The Unique Blazar OJ 287 and Its Massive Binary Black Hole Central Engine by Lankeswar Dey, Achamveedu Gopakumar, Mauri Valtonen, Stanislaw Zola, Abhimanyu Susobhanan, Rene Hudec, Pauli Pihajoki, Tapio Pursimo, Andrei Berdyugin, Vilppu Piirola, Stefano Ciprini, Kari Nilsson, Helen Jermak, Mark Kidger, Stefanie Komossa

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SN 2017egm: A Helium-rich Superluminous Supernova with Multiple Bumps in the Light Curves by Jiazheng Zhu, Ning Jiang, Subo Dong, Alexei V. Filippenko, Richard J. Rudy, A. Pastorello, Christopher Ashall, Subhash Bose, R. S. Post, D. Bersier, Stefano Benetti, Thomas G. Brink, Ping Chen, Liming Dou, N. Elias-Rosa, Peter Lundqvist, Seppo Mattila, Ray W. Russell, Michael L. Sitko, Auni Somero, M. D. Stritzinger, Tinggui Wang, Peter J. Brown, E. Cappellaro, Morgan Fraser, Erkki Kankare, S. Moran, Simon Prentice, Tapio Pursimo, T. M. Reynolds, WeiKang Zheng

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Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary System by Mauri J. Valtonen, Staszek Zola, Alok C. Gupta, Shubham Kishore, Achamveedu Gopakumar, Svetlana G. Jorstad, Paul J. Wiita, Minfeng Gu, Kari Nilsson, Alan P. Marscher, Zhongli Zhang, Rene Hudec, Katsura Matsumoto, Marek Drozdz, Waldemar Ogloza, Andrei V. Berdyugin, Daniel E. Reichart, Markus Mugrauer, Lankeswar Dey, Tapio Pursimo, Harry J. Lehto, Stefano Ciprini, T. Nakaoka, M. Uemura, Ryo Imazawa, Michal Zejmo, Vladimir V. Kouprianov, James W. Davidson Jr., Alberto Sadun, Jan Štrobl, Z. R. Weaver, Martin Jelínek

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