Zobrazeno 1 - 10 of 141 pro vyhledávání: '"Takalo, L.O."'
1
Stochastic Modeling of Multiwavelength Variability of the Classical BL Lac Object OJ 287 on Timescales Ranging from Decades to Hours
Autor: Goyal, A. Stawarz, Ł. Zola, S. Marchenko, V. Soida, M. Nilsson, K. Ciprini, S. Baran, A. Ostrowski, M. Wiita, P.J. Gopal-Krishna Siemiginowska, A. Sobolewska, M. Jorstad, S. Marscher, A. Aller, M.F. Aller, H.D. Hovatta, T. Caton, D.B. Reichart, D. Matsumoto, K. Sadakane, K. Gazeas, K. Kidger, M. Piirola, V. Jermak, H. Alicavus, F. Baliyan, K.S. Baransky, A. Berdyugin, A. Blay, P. Boumis, P. Boyd, D. Bufan, Y. Torrent, M.C. Campos, F. Gómez, J.C. Dalessio, J. Debski, B. Dimitrov, D. Drozdz, M. Er, H. Erdem, A. Pérez, A.E. Ramazani, V.F. Filippenko, A.V. Gafton, E. Garcia, F. Godunova, V. Pinilla, F.G. Gopinathan, M. Haislip, J.B. Haque, S. Harmanen, J. Hudec, R. Hurst, G. Ivarsen, K.M. Joshi, A. Kagitani, M. Karaman, N. Karjalainen, R. Kaur, N. Kozieł-Wierzbowska, D. Kuligowska, E. Kundera, T. Kurowski, S. Kvammen, A. Lacluyze, A.P. Lee, B.C. Liakos, A. Haro, J.L.D. Moore, J.P. Mugrauer, M. Nogues, R.N. Neely, A.W. Ogloza, W. Okano, S. Pajdosz, U. Pandey, J.C. Perri, M. Poyner, G. Provencal, J. Pursimo, T. Raj, A. Rajkumar, B. Reinthal, R. Reynolds, T. Saario, J. Sadegi, S. Sakanoi, T. González, J.L.S. Sameer Simon, A.O. Siwak, M. Schweyer, T. Alfaro, F.C.S. Sonbas, E. Strobl, J. Takalo, L.O. Espasa, L.T. Valdes, J.R. Vasylenko, V.V. Verrecchia, F. Webb, J.R. Yoneda, M. Zejmo, M. Zheng, W. Zielinski, P. Janik, J. Chavushyan, V. Mohammed, I. Cheung, C.C. Giroletti, M.
We present the results of our power spectral density analysis for the BL Lac object OJ 287, utilizing the Fermi-LAT survey at high-energy γ-rays, Swift-XRT in X-rays, several ground-based telescopes and the Kepler satellite in the optical, and radio
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2127::bd03d330bf6ef0da814bb17ca2063ba5
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3069179
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2
Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using Its General Relativity Centenary Flare: Improved Orbital Parameters
Autor: Dey, L. Valtonen, M.J. Gopakumar, A. Zola, S. Hudec, R. Pihajoki, P. Ciprini, S. Matsumoto, K. Sadakane, K. Kidger, M. Nilsson, K. Mikkola, S. Sillanpää, A. Takalo, L.O. Lehto, H.J. Berdyugin, A. Piirola, V. Jermak, H. Baliyan, K.S. Pursimo, T. Caton, D.B. Alicavus, F. Baransky, A. Blay, P. Boumis, P. Boyd, D. Torrent, M.C. Campos, F. Gómez, J.C. Chandra, S. Chavushyan, V. Dalessio, J. Debski, B. Drozdz, M. Er, H. Erdem, A. Pérez, A.E. Ramazani, V.F. Filippenko, A.V. Gafton, E. Ganesh, S. Garcia, F. Gazeas, K. Godunova, V. Pinilla, F.G. Gopinathan, M. Haislip, J.B. Harmanen, J. Hurst, G. Janík, J. Jelinek, M. Joshi, A. Kagitani, M. Karjalainen, R. Kaur, N. Keel, W.C. Kouprianov, V.V. Kundera, T. Kurowski, S. Kvammen, A. Lacluyze, A.P. Lee, B.C. Liakos, A. Lindfors, E. De Haro, J.L. Mugrauer, M. Nogues, R.N. Neely, A.W. Nelson, R.H. Ogloza, W. Okano, S. Pajdosz-Śmierciak, U. Pandey, J.C. Perri, M. Poyner, G. Provencal, J. Raj, A. Reichart, D.E. Reinthal, R. Reynolds, T. Saario, J. Sadegi, S. Sakanoi, T. González, J.-L.S. Sameer Schweyer, T. Simon, A. Siwak, M. Alfaro, F.C.S. Sonbas, E. Steele, I. Stocke, J.T. Strobl, J. Tomov, T. Espasa, L.T. Valdes, J.R. Pérez, J.V. Verrecchia, F. Vasylenko, V. Webb, J.R. Yoneda, M. Zejmo, M. Zheng, W. Zielinski, P.
Results from regular monitoring of relativistic compact binaries like PSR 1913+16 are consistent with the dominant (quadrupole) order emission of gravitational waves (GWs). We show that observations associated with the binary black hole (BBH) central
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2127::83f326e985a05cfe978a0884f0e3a9a9
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3069155
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3
A search for QPOs in the blazar OJ287: Preliminary results from the 2015/2016 observing campaign
Autor: Zola, S. Valtonen, M. Bhatta, G. Goyal, A. Debski, B. Baran, A. Krzesinski, J. Siwak, M. Ciprini, S. Gopakumar, A. Jermak, H. Nilsson, K. Reichart, D. Matsumoto, K. Sadakane, K. Gazeas, K. Kidger, M. Piirola, V. Alicavus, F. Baliyan, K.S. Berdyugin, A. Boyd, D. Campas Torrent, M. Campos, F. Carrillo Gómez, J. Caton, D.B. Chavushyan, V. Dalessio, J. Dimitrov, D. Drozdz, M. Er, H. Erdem, A. Escartin Pérez, A. Fallah Ramazani, V. Filippenko, A.V. Garcia, F. Gómez Pinilla, F. Gopinathan, M. Haislip, J.B. Harmanen, J. Hudec, R. Hurst, G. Ivarsen, K.M. Jelinek, M. Joshi, A. Kagitani, M. Kaur, N. Keel, W.C. LaCluyze, A.P. Lee, B.C. Lindfors, E. Lozano de Haro, J. Moore, J.P. Mugrauer, M. Naves Nogues, R. Neely, A.W. Nelson, R.H. Ogloza, W. Okano, S. Pandey, J.C. Perri, M. Pihajoki, P. Poyner, G. Provencal, J. Pursimo, T. Raj, A. Reinthal, R. Sadegi, S. Sakanoi, T. Sameer González, J.-L.S. Schweyer, T. Soldán Alfaro, F.C. Karaman, N. Sonbas, E. Steele, I. Stocke, J.T. Strobl, J. Takalo, L.O. Tomov, T. Tremosa Espasa, L. Valdes, J.R. Valero Pérez, J. Verrecchia, F. Webb, J.R. Yoneda, M. Zejmo, M. Zheng, W. Telting, J. Saario, J. Reynolds, T. Kvammen, A. Gafton, E. Karjalainen, R. Blay, P.
We analyse the light curve in the R band of the blazar OJ287, gathered during the 2015/2016 observing season. We did a search for quasi-periodic oscillations (QPOs) using several methods over a wide range of timescales. No statistically significant p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2127::6f34b0aa194f90e7e6c6c988a4e6a837
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3072544
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4
Primary black hole spin in oj 287 AS determined by the general relativity centenary flare
Autor: Valtonen, M.J. Zola, S. Ciprini, S. Gopakumar, A. Matsumoto, K. Sadakane, K. Kidger, M. Gazeas, K. Nilsson, K. Berdyugin, A. Piirola, V. Jermak, H. Baliyan, K.S. Alicavus, F. Boyd, D. Torrent, M.C. Campos, F. Gómez, J.C. Caton, D.B. Chavushyan, V. Dalessio, J. Debski, B. Dimitrov, D. Drozdz, M. Er, H. Erdem, A. Pérez, A.E. Ramazani, V.F. Filippenko, A.V. Ganesh, S. Garcia, F. Gómez Pinilla, F. Gopinathan, M. Haislip, J.B. Hudec, R. Hurst, G. Ivarsen, K.M. Jelinek, M. Joshi, A. Kagitani, M. Kaur, N. Keel, W.C. Lacluyze, A.P. Lee, B.C. Lindfors, E. Lozano De Haro, J. Moore, J.P. Mugrauer, M. Naves Nogues, R. Neely, A.W. Nelson, R.H. Ogloza, W. Okano, S. Pandey, J.C. Perri, M. Pihajoki, P. Poyner, G. Provencal, J. Pursimo, T. Raj, A. Reichart, D.E. Reinthal, R. Sadegi, S. Sakanoi, T. Salto González, J.-L. Sameer Schweyer, T. Siwak, M. Soldán Alfaro, F.C. Sonbas, E. Steele, I. Stocke, J.T. Strobl, J. Takalo, L.O. Tomov, T. Tremosa Espasa, L. Valdes, J.R. Valero Pérez, J. Verrecchia, F. Webb, J.R. Yoneda, M. Zejmo, M. Zheng, W. Telting, J. Saario, J. Reynolds, T. Kvammen, A. Gafton, E. Karjalainen, R. Harmanen, J. Blay, P.
OJ 287 is a quasi-periodic quasar with roughly 12 year optical cycles. It displays prominent outbursts that are predictable in a binary black hole model. The model predicted a major optical outburst in 2015 December. We found that the outburst did oc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2127::1a388ae26ed1dff81631b9b6acb437d7
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3069664
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6
WEBT multiwavelength monitoring and XMM-Newton observations of BL Lacertae in 2007-2008
Autor: RAITERI, Claudia Maria, VILLATA, Massimo, CAPETTI, Alessandro, Aller, M.F., Bach, U., Calcidese, P., Gurwell, M.A., Larionov, V.M., Ohlert, J., Nilsson, K., Strigachev, A., Agudo, I., Aller, H.D., Bachev, R., Benítez, E., Berdyugin, A., Böttcher, M., BUEMI, CARLA SIMONA, Buttiglione, S., Carosati, D., Charlot, P., Chen, W.P., Dultzin, D., Forné, E., Fuhrmann, L., Gómez, J.L., Gupta, A.C., Heidt, J., Hiriart, D., Hsiao, W.-S., Jelínek, M., Jorstad, S.G., Kimeridze, G.N., Konstantinova, T.S., Kopatskaya, E.N., Kostov, A., Kurtanidze, O.M., Lähteenmäki, A., LANTERI, Luciano, Larionova, L.V., LETO, PAOLO, Latev, G., Le Campion, J.-F., Lee, C.-U., Ligustri, R., Lindfors, E., Marscher, A.P., Mihov, B., Nikolashvili, M.G., Nikolov, Y., Ovcharov, E., Principe, D., Pursimo, T., Ragozzine, B., Robb, R.M., Ros, J.A., Sadun, A.C., Sagar, R., Semkov, E., Sigua, L.A., SMART, Richard Laurence, Sorcia, M., Takalo, L.O., Tornikoski, M., TRIGILIO, CORRADO, Uckert, K., UMANA, Grazia Maria Gloria, Valcheva, A., Volvach, A.
In 2007-2008 we carried out a new multiwavelength campaign of the Whole Earth Blazar Telescope (WEBT) on BL Lacertae, involving three pointings by the XMM-Newton satellite, to study its emission properties. The source was monitored in the optical-to-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______4759::f6dc68fe3704011442327e0b586c3064
http://hdl.handle.net/20.500.12386/33028
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9
Testing the inverse-Compton catastrophe scenario in the intra-day variable blazar S5 0716+71 I. Simultaneous broadband observations during November 2003
Autor: Ostorero, L. Wagner, S.J. Gracia, J. Ferrero, E. Krichbaum, T.P. Blitzen, S. Witzel, A. Nilsson, K. Villata, M. Bach, U. Barnaby, D. Bernhart, S. Carini, M.T. Chen, C.W. Chen, W.P. Ciprini, S. Crapanzano, S. Doroshenko, V. Efimova, N.V. Emmanoulopoulos, D. Fuhrmann, L. Gabanyi, K. Giltinan, A. Hagen-Thorn, V. Hauser, M. Heidt, J. Hojaev, A.S. Hovatta, T. Hroch, F. Ibrahimov, M. Impellizzeri, V. Ivanidze, R.Z. Kachel, D. Kraus, A. Kurtanidze, O. Lähteenmäki, A. Lanteri, L. Larionov, V.M. Lin, Z.Y. Lindfors, E. Munz, F. Nikolashvili, M.G. Nucciarelli, G. O'Connor, A. Ohlert, J. Pasanen, M. Pullen, C. Raiteri, C.M. Rector, T.A. Robb, R. Sigua, L.A. Sillanpää, A. Sixtova, L. Smith, N. Strub, P. Takahashi, S. Takalo, L.O. Tapken, C. Tartar, J. Tornikoski, M. Tosti, G. Tröller, M. Walters, R. Wilking, B.A. Wills, W. Agudo, I. Aller, H.D. Aller, M.F. Angelakis, E. Klare, J. Körding, E. Strom, R.G. Teräsranta, H. Ungerechts, H. Vila-Vilaró, B.
Context. Some intra-day variable, compact extra-galactic radio sources show brightness temperatures severely exceeding 1012 K, the limit set by catastrophic inverse-Compton (IC) cooling in sources of incoherent synchrotron radiation. The violation of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2127::f43dd69457c382bdc3b5afa4243c3f8d
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3017607
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