C M Raiteri   M Villata   M I Carnerero   S S Savchenko   S O Kurtanidze   V V Vlasyuk   A Marchini   K Matsumoto   C Lorey   M D Joner   K Gazeas   D Carosati   D O Mirzaqulov   J A Acosta Pulido   I Agudo   R Bachev   E Benítez   G A Borman   P Calcidese   W P Chen   G Damljanovic   S A Ehgamberdiev   D Elsässer   M Feige   A Frasca   H Gaur   T S Grishina   A C Gupta   D Hiriart   M Holland   B Horst   S Ibryamov   R Z Ivanidze   J Jensen   V Jithesh   M D Jovanovic   S Kiehlmann   G N Kimeridze   S Kishore   E N Kopatskaya   O M Kurtanidze   E G Larionova   H C Lin   K Mannheim   C Marinelli   J Moreira Reyes   D A Morozova   M G Nikolashvili   D Reinhart   F D Romanov   E Semkov   J Seufert   E V Shishkina   L A Sigua   R Skalidis   O I Spiridonova   M Stojanovic   A Strigachev   Y V Troitskaya   I S Troitskiy   A Tsai   A A Vasilyev   O Vince   K Vrontaki   K Wani   D Watts   A V Zhovtan   
Monthly Notices of the Royal Astronomical Society 526(3) 4502-4513 2023年12月 [査読有り]
ABSTRACT
In 2022 the BL Lac object S4 0954+65 underwent a major variability phase, reaching its historical maximum brightness in the optical and γ-ray bands. We present optical photometric and polarimetric data acquired by the Whole Earth Blazar...
Mauri J Valtonen   Staszek Zola   A Gopakumar   Anne Lähteenmäki   Merja Tornikoski   Lankeswar Dey   Alok C Gupta   Tapio Pursimo   Emil Knudstrup   Jose L Gomez   Rene Hudec   Martin Jelínek   Jan Štrobl   Andrei V Berdyugin   Stefano Ciprini   Daniel E Reichart   Vladimir V Kouprianov   Katsura Matsumoto   Marek Drozdz   Markus Mugrauer   Alberto Sadun   Michal Zejmo   Aimo Sillanpää   Harry J Lehto   Kari Nilsson   Ryo Imazawa   Makoto Uemura   James W Davidson   
Monthly Notices of the Royal Astronomical Society 525(1) 1153-1157 2023年10月 [査読有り]
ABSTRACT
The highly variable blazar OJ 287 is commonly discussed as an example of a binary black hole system. The 130 yr long optical light curve is well explained by a model where the central body is a massive black hole of 18.35 109 s...
Mauri J. Valtonen   Lankeswar Dey   Achamveedu Gopakumar   Staszek Zola   Anne Lähteenmäki   Merja Tornikoski   Alok C. Gupta   Tapio Pursimo   Emil Knudstrup   Jose L. Gomez   Rene Hudec   Martin Jelínek   Jan Štrobl   Andrei V. Berdyugin   Stefano Ciprini   Daniel E. Reichart   Vladimir V. Kouprianov   Katsura Matsumoto   Marek Drozdz   Markus Mugrauer   Alberto Sadun   Michal Zejmo   Aimo Sillanpää   Harry J. Lehto   Kari Nilsson   Ryo Imazawa   Makoto Uemura   
Galaxies 11(4) 82 2023年7月 [査読有り]
We present a summary of the results of the OJ 287 observational campaign, which was carried out during the 2021/2022 observational season. This season is special in the binary model because the major axis of the precessing binary happens to lie al...