Zobrazeno 1 - 10
of 147
pro vyhledávání: '"M F 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
Publikováno v:
Odessa Astronomical Publications, Vol 28, Iss 2, Pp 217-221 (2016)
We investigated the data of monitoring of flux density of extragalactic sources 3С446 and 3C345, which was held on 26-meter radio telescope of University of Michigan at frequencies 14.5, 8 and 4.8 GHz. The data of observations were investigated usin
Externí odkaz:
https://doaj.org/article/e5ae5917efdb4aa89b44a2a89dcece52
Autor:
A. L. Peirson, I. Liodakis, A. C. S Readhead, M. L. Lister, E. S. Perlman, M. F. Aller, R. D. Blandford, K. J. B. Grainge, D. A. Green, M. A. Gurwell, M. W. Hodges, T. Hovatta, S. Kiehlmann, A. Lähteenmäki, W. Max-Moerbeck, T. Mcaloone, S. O’Neill, V. Pavlidou, T. J. Pearson, V. Ravi, R. A. Reeves, P. F. Scott, G. B. Taylor, D. J. Titterington, M. Tornikoski, H. K. Vedantham, P. N. Wilkinson, D. T. Williams, J. A. Zensus
Publikováno v:
Peirson, A L, Liodakis, I, Readhead, A C S, Lister, M L, Perlman, E S, Aller, M F, Blandford, R D, Grainge, K J B, Green, D A, Gurwell, M A, Hodges, M W, Hovatta, T, Kiehlmann, S, Lähteenmäki, A, Max-Moerbeck, W, Mcaloone, T, O’Neill, S, Pavlidou, V, Pearson, T J, Ravi, V, Reeves, R A, Scott, P F, Taylor, G B, Titterington, D J, Tornikoski, M, Vedantham, H K, Wilkinson, P N, Williams, D T & Zensus, J A 2022, ' New Tests of Milli-lensing in the Blazar PKS 1413 + 135 ', The Astrophysical Journal, vol. 927, no. 1, 24 . https://doi.org/10.3847/1538-4357/ac469e
Symmetric Achromatic Variability (SAV) is a rare form of radio variability in blazars that has been attributed to gravitational millilensing by a ~$10^2 - 10^5$ $M_\odot$ mass condensate. Four SAVs have been identified between 1980 and 2020 in the lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e95f1762a34d184bed1ec77fea6a45bb
https://resolver.caltech.edu/CaltechAUTHORS:20220302-596599132
https://resolver.caltech.edu/CaltechAUTHORS:20220302-596599132
Autor:
S. O’Neill, S. Kiehlmann, A. C. S. Readhead, M. F. Aller, R. D. Blandford, I. Liodakis, M. L. Lister, P. Mróz, C. P. O’Dea, T. J. Pearson, V. Ravi, M. Vallisneri, K. A. Cleary, M. J. Graham, K. J. B. Grainge, M. W. Hodges, T. Hovatta, A. Lähteenmäki, J. W. Lamb, T. J. W. Lazio, W. Max-Moerbeck, V. Pavlidou, T. A. Prince, R. A. Reeves, M. Tornikoski, P. Vergara de la Parra, J. A. Zensus
Publikováno v:
O’neill, S, Kiehlmann, S, Readhead, A C S, Aller, M F, Blandford, R D, Liodakis, I, Lister, M L, Mróz, P, O’dea, C P, Pearson, T J, Ravi, V, Vallisneri, M, Cleary, K A, Graham, M J, Grainge, K J B, Hodges, M W, Hovatta, T, Lähteenmäki, A, Lamb, J W, Lazio, T J W, Max-moerbeck, W, Pavlidou, V, Prince, T A, Reeves, R A, Tornikoski, M, Vergara De La Parra, P & Zensus, J A 2022, ' The Unanticipated Phenomenology of the Blazar PKS 2131–021: A Unique Supermassive Black Hole Binary Candidate ', The Astrophysical Journal Letters, vol. 926, no. 2, pp. L35 . https://doi.org/10.3847/2041-8213/ac504b
Most large galaxies host supermassive black holes in their nuclei and are subject to mergers, which can produce a supermassive black hole binary (SMBHB), and hence periodic signatures due to orbital motion. We report unique periodic radio flux densit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f06b94809f0ff07343021fde0825a0d2
https://aaltodoc.aalto.fi/handle/123456789/113797
https://aaltodoc.aalto.fi/handle/123456789/113797
Autor:
A. L. Sukharev, M. F. Aller
Publikováno v:
Odessa Astronomical Publications, Vol 27, Iss 2, Pp 146-148 (2014)
3C120 – radio galaxy with an active nucleus has been intensively studied for many years in a wide range of the electromagnetic spectrum. We used observational data for 1966-2010 years, obtained with the radio telescope at Michigan State University
Externí odkaz:
https://doaj.org/article/493308e253a043298c8cc8f798f4d819
Publikováno v:
Odessa Astronomical Publications, Vol 25, Iss 2, Pp 203-205 (2012)
3C 273- has been intensively investigated for many years, since opening of quasars in 1963. Since 1965 on radio telescope RT-26 of Michigan University on frequencies 14.5, 8 and 4.8 GHz long monitoring of this radio source have been carried out. Flux
Externí odkaz:
https://doaj.org/article/79dc85e171824a0f9f442456dde86edd
Autor:
A. M. Kutkin, Hugh D. Aller, Kirill Sokolovsky, M. F. Aller, I. N. Pashchenko, Yuri Y. Kovalev
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 486:430-439
Synchrotron self-absorption in active galactic nuclei (AGN) jets manifests itself as a time delay between flares observed at high and low radio frequencies. It is also responsible for the observing frequency dependent change in size and position of t