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Title: | Prominent activity of the blazar OJ 287 in 2005. XMM-Newton and multiwavelength observations | Authors: | Ciprini, S. RAITERI, Claudia Maria Rizzi, N. Agudo, I. FOSCHINI, LUIGI Fiorucci, M. Takalo, L. O. VILLATA, Massimo Ostorero, L. Sillanpää, A. Valtonen, M. Tosti, G. Wagner, S. J. Aller, H. Aller, M. F. Arai, A. Arkharov, A. A. Bakis, V. Bagaglia, M. Böttcher, M. BUEMI, CARLA SIMONA Carosati, D. Chen, W. P. Efimov, Y. Emmanoulopoulos, D. Erdem, A. Fuhrmann, L. FRASCA, Antonio Fullhart, M. Goyal, A. Heidt, J. Hovatta, T. Hroch, F. Ibrahimov, M. A. Jilková, L. Joshi, M. Kamada, M. Katsuura, M. Kinoshita, D. Kostov, A. Kotaka, D. Kovalev, Y. Y. Krejcová, T. Krichbaum, T. Gopal-Krishna Kurosaki, M. Kurtanidze, O. Lahteenmaki, A. LANTERI, Luciano Larionov, V. Lee, C. -U. Letho, H. LETO, PAOLO Li, J. Lindfors, E. Münz, F. Marilli, E. Matsubara, Y. Mizoguchi, S. Mondal, S. Nakamura, K. Nieppola, E. Nilsson, K. Nishiyama, S. Nucciarelli, G. Ogino, A. Ohlert, J. Oksanen, A. Ovcharov, E. Pak, S. Pasanen, M. Pullen, C. Pursimo, T. Ros, J. A. Sadakane, K. Sadun, A. C. Sagar, R. Sohnk, B. -W. Sumitomo, N. Tanaka, K. TRIGILIO, CORRADO Torniainenk I. Tornikoski, M. UMANA, Grazia Maria Gloria Ungerechts, H. Valtaoja, E. Volvach, A. Webb, J. R. Wu, J. Yim, H. -S. Zhang, Y. |
Issue Date: | 2007 | Journal: | MEMORIE DELLA SOCIETA ASTRONOMICA ITALIANA | Volume: | LI Congresso Nazionale della Società Astronomica Italiana | Editors: | Mannucci, F.; Landini, M.; Palla, F. | Abstract: | Two guest-observer XMM-Newton pointings of the blazar OJ 287 in 2005 are introduced, along with part of the radio, mm, near-IR, and optical data obtained during a coordinated and intensive WEBT campaign, during longer-term monitoring observations performed by teams of the ENIGMA network, and during other independent observing programs (like VLBA observations). In that year OJ 287 showed an interesting variable behavior in the optical band. An optical outburst, well matched by our WEBT observations, is claimed in the period Oct.-Nov. 2005, and the XMM-Newton X-ray observations are performed in correspondence with two active optical states (an intermediate flare and such outburst). X-ray data indicates different flux levels, spectral slopes, and emission components, and VLBA radio maps are consistent with a jet precession model. This appreciable observing effort is still ongoing (a further XMM-Newton pointing is planned in 2008), joined with further parallel/multi-monitoring observing programmes devoted to this interesting object. | Conference Name: | LI Congresso Nazionale della Società Astronomica Italiana | Conference Place: | Firenze | Conference Date: | April 17-20, 2007 | URI: | http://hdl.handle.net/20.500.12386/34745 | URL: | http://sait.oat.ts.astro.it/MSAIt780407/index.html | ISSN: | 0037-8720 | Bibcode ADS: | 2007MmSAI..78..741C | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
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