发稿时间:2019-03-29浏览次数:281

USTC Astronomy Seminar Series: 2019 Spring
Changing Look AGNs: Monitoring Project and First Results
Victor Oknyansky  Research Associate
Moscow State University
2019/03/29, 4:00pm , the 19th-floor Observatory Hall
Changing Look AGNs (CL AGNs) are objects which undergo dramatic variability of the emission line profiles and classification type which can move from one spectral class to another within very short time interval (from days to years). We started a project to use various telescopes worldwide to carry out spectral and photometric multiwavelength (from IR to X-ray) monitoring of a sample of CL AGNs. The telescopes we have been using include the 2.5-m, 1.25-m, 0.6-m, 0.5-m, 0.4-m (MASTER) telescopes of SAI MSU, SHAO 2-m and 0.6-m, SALT 11- m, SAAO 1.9-m, WIRO 2.3-m, the 1.0-m at Weihai Observatory of Shandong University, Swift XRT, and UVOT. In this talk, I will introduce the project and present some recent results for NGC2617 and NGC1566.
 Victor Oknyansky graduated from Odessa State University in 1976 (a bachelor of astronomy). He completed his diploma practice at the Crimean Observatory. V. Lyuty was his supervisor on the thesis “Study of cyclic phenomena in the variability of active galaxies and quasars”, which he defended in 1986 (SAI MSU). From 1998 to 1990, he worked as a senior researcher in the Special Astrophysical Observatory as a visitor. After moving to Moscow in 1991, he started to work at the SAI MSU, where he currently works as a senior research associate. His main research interests are related to studies of the variability of AGN, quasars, and gravitational lenses.