Zobrazeno 1 - 10
of 105
pro vyhledávání: '"H D Aller"'
Autor:
Goyal, A., Stawarz, L., 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., Hovatta, M. F. Aller H. D. Aller 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. Campas, Campos, F., Gomez, J. Carrillo, Dalessio, J., Debski, B., Dimitrov, D., Drozdz, M., Er, H., Erdem, A., Perez, A. Escartin, Ramazani, V. Fallah, Filippenko, A. V., Gafton, E., Garcia, F., Godunova, V., Pinilla, F. Gomez, 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., l-Wierzbowska, D. Kozie, Kuligowska, E., Kundera, T., Kurowski, S., Kvammen, A., LaCluyze, A. P., Lee, B. C., Liakos, A., de Haro, J. Lozano, Mohammed, I., Moore, J. P., Mugrauer, M., Nogues, R. Naves, 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., Gonzalez, J. L. Salto, Sameer, Heung, A., Simon, O., Siwak, M., Schweyer, T., Alfaro, F. C. Soldan, Sonbas, E., Strobl, J., Takalo, L. O., Espasa, L. Tremosa, Valdes, J. R., Vasylenko, V. V., Verrecchia, F., Webb, J. R., Yoneda, M., Zejmo, M., Zheng, W., Zielinski, P., Janik, J., Chavushyan, V., Cheung, C. C., Giroletti, M.
We present the results of our power spectral density analysis for the BL Lac object OJ\,287, utilizing the {\it Fermi}-LAT survey at high-energy $\gamma$-rays, {\it Swift}-XRT in X-rays, several ground-based telescopes and the {\it Kepler} satellite
Externí odkaz:
http://arxiv.org/abs/1709.04457
Autor:
Lister, M. L., Hovatta, M. F. Aller. H. D. Aller. T., Max-Morbeck, W., Readhead, A. C. S., Richards, J. L., Ros, E.
We use the complete MOJAVE 1.5 Jy sample of active galactic nuclei (AGN) to examine the gamma-ray detection statistics of the brightest radio-loud blazars in the northern sky. We find that 23% of these AGN were not detected above 0.1 GeV by the Fermi
Externí odkaz:
http://arxiv.org/abs/1507.05953
Autor:
D I Zobnina, H D Aller, M F Aller, D C Homan, Y Y Kovalev, M L Lister, I N Pashchenko, A B Pushkarev, T Savolainen
Publikováno v:
Monthly Notices of the Royal Astronomical Society.
Using stacking of images obtained at different epochs, we studied the variability properties of linear polarization of active galactic nucleus (AGN) jets on parsec-scales. Our sample is drawn from the MOJAVE programme, and consists of 436 AGNs manife
Autor:
A B Pushkarev, H D Aller, M F Aller, D C Homan, Y Y Kovalev, M L Lister, I N Pashchenko, T Savolainen, D I Zobnina
We analysed the parsec-scale linear polarization properties of 436 active galactic nuclei (AGN) based on 15 GHz polarimetric Very Long Baseline Array (VLBA) observations. We present polarization and total intensity images averaged over at least five
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7050cf44c8c2172c79fca5fdde3dd754
https://aaltodoc.aalto.fi/handle/123456789/121476
https://aaltodoc.aalto.fi/handle/123456789/121476
Autor:
Ioannis Liodakis, Talvikki Hovatta, Mark Gurwell, H. D. Aller, Margo F. Aller, Anne Lähteenmäki, Merja Tornikoski
Supermassive black holes launch highly relativistic jets with velocities reaching Lorentz factors as high as $\Gamma>50$. How the jets accelerate to such high velocities and where along the jet do they reach terminal velocity are open questions that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fffb41aeaa34424fef52f7792e303f7
http://arxiv.org/abs/2108.10892
http://arxiv.org/abs/2108.10892
Autor:
M. G. Larionov, G. Pooley, L. N. Volvach, Anne Lähteenmäki, E. Recillas, Merja Tornikoski, V. V. Vlasyuk, N. S. Kardashev, A. Porras, L. Carrasco, O. I. Spiridonova, A. E. Volvach, V. S. Bychkova, H. D. Aller, M. F. Aller
Publikováno v:
ASTRONOMY REPORTS. 60(12):1035-1045
Data from long-term multi-frequency monitoring are used to analyze variations in the flux density of the active galactic nucleus S4 0954+658. These data were obtained at the CrimeanAstrophysical Observatory, the Metsahovi Radio Observatory of Aalto U
Autor:
H. D. Aller, L. N. Volvach, M. G. Larionov, Mahito Sasada, Anne Lähteenmäki, Merja Tornikoski, M. F. Aller, A. E. Volvach
Publikováno v:
Astronomy Reports. 59:145-155
Long series of multi-frequency monitoring data of the active galactic nucleus (AGN) AO 0235+164 from the radio to the gamma-ray are analyzed. AO 0235+164 may be a close binary system comprised of two supermassive black holes (SMBHs). A harmonic analy
Autor:
A. Goyal, Ł. Stawarz, S. Zola, V. Marchenko, M. Soida, K. Nilsson, S. Ciprini, A. Baran, M. Ostrowski, P. J. Wiita, null Gopal-Krishna, A. Siemiginowska, M. Sobolewska, S. Jorstad, A. Marscher, M. F. Aller, H. D. Aller, T. Hovatta, D. B. Caton, D. Reichart, K. Matsumoto, K. Sadakane, K. Gazeas, M. Kidger, V. Piirola, H. Jermak, F. Alicavus, K. S. Baliyan, A. Baransky, A. Berdyugin, P. Blay, P. Boumis, D. Boyd, Y. Bufan, M. Campas Torrent, F. Campos, J. Carrillo Gómez, J. Dalessio, B. Debski, D. Dimitrov, M. Drozdz, H. Er, A. Erdem, A. Escartin Pérez, V. Fallah Ramazani, A. V. Filippenko, E. Gafton, F. Garcia, V. Godunova, F. Gómez Pinilla, M. Gopinathan, J. B. Haislip, S. Haque, J. Harmanen, R. Hudec, G. Hurst, K. M. Ivarsen, A. Joshi, M. Kagitani, N. Karaman, R. Karjalainen, N. Kaur, D. Kozieł-Wierzbowska, E. Kuligowska, T. Kundera, S. Kurowski, A. Kvammen, A. P. LaCluyze, B. C. Lee, A. Liakos, J. Lozano de Haro, J. P. Moore, M. Mugrauer, R. Naves Nogues, A. W. Neely, W. Ogloza, S. Okano, U. Pajdosz, J. C. Pandey, M. Perri, G. Poyner, J. Provencal, T. Pursimo, A. Raj, B. Rajkumar, R. Reinthal, T. Reynolds, J. Saario, S. Sadegi, T. Sakanoi, J. L. Salto González, null Sameer, A. O. Simon, M. Siwak, T. Schweyer, F. C. Soldán Alfaro, E. Sonbas, J. Strobl, L. O. Takalo, L. Tremosa Espasa, J. R. Valdes, V. V. Vasylenko, F. Verrecchia, J. R. Webb, M. Yoneda, M. Zejmo, W. Zheng, P. Zielinski, J. Janik, V. Chavushyan, I. Mohammed, C. C. Cheung, M. Giroletti
Publikováno v:
BASE-Bielefeld Academic Search Engine
We present the results of our power spectral density analysis for the BL Lac object OJ\,287, utilizing the {\it Fermi}-LAT survey at high-energy $\gamma$-rays, {\it Swift}-XRT in X-rays, several ground-based telescopes and the {\it Kepler} satellite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0448d8e121336c74d9d2224b430c32b
Autor:
A. E. Volvach, A. M. Kutkin, Mahito Sasada, A. Lakhteenmaki, Joni Tammi, H. D. Aller, M. G. Larionov, L. N. Volvach, M. F. Aller, Merja Tornikoski, P. Savolainen
Publikováno v:
Astronomy Reports. 58:71-77
Flux-density variations of the quasar S0528+134 (Nimfa) are analyzed based on long-term monitoring at five radio frequencies between 4.8 and 37 GHz, performed at the Crimean Astrophysical Observatory, the Metsahovi Radio Observatory of Aalto Universi
Autor:
M. F. Aller, H. D. Aller, L. N. Volvach, Anne Lähteenmäki, A. E. Volvach, Joni Tammi, Merja Tornikoski, M. G. Larionov, Jonathan León-Tavares, Emilia Järvelä, A. M. Kutkin
Publikováno v:
Astronomicheskii Zhurnal / Astronomy Reports. 57(1):46-51
We present an analysis of data from multi-frequency monitoring of the blazar 3C 454.3 in 2010–2012, when the source experienced an unusually prolonged flare with a duration of about two years. This corresponds to the orbital period of the companion