APO1 - X-Ray Spectroscopy of High Energy Sources with the XMM-Newton Satellite |
Speaker_ |
Kurtanidze, Omar |
Co-autors |
M.G. Nikolashvili and B.Z. Kapanadze |
Talk _ |
Optical variability of X-ray selected Blazars |
Abstract _ |
We present optical R band photometry for nine X-ray selected Einstein Slew Survey Sample BL Lacertae objects: 1ES 0229+200, 1ES 0323+022, 1ES 0502+675, 1ES 0647+250, 1ES 0806+524, 1ES 0927+500, 1ES 1028+511, 1ES 1959+650 and 1ES 2344+514. Observations have been conducted using ST-6 ccd camera attached to Newtonian focus of 70-cm meniscus telescope. These data provide optical information on sources that have been rarely observed in the optical band. Variability on long time scales within one magnitude in R band are detected for all of the observed objects except 1ES 0229+200 and 1ES 0927+500. Largest variation was observed for 1ES 0502+675 and equals to one magnitude in R band. |