Browsing by Author "Semkov, E"

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Multiwavelength intraday variability of the BL Lacertae S5 0716+714

Gupta, A. C; Krichbaum, T. P; Wiita, P. J; Rani, B; Sokolovsky, K. V; Mohan, Prashanth; Mangalam, A; Marchili, N; Fuhrmann, L; Agudo, I; Bach, U; Bachev, R; Böttcher, M; Gabanyi, K. E; Gaur, H; Hawkins, K; Kimeridze, G. N; Kurtanidze, O. M; Kurtanidze, S. O; Lee, C.-U; Liu, X; McBreen, B; Nesci, R; Nestoras, G; Nikolashvili, M. G; Ohlert, J. M; Palma, N; Peneva, S; Pursimo, T; Semkov, E; Strigachev, A; Webb, J. R; Wiesemeyer, H; Zensus, J. A (Wiley-Blackwell, 2012-09)

We report results from a one-week multiwavelength campaign to monitor the BL Lacertae object (BL Lac) S5 0716+714 (on 2009 December 9–16). Nine ground-based telescopes at widely separated longitudes and one space-based ...
A peculiar multiwavelength flare in the blazar 3C 454.3

Gupta, A. C; Mangalam, A; Wiita, J. Paul; Kushwaha, P; Gaur, H; Zhang, H; Gu, M. F; Liao, M; Dewangan, G. C; Ho, L. C; Mohan, P; Umeura, M; Sasada, M; Volvach, A. E; Agarwal, A; Aller, M. F; Aller, H. D; Bachev, R; Lahteenmaki, A; Semkov, E; Strigachev, A; Tornikoski, M; Volvach, L. N (Oxford University Press on behalf of the Royal Astronomical Society, 2017-11)

The blazar 3C 454.3 exhibited a strong flare seen in γ -rays, X-rays and optical/near-infrared bands during 2009 December 3–12. Emission in the V and J bands rose more gradually than did the γ -rays and soft X-rays, ...

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