Johns Hopkins Univ., Baltimore, MD, USA
LAURENT Olivier, Centre d’Etudes Nucleaires de Saclay, SAp, CE Saclay-Orme des Merisiers, Gif sur Yvette, France
LEEUW Lerothodi L., Joint Astron. Centre and Univ. of Central Lanchashire, Hilo, Hawaii, USA
LELIEVRE Gerard H., Observatoire de Paris DASGAL, France
LOMINADZE Jumber G., Abastumani Astrophys. Obs., Georgia
LONGAIR Malcolm S., Cavendish Laboratory, Univ. of Cambridge, UK
LOVELACE Richard V. E., Astronomy Dept., Cornell University, Ithaca, New York, USA
MACCHETTO Ferdinando Duccio, Science Programs Division, Space Telescope Sci. Inst., Baltimore, MD, USA
MAHTESSIAN Abraham P., Byurakan Astrophysical Observatory (BAO), Armenia
MALUMIAN Vigen H., Byurakan Astrophysical Observatory (BAO), Armenia
MATVEENKO Leonid, Space Research Institute, Russian Acad. of Sci., Moscow, Russia
MELIKIAN Norair D., Byurakan Astrophysical Observatory (BAO), Armenia
MICKAELIAN Areg M., Byurakan Astrophysical Observatory (BAO), Armenia
MIRABEL I. Felix, Service d'Astrophysique, Saclay, CE/Saclay-Orme des Merisiers, Gif sur Yvette, France
MOVSESSIAN Vardan H., Byurakan Astrophysical Observatory (BAO), Armenia
NAPIER William McDonald, Armagh Observatory, College Hill, Armagh, N. Ireland, UK
NAVASARDYAN Hripsime Kh., Byurakan Astrophysical Observatory (BAO), Armenia
NIKOGHOSSIAN Elena H., Byurakan Astrophysical Observatory (BAO), Armenia
NOTNI Peter, Astrophysikalisches Institut Potsdam, Germany
OHANIAN Gabriel A., Byurakan Astrophysical Observatory (BAO), Armenia
OKAZAKI Atsuo T., Faculty of Engineering, Hokkai-Gakuen Univ., Sapporo, Japan
OSMER Patrick Stewart, Department of Astronomy, Ohio State Univ., Columbus, OH, USA
OTTERBEIN Kai, Landessternwarte Heidelberg, Heidelberg, Germany
PANAJIAN Vazgen G., Byurakan Astrophysical Observatory (BAO), Armenia
PETROSIAN Artashes R., Byurakan Astrophysical Observatory (BAO), Armenia
PETROSIAN Vahй, Ctr. Sp. Sci & Astrophysics, Stanford Univ., Stanford, CA, USA
PETROV Georgy T., Institute of Astronomy, Bulgarian Acad. of Sci., Sofia, Bulgaria
PRONIK Iraida I., Crimean Astrophysical Obs., Ukrainian Acad. of Sci., Ukraine
ROBSON E. Ian, Joint Astronomy Center, Hawaii, Hilo, HI, USA
ROMANOVA Marina M., Astronomy Department, Cornell University, Ithaca, NY, USA
ROSCOE David, Univ. of Sheffield, Dept. of Applied Maths., Sheffield, UK
SADOYAN Avetis A., Department of Physics, Yerevan State University (YSU), Armenia
SAMBRUNA Rita M., Pennsylvania State Univ., Dept. of Astron. & Astrophys. PA, USA
SANDERS David B., Institute for Astronomy, University of Hawaii, Honolulu, HI, USA
SINANIAN Armen A., Byurakan Astrophysical Observatory (BAO), Armenia
SMITH Harding Eugene, Center for Astrophysics, Univ of California, San Diego, CA, USA
STEPANIAN Jivan A., Special Astrophysical Observatory (SAO), Zelenchuk, Russia
SULENTIC Jack W., Dept. of Physics and Astronomy, Univ. of Alabama, Tuscaloosa, AL, USA
TERZIAN Yervant, Department of Astronomy, Cornell University, Ithaca, NY, USA
TRAN Hien D., Inst. of Geophys. and Planetary Physics, LLNL, Livermore, CA, USA
TREVESE Dario, Inst. Astronomico - Univ. di Roma "La Sapienza", Roma, Italy
TURATTO Massimo, Osservatorio Astronomico di Padova, Italy
VARDANYAN Rafik A., Byurakan Astrophysical Observatory (BAO), Armenia
VARDAPETIAN Ruben, INTAS, Brussels, Belgium
VERON Philippe, Observatoire de Haute Provence, Saint-Michel l'Observatoire, France
VERON Marie-Paule, Observatoire de Haute Provence, Saint-Michel l'Observatoire, France
WEEDMAN Daniel W., Pennsylviania St. Univ., Dept of Astron. & Astrophys., PA, USA
XANTHOPOULOS Emily, NRAL Jodrell Bank, Macclesfield, Cheshire, UK
ZAHN Jean-Paul, Observatoire de Paris, Section de Meudon, DASGAL, France
ZASOV Anatoly V., Sternberg Astronomical Inst., Moscow State Univ., Russia