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Akademický článek
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Akademický článek
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Autor:
Mauri J Valtonen, Staszek Zola, A Gopakumar, Anne Lähteenmäki, Merja Tornikoski, Lankeswar Dey, Alok C Gupta, Tapio Pursimo, Emil Knudstrup, Jose L Gomez, Rene Hudec, Martin Jelínek, Jan Štrobl, Andrei V Berdyugin, Stefano Ciprini, Daniel E Reichart, Vladimir V Kouprianov, Katsura Matsumoto, Marek Drozdz, Markus Mugrauer, Alberto Sadun, Michal Zejmo, Aimo Sillanpää, Harry J Lehto, Kari Nilsson, Ryo Imazawa, Makoto Uemura
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 521:6143-6155
Publisher Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. The bright blazar OJ 287 routinely parades high brightness bremsstrahlung flares, which are explained as being a result of a seco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4259cb5c824a11478c5c4b99ce584b07
https://doi.org/10.1093/mnras/stad922
https://doi.org/10.1093/mnras/stad922
Publikováno v:
Advances in Space Research
The goal of this paper is to investigate the flux and spectral index distribution of FR II radio galaxy 4C 14.11. We focused on the distribution of flux and spectral indices over the lobes, as well as in their hot spots. For that purpose, we used pub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0a14facc3a9a4b18b0e00f5c06b822f
https://doi.org/10.1016/j.asr.2022.05.062
https://doi.org/10.1016/j.asr.2022.05.062
Autor:
Athina Meli, Kenichi Nishikawa, Christoph Köhn, Ioana Duţan, Yosuke Mizuno, Oleh Kobzar, Nicholas MacDonald, José L Gómez, Kouichi Hirotani
Publikováno v:
Meli, A, Nishikawa, K, Köhn, C, Dutan, I, Mizuno, Y, Kobzar, O, MacDonald, N, Gomez, J L & Hirotani, K 2023, ' 3D PIC Simulations for relativistic jets with a toroidal magnetic field ', Monthly Notices of the Royal Astronomical Society, vol. 519, no. 4, pp. 5410-5426 . https://doi.org/10.1093/mnras/stac3474
We have investigated how kinetic instabilities such as the Weibel instability (WI), the mushroom instability (MI), and the kinetic Kelvin–Helmholtz instability (kKHI) are excited in jets without and with a toroidal magnetic field, and how such inst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd59599800cae4692bdb275cb86ea455
https://doi.org/10.1093/mnras/stac3474
https://doi.org/10.1093/mnras/stac3474
Autor:
Dharam V. Lal, Portia Legodi, Bernie Fanaroff, Tiziana Venturi, Oleg M. Smirnov, Marco Bondi, Kshitij Thorat, Landman H. Bester, Gyula I. G. Józsa, Dane Kleiner, Francesca Loi, Sphesihle Makhathini, Sarah V. White
Publikováno v:
Galaxies, Vol 9, Iss 4, p 87 (2021)
We present a progress report of a study of FR I and FR II radio galaxies. Several new morphological features in the radio emission are now revealed using the high (μJy) sensitivity reached in the range 550–1712 MHz, more than a factor of three, at
Externí odkaz:
https://doaj.org/article/2b8fb71882c546ed85bcfc3bdb60cb81
Galaxies exhibiting a specific large-scale extended radio emission, such as X-shaped radio galaxies, belong to a rare class of winged radio galaxies. The morphological evolution of these radio sources is explained using several theoretical models, in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c84c49a37c20757dc0f1f93a971d56da
http://arxiv.org/abs/2305.10576
http://arxiv.org/abs/2305.10576
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:
Wara Chamani, Tuomas Savolainen, Eduardo Ros, Yuri Y. Kovalev, Kaj Wiik, Anne Lähteenmäki, Merja Tornikoski, Joni Tammi
Using VLBI to measure a so-called core shift effect is a common way of obtaining estimates of the jet magnetic field strength. The VLBI core is typically identified as the bright feature at the jet's base, and the position of the core changes with th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::beae3e4f3c683974bdc72d7d3ffa7180
https://aaltodoc.aalto.fi/handle/123456789/120707
https://aaltodoc.aalto.fi/handle/123456789/120707
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 514:2122-2134
Blazars are active galactic nuclei (AGNs) observed at small viewing angles to the observer’s line of sight; hence most of them are compact sources in the radio regime. At low radio frequencies, we may observe additional extended structures, conside
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c24653746e5eb9b09518adb2bce3fd19
https://doi.org/10.1093/mnras/stac1372
https://doi.org/10.1093/mnras/stac1372