R Band Photometry of X-Ray Selected BL Lacertae Objects: 1ES 0229+20, 1ES 0323+02, 1ES 0502+67, 1ES 0647+25, 1ES 0806+52, 1ES 0927+50, 1ES 1028+51, 1ES 1959+65 and 1ES 2344+51

Physics – Nuclear Physics

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Scientific paper

We present optical R band photometry for nine X-ray Einstein Slew Survey Sample BL Lacertae objects: 1ES 0323+022, 1ES 0502+675, 1ES 0647+250, 1ES 0806+524, 1ES 1028+511, 1ES 1959+650 and 1ES 2344+514. Two blazars 1ES 0229+200 and 1ES 0927+500 didn't show any detectable variability. They have all been observed with the ST-6 CCD camera attached to the Newtonian focus of the 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 was detected for all of the observed objects except two. The largest variation was observed for 1ES 0502+675 and equals to ΔR=1m.07.

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R Band Photometry of X-Ray Selected BL Lacertae Objects: 1ES 0229+20, 1ES 0323+02, 1ES 0502+67, 1ES 0647+25, 1ES 0806+52, 1ES 0927+50, 1ES 1028+51, 1ES 1959+65 and 1ES 2344+51 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

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