Physics
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010vaoa.conf..175h&link_type=abstract
"Evolution of Cosmic Objects through their Physical Activity, Proceedings of the Conference dedicated to Viktor Ambartsumian's 1
Physics
Scientific paper
The term "galactic activity" is inseparably linked with the name of Victor Ambartsumian. He was the first who paid attention to this topic. There are many manifestations of activity but photometric and polarization variability is probably the most prominent. Because of different time scales of variability the monitoring is an important method of investigation of active galactic nuclei. Optical monitoring of AGNs was started at the Observational Station of St.-Petersburg University in 60th of last century with two half-meter telescopes. With one of these photometric observations (mainly in B band) were done photographically, with the second the polarimetric observations were obtained with electrophotometer-polarimeter using photomultiplier. These observations were interrupted in 1991. After some years they were recommended in the fall of 90th with CCD photometer-polarimeter at 70-cm telescope of Crimean Observatory (BVRI bands) and with IR camera (JHK bands) with 1.1-m telescope placed in Campo Imperatore (Italy). Here some interesting results obtained using monitoring data will be presented.
Arkharov Arkadi A.
Hagen-Thorn E. I.
Hagen-Thorn Vladimir A.
Larionov Valeri M.
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