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Browsing Aryabhatta Research Institute of Observational Sciences by Author "Ovcharov, E."

Browsing Aryabhatta Research Institute of Observational Sciences by Author "Ovcharov, E."

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  • Intranight variability of 3C 454.3 during its 2010 November outburst 
    Bachev, R.; Semkov, E.; Strigachev, A.; Mihov, B.; Gupta, A. C.; Peneva, S.; Ovcharov, E.; Valcheva, A.; Lalova, A. (2011)
    Context. 3C 454.3 is a very active flat spectrum radio quasar (blazar) that has undergone a recent outburst in all observed bands,including the optical. Aims. In this work we explore the short-term optical variability of ...
  • Photometric study of the close eclipsing binary MM Dra 
    Bachev, R.; Semkov, E.; Kacharov, N.; Gupta, A. C.; Ovcharov, E.; Strigachev, A. (2011)
    We present new photometric data for an EW-type binary star – MM Dra. Light curve data in B and R colors for a total of 37 hours of observation have been analyzed. We obtained a new period of the binary – 0.26548 (0.00001) ...

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