O'zbekistonda blazarlarni kuzatish

Aktiv yadroli galaktikalar (AGN) Beginning with the highly luminous quasars Decreasing in violence through the radio and Seyfert galaxies and ending with normal spirals and ellipticals The central black holes that powered the early activity are still there at later times; they simply run out of fuel as time goes on Nemis astronomi Cuno Hoffmeister (1892-1968) tomonidan 1929 yilda kaltakesak (Laserta) yulduz turkumida o'zgaruvchan yulduz sifatida kashf etilgan. 1968 yilda John Schmitt tomonidan Kanadadagi David Dunlap observatoriyasida yana bir o'zgaruvchan yulduz BL Lacertae (VRO 42.22.01) ni kashf etdi. 1974 yilda Oke va Gunn BL Lacertae obyektining qizilga siljishi z = 0.07, ekanligini va bu obyekt 21,00 kms tezlik bilan Somon Yo'li galaktikasidan uzoqlashyotganini aniqladi Blazar nomi 1978 yilda astronom Ed Spiegel tomonidan fanga kiritilgan. Up to now, 24 campaigns have been carried out, usually in conjunction with observations at high energies. The WEBT was born in 1997, in the CGRO era, as an international consortium of astronomers devoted to blazar studies. Mostly optical, but also radio and near-IR observatories More than 100 optical telescopes, 3 NIR, 8 radio, and the Sub-millimeter Array provided the WEBT with more than 50,00 observations in 20 bands. http:ww.oato.inaf.itblazarswebt The distribution in longitude allows 24 hday continuous monitoring WEBT campaigns: one (source) at a time WEBT President (from 200: Massimo Villata, OATo) Observing proposal (anybody) WEBT officers Campaign (from a few days to several monthsyears) The Campaign Manager takes care of campaign coordination, publication of results, and sends data to the WEBT archive Kuzatuvlar Maydanak observatoriyasidagi ko'zgusining diametri 60 sm bo'lgan Tseys 600 teleskopida AQSHning Finger Lakes Instrumentation (FLI) kompaniyasi tomonidan ishlab chiqarilgan FLI ProLine PL4710 kamerasi yordamida olib borildi. C. M. Raiteri, M. Villata, …, D. O. Mirzaqulov, Sh. A. Ehgamberdiev, et al. (42 authours) Variability of the blazar 4C 38.41 (B3 1633+382) from GHz frequencies to GeV energies Astronomy Astrophysics, 2012 Volume 545, id. A48, 18 pp ...