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RADIO VARIABLE SOURCES WITH THE RT32 RADIO TELESCOPE
M. Harinov1 , S.A. Trushkin2 , A. Mikhailov
1

Institute of Applied Astronomy of RAS, SAO RAS, Saint-Petersburg, Sp ecial astrophysical observatory of RAS, Nizhnij Arkhyz, Russia kharma78@rambler.ru We discussed first results of radio observations of AGNs and micro quasars with the RT32 radio telescop e (Zelenchuk) during 2004-2006. We carried out more than 20 sets of observations of the micro quasars: SS433, Cyg X-3 and LSI+61d303 at frequencies 2.3 and 8.45 GHz. Usually during 1-3 days these sources were observed in a multi-scanning mo de, when the antenna elevation or the antenna azimuth were changed following a cosmic source. Thus, for 3-5 daily observations with a duration of 30-60 minutes we integrated up to 100 single scans, which could b e used to study a fast intra-day variability. The flux sensitivity of ab out 10-20 mJy was reached at b oth frequencies. From Novemb er 2004 to August 2006 in twelve two-day sets of observations the sample of 50 bright variable extragalactic sources from 3 and WMAP catalogs and from the sources list selected for the Russian-Finnish program of AGNs was studied. It is imp ortant for such programs that from March 2005 the RT32 observations were regularly carried out simultaneously at b oth frequencies 2.3 and 8.5 GHz in two circular p olarizations. A go o d agreement of the RATAN and RT32 flux measurements of micro quasars and AGNs was obtained. Acknow ledgements. The authors are thankful to the RFBR and Presidium of RAS for supp ort by grants. S.T. is very thankful to the IAA Program Commitee for regular allo cation of the RT32 observation time. References Trushkin S.A., Harinov M.A., Michailov A.G.: 2005, ATel, N488, 1 Trushkin S.A., Po oley G., Harinov M.A., Mikhailov A.G.: 2006, ATel, 828, 1 Trushkin S.A., Bursov N.N., Valtao ja E., Nizhelskij N.A., Tornikoski M., Mikhailov A.G. Harinov M.: HEA-2006, Abstract b o ok, Moscow, Dec 24-28 2006.