S
S. Okano
Researcher at Tohoku University
Publications - 28
Citations - 742
S. Okano is an academic researcher from Tohoku University. The author has contributed to research in topics: Exosphere & Blazar. The author has an hindex of 13, co-authored 28 publications receiving 660 citations. Previous affiliations of S. Okano include Kumamoto University & Japan Aerospace Exploration Agency.
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Journal ArticleDOI
Primary Black Hole Spin in OJ 287 as Determined by the General Relativity Centenary Flare
Mauri Valtonen,Stanisław Zoła,Stanisław Zoła,Stefano Ciprini,Stefano Ciprini,Achamveedu Gopakumar,Katsura Matsumoto,Kozo Sadakane,M. R. Kidger,Kosmas Gazeas,Kari Nilsson,Andrei Berdyugin,Vilppu Piirola,Helen Jermak,Kiran S. Baliyan,F. Alicavus,David Boyd,M. Campas Torrent,F. Campos,J. Carrillo Gómez,Daniel B. Caton,V. H. Chavushyan,J. Dalessio,B. Debski,Dinko Dimitrov,Marek Drozdz,H. Er,Ahmet Erdem,A. Escartin Pérez,V. Fallah Ramazani,Alexei V. Filippenko,Shashikiran Ganesh,F. Garcia,F. Gómez Pinilla,Maheswar Gopinathan,J. B. Haislip,René Hudec,René Hudec,G. Hurst,K. M. Ivarsen,Martin Jelínek,Arti Joshi,Masato Kagitani,Navpreet Kaur,William C. Keel,Aaron P. LaCluyze,Byeong-Cheol Lee,Byeong-Cheol Lee,Elina Lindfors,J. Lozano de Haro,J. P. Moore,Markus Mugrauer,R. Naves Nogues,A. W. Neely,R. H. Nelson,Waldemar Ogloza,S. Okano,Jeewan C. Pandey,M. Perri,M. Perri,Pauli Pihajoki,Gary Poyner,Judith L. Provencal,T. Pursimo,A. Raj,A. Raj,Daniel E. Reichart,R. Reinthal,S. Sadegi,Takeshi Sakanoi,J.-L. Salto González,Sameer,T. Schweyer,T. Schweyer,Michal Siwak,F. C. Soldán Alfaro,Eda Sonbas,Iain A. Steele,John T. Stocke,Jan Strobl,L. O. Takalo,Toma Tomov,L. Tremosa Espasa,J. R. Valdes,J. Valero Pérez,F. Verrecchia,F. Verrecchia,James R. Webb,Mizuki Yoneda,M. Zejmo,WeiKang Zheng,J. H. Telting,J. Saario,T. M. Reynolds,Andreas Kvammen,E. Gafton,R. Karjalainen,Jussi Harmanen,Pere Blay +98 more
TL;DR: In this paper, a quasi-periodic quasar with roughly 12-year optical cycles displays prominent outbursts that are predictable in a binary black hole model, and the model predicted a major optical outburst in 2015 December.
Journal ArticleDOI
Primary black hole spin in OJ287 as determined by the General Relativity centenary flare
Mauri Valtonen,Staszek Zola,S. Ciprini,Achamveedu Gopakumar,Katsura Matsumoto,Kozo Sadakane,M. R. Kidger,Kosmas Gazeas,Kari Nilsson,Andrei Berdyugin,Vilppu Piirola,Helen Jermak,Kiran S. Baliyan,F. Alicavus,David Boyd,M. Campas Torrent,F. Campos,J. Carrillo Gómez,Daniel B. Caton,V. H. Chavushyan,J. Dalessio,B. Debski,Dinko Dimitrov,Marek Drozdz,H. Er,Ahmet Erdem,A. Escartin Pérez,V. Fallah Ramazani,Alexei V. Filippenko,Shashikiran Ganesh,F. Garcia,F. Gómez Pinilla,Maheswar Gopinathan,J. B. Haislip,René Hudec,G. Hurst,K. M. Ivarsen,Martin Jelínek,Arti Joshi,Masato Kagitani,Navpreet Kaur,William C. Keel,A. P. LaCluyze,Byeong-Cheol Lee,Elina Lindfors,J. Lozano de Haro,J. P. Moore,Markus Mugrauer,R. Naves Nogues,A. W. Neely,R. H. Nelson,Waldemar Ogloza,S. Okano,Jeewan C. Pandey,M. Perri,Pauli Pihajoki,Gary Poyner,Judith L. Provencal,T. Pursimo,A. Raj,Daniel E. Reichart,R. Reinthal,S. Sadegi,Takeshi Sakanoi,J.-L. Salto González,Tassilo Schweyer,Michal Siwak,F. C. Soldán Alfaro,Eda Sonbas,Iain A. Steele,John T. Stocke,Jan Strobl,L. O. Takalo,Toma Tomov,L. Tremosa Espasa,J. R. Valdes,J. Valero Pérez,F. Verrecchia,James R. Webb,Mizuki Yoneda,M. Zejmo,WeiKang Zheng,J. H. Telting,J. Saario,T. M. Reynolds,Andreas Kvammen,E. Gafton,R. Karjalainen,Jussi Harmanen,Pere Blay +89 more
TL;DR: In this article, the authors found that the outburst did occur within the expected time range, peaking on 2015 December 5 at magnitude 12.9 in the optical R-band, based on Swift/XRT satellite measurements and optical polarization data.
Journal ArticleDOI
Planet-C: Venus Climate Orbiter mission of Japan
Masato Nakamura,Masato Nakamura,Takeshi Imamura,Takeshi Imamura,Munetaka Ueno,Munetaka Ueno,Munetaka Ueno,Naomoto Iwagami,Naomoto Iwagami,Naomoto Iwagami,Takehiko Satoh,Takehiko Satoh,Shigeto Watanabe,Shigeto Watanabe,Shigeto Watanabe,Makoto Taguchi,Makoto Taguchi,Makoto Taguchi,Yukihiro Takahashi,Yukihiro Takahashi,Yukihiro Takahashi,Makoto Suzuki,Makoto Suzuki,Takumi Abe,Takumi Abe,George Hashimoto,George Hashimoto,George Hashimoto,Takeshi Sakanoi,Takeshi Sakanoi,Takeshi Sakanoi,S. Okano,S. Okano,S. Okano,Yasumasa Kasaba,Yasumasa Kasaba,Jun Yoshida,Jun Yoshida,Jun Yoshida,Manabu Yamada,Manabu Yamada,Manabu Yamada,Nobuaki Ishii,Nobuaki Ishii,Takahiro Yamada,Takahiro Yamada,Kazunori Uemizu,Kazunori Uemizu,Tetsuya Fukuhara,Tetsuya Fukuhara,Koh-Ichiro Oyama,Koh-Ichiro Oyama +51 more
TL;DR: The Venus Climate Orbiter mission (PLANET-C) as discussed by the authors aims at understanding the atmospheric circulation of Venus Meteorological information will be obtained by globally mapping clouds and minor constituents successively with four cameras at ultraviolet and infrared wavelengths, detecting lightning with a high-speed imager, and observing the vertical structure of the atmosphere with radio science technique.
Journal ArticleDOI
Authenticating the presence of a relativistic massive black hole binary in OJ 287 using its general relativity centenary flare: improved orbital parameters
Lankeswar Dey,Mauri Valtonen,Achamveedu Gopakumar,Stanisław Zoła,Stanisław Zoła,René Hudec,René Hudec,Pauli Pihajoki,Stefano Ciprini,Stefano Ciprini,Katsura Matsumoto,Kozo Sadakane,M. R. Kidger,Kari Nilsson,Seppo Mikkola,A. Sillanpää,L. O. Takalo,Harry Lehto,Andrei Berdyugin,Vilppu Piirola,Helen Jermak,Kiran S. Baliyan,T. Pursimo,Daniel B. Caton,F. Alicavus,A. Baransky,Pere Blay,P. Boumis,David Boyd,M. Campas Torrent,F. Campos,J. Carrillo Gómez,Sudeep Chandra,V. H. Chavushyan,J. Dalessio,B. Debski,Marek Drozdz,H. Er,Ahmet Erdem,A. Escartin Pérez,V. Fallah Ramazani,Alexei V. Filippenko,E. Gafton,Shashikiran Ganesh,F. Garcia,Kosmas Gazeas,V. Godunova,F. Gómez Pinilla,Maheswar Gopinathan,J. B. Haislip,Jussi Harmanen,G. Hurst,Jan Janík,Martin Jelínek,Martin Jelínek,Arti Joshi,Masato Kagitani,R. Karjalainen,Navpreet Kaur,William C. Keel,Vladimir Kouprianov,Vladimir Kouprianov,T. Kundera,Sebastian Kurowski,Andreas Kvammen,Aaron P. LaCluyze,Byeong-Cheol Lee,Byeong-Cheol Lee,Alexios Liakos,Elina Lindfors,J. Lozano de Haro,Markus Mugrauer,R. Naves Nogues,A. W. Neely,R. H. Nelson,Waldemar Ogloza,S. Okano,Urszula Pajdosz-Śmierciak,Jeewan C. Pandey,M. Perri,M. Perri,Gary Poyner,Judith L. Provencal,A. Raj,Daniel E. Reichart,R. Reinthal,T. M. Reynolds,J. Saario,S. Sadegi,Takeshi Sakanoi,J.-L. Salto González,Sameer,T. Schweyer,T. Schweyer,A. Simon,Michal Siwak,F. C. Soldán Alfaro,Eda Sonbas,Iain A. Steele,John T. Stocke,Jan Strobl,Jan Strobl,Toma Tomov,L. Tremosa Espasa,J. R. Valdes,J. Valero Pérez,F. Verrecchia,F. Verrecchia,V. Vasylenko,James R. Webb,Mizuki Yoneda,M. Zejmo,WeiKang Zheng,P. Zielinski +113 more
TL;DR: In this article, it was shown that even the effects of certain hereditary contributions to GW emission are required to predict impact flare timings of OJ 287, and they developed an approach that incorporated this effect into the BBH model for OJ287.
Journal ArticleDOI
Stochastic Modeling of Multiwavelength Variability of the Classical BL Lac Object OJ 287 on Timescales Ranging from Decades to Hours
Arti Goyal,Łukasz Stawarz,Stanisław Zoła,Stanisław Zoła,Volodymyr Marchenko,Marian Soida,Kari Nilsson,Stefano Ciprini,Stefano Ciprini,Andrzej S. Baran,Michal Ostrowski,Paul J. Wiita,Gopal-Krishna,Aneta Siemiginowska,Malgosia Sobolewska,Svetlana G. Jorstad,Svetlana G. Jorstad,Alan P. Marscher,M. F. Aller,Hugh D. Aller,Talvikki Hovatta,Daniel B. Caton,Daniel E. Reichart,Katsura Matsumoto,Kozo Sadakane,Kosmas Gazeas,M. Kidger,Vilppu Piirola,Helen Jermak,F. Alicavus,Kiran S. Baliyan,A. Baransky,A. Berdyugin,Pere Blay,P. Boumis,David Boyd,Y. Bufan,M. Campas Torrent,F. Campos,J. Carrillo Gómez,J. Dalessio,B. Debski,Dinko Dimitrov,Marek Drozdz,H. Er,Ahmet Erdem,A. Escartin Pérez,V. Fallah Ramazani,Alexei V. Filippenko,E. Gafton,F. Garcia,V. Godunova,F. Gómez Pinilla,Maheswar Gopinathan,J. B. Haislip,S. Haque,Jussi Harmanen,René Hudec,René Hudec,G. Hurst,K. M. Ivarsen,Arti Joshi,Masato Kagitani,N. Karaman,R. Karjalainen,Navpreet Kaur,Navpreet Kaur,Dorota Kozieł-Wierzbowska,E. Kuligowska,T. Kundera,Sebastian Kurowski,Andreas Kvammen,Aaron P. LaCluyze,Byeong-Cheol Lee,Alexios Liakos,J. Lozano de Haro,J. P. Moore,Markus Mugrauer,R. Naves Nogues,A. W. Neely,Waldemar Ogloza,S. Okano,U. Pajdosz,J. C. Pandey,M. Perri,M. Perri,Gary Poyner,Judith L. Provencal,T. Pursimo,A. Raj,B. Rajkumar,R. Reinthal,T. M. Reynolds,J. Saario,S. Sadegi,Takeshi Sakanoi,J.-L. Salto González,Sameer,Sameer,A. Simon,Michal Siwak,Tassilo Schweyer,Tassilo Schweyer,F. C. Soldán Alfaro,Eda Sonbas,J. Strobl,L. O. Takalo,L. Tremosa Espasa,J. R. Valdes,V. Vasylenko,F. Verrecchia,F. Verrecchia,James R. Webb,Makoto Yoneda,M. Zejmo,WeiKang Zheng,P. Zieliński,J. Janik,V. H. Chavushyan,I. Mohammed,C. C. Cheung,Marcello Giroletti +121 more
TL;DR: In this paper, the authors acknowledge support from the Polish National Science Centre (NCN) through the grant 2012/04/A/ST9/04404 and 2017/27/B/ST 9/01855.