N
N. Karaman
Publications - 5
Citations - 312
N. Karaman is an academic researcher. The author has contributed to research in topics: Blazar & Light curve. The author has an hindex of 4, co-authored 5 publications receiving 260 citations.
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Journal ArticleDOI
The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation
Jose Luis Ortiz,Pablo Santos-Sanz,Bruno Sicardy,G. Benedetti-Rossi,Diane Berard,Nicolás Morales,Rene Duffard,Felipe Braga-Ribas,Ulrich Hopp,C. Ries,Valerio Nascimbeni,Valerio Nascimbeni,Francesco Marzari,V. Granata,V. Granata,András Pál,Cs. Kiss,Theodor Pribulla,R. Komžík,Kamil Hornoch,Petr Pravec,Paolo Bacci,Martina Maestripieri,L. Nerli,L. Mazzei,Mauro Bachini,F. Martinelli,Giacomo Succi,F. Ciabattari,Herman Mikuz,A. Carbognani,B. Gaehrken,Stefano Mottola,S. Hellmich,F. L. Rommel,Estela Fernández-Valenzuela,A. Campo Bagatin,Stefan Cikota,Aleksandar Cikota,J. Lecacheux,Roberto Vieira-Martins,Julio Camargo,Marcelo Assafin,François Colas,Raoul Behrend,Josselin Desmars,E. Meza,Alvaro Alvarez-Candal,W. Beisker,A. R. Gomes-Júnior,B. E. Morgado,Françoise Roques,Frédéric Vachier,Jérôme Berthier,T. G. Mueller,José M. Madiedo,Ozan Ünsalan,Eda Sonbas,N. Karaman,O. Erece,D. T. Koseoglu,T. Ozisik,S. Kalkan,Yavuz Güney,Mohammad Shameoni Niaei,O. Satir,Cahit Yeşilyaprak,Ç. Püsküllü,Afşar Kabaş,Osman Demircan,J. Alikakos,Vassilis Charmandaris,Giuseppe Leto,J. M. Ohlert,J. M. Christille,Róbert Szakáts,A. Takácsné Farkas,E. Varga-Verebélyi,Gábor Marton,A. Marciniak,Przemyslaw Bartczak,Toni Santana-Ros,M. Butkiewicz-Bąk,Grzegorz Dudziński,Victor Ali-Lagoa,Kosmas Gazeas,L. Tzouganatos,N. Paschalis,V. Tsamis,Agustín Sánchez-Lavega,Santiago Pérez-Hoyos,Ricardo Hueso,J. C. Guirado,V. Peris,R. Iglesias-Marzoa +94 more
TL;DR: Observations from multiple Earth-based observatories of Haumea passing in front of a distant star (a multi-chord stellar occultation) report the presence of a ring with an opacity of 0.5, which constrains the three-dimensional orientation of Haumesa and its triaxial shape, which is inconsistent with a homogeneous body in hydrostatic equilibrium.
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.
Journal ArticleDOI
Stochastic modeling of multiwavelength variability of the classical BL Lac object OJ 287 on timescales ranging from decades to hours
Arti Goyal,Lukasz Stawarz,Stanisław Zoła,Volodymyr Marchenko,Marian Soida,Kari Nilsson,S. Ciprini,Andrzej S. Baran,M. Ostrowski,Paul J. Wiita,Gopal-Krishna,Aneta Siemiginowska,Malgosia Sobolewska,Svetlana G. Jorstad,Alan P. Marscher,M. F. Aller. H. D. Aller. T. 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,Andrei 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,G. Hurst,K. M. Ivarsen,Arti Joshi,Masato Kagitani,N. Karaman,R. Karjalainen,Navpreet Kaur,D. Kozie l-Wierzbowska,E. Kuligowska,T. Kundera,Sebastian Kurowski,Andreas Kvammen,A. P. LaCluyze,Byeong-Cheol Lee,Alexios Liakos,J. Lozano de Haro,I. Mohammed,J. P. Moore,Markus Mugrauer,R. Naves Nogues,A. W. Neely,Waldemar Ogloza,S. Okano,U. Pajdosz,J. C. Pandey,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,A. Heung,O. Simon,Michal Siwak,Tassilo Schweyer,F. C. Soldán Alfaro,Eda Sonbas,Jan Strobl,L. O. Takalo,L. Tremosa Espasa,J. R. Valdes,V. Vasylenko,F. Verrecchia,James R. Webb,Makoto Yoneda,M. Zejmo,WeiKang Zheng,P. Zieliński,Jan Janík,V. H. Chavushyan,C. C. Cheung,Marcello Giroletti +111 more
TL;DR: In this paper, the authors present the results of a power spectral density analysis for the BL Lac object OJ\,287, utilizing the Fermi-LAT survey at high-energy $\gamma$-rays, {\it Swift}-XRT in X-rays and several ground-based telescopes and the Kepler satellite in the optical, and radio telescopes at GHz frequencies.
Journal ArticleDOI
A Search for QPOs in the Blazar OJ287: Preliminary Results from the 2015/2016 Observing Campaign
Stanisław Zoła,Stanisław Zoła,Mauri Valtonen,Gopal Bhatta,Arti Goyal,B. Debski,Andrzej S. Baran,J. Krzesinski,Michal Siwak,Stefano Ciprini,Achamveedu Gopakumar,Helen Jermak,Kari Nilsson,Daniel E. Reichart,Katsura Matsumoto,Kozo Sadakane,Kosmas Gazeas,M. R. Kidger,Vilppu Piirola,F. Alicavus,Kiran S. Baliyan,Andrei Berdyugin,David Boyd,M. Campas Torrent,F. Campos,J. Carrillo Gómez,Daniel B. Caton,V. H. Chavushyan,J. Dalessio,Dinko Dimitrov,Marek Drozdz,H. Er,Ahmet Erdem,A. Escartin Pérez,V. Fallah Ramazani,Alexei V. Filippenko,F. Garcia,F. Gómez Pinilla,Maheswar Gopinathan,J. B. Haislip,Jussi Harmanen,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,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,R. Reinthal,S. Sadegi,Takeshi Sakanoi,Sameer,J.-L. Salto González,T. Schweyer,T. Schweyer,F. C. Soldán Alfaro,N. Karaman,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,Pere Blay +97 more
TL;DR: In this paper, the authors analyse the light curve in the R band of the blazar OJ287, gathered during the 2015/2016 observing season, and search for quasi-periodic oscillations (QPOs) using several methods over a wide range of timescales.
Posted ContentDOI
Search for QPOs in the Light Curve of the Blazar OJ287: Preliminary Results from 2015/16 Observing Campaign
Staszek Zola,Staszek Zola,Mauri Valtonen,Gopal Bhatta,Arti Goyal,B. Debski,Andrzej S. Baran,J. Krzesinski,Michal Siwak,Stefano Ciprini,Stefano Ciprini,Achamveedu Gopakumar,Helen Jermak,Kari Nilsson,Daniel E. Reichart,Katsura Matsumoto,Kozo Sadakane,Kosmas Gazeas,M. R. Kidger,Vilppu Piirola,F. Alicavus,Kiran S. Baliyan,Andrei Berdyugin,David Boyd,M. Campas Torrent,F. Campos,J. Carrillo Gómez,Daniel B. Caton,V. H. Chavushyan,J. Dalessio,Dinko Dimitrov,Marek Drozdz,Ahmet Erdem,A. Escartin Pérez,V. Fallah Ramazani,Alexei V. Filippenko,F. Garcia,F. Gómez Pinilla,Maheswar Gopinathan,J. B. Haislip,Jussi Harmanen,G. Hurst,K. M. Ivarsen,Martin Jelínek,Arti Joshi,Masato Kagitani,Navpreet Kaur,N. Karaman,William C. Keel,Aaron P. LaCluyze,Byeong-Cheol Lee,Elina Lindfors,J. Lozano de Haro,J. P. Moore,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,R. Reinthal,S. Sadegi,Takeshi Sakanoi,J.-L. Salto Gonzales,Sameer,Tassilo Schweyer,Tassilo Schweyer,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,Pere Blay +96 more
TL;DR: In this article, the authors analyse the light curve in the R-band gathered during the 2015/16 observing season of OJ287 and find no statistically significant periods in the high frequency domain both in the ground data and also in K2 observations.