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A new view on the M87 jet origin: Turbulent loading leading to large-scale episodic wiggling
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SYSNO ASEP 0484586 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název A new view on the M87 jet origin: Turbulent loading leading to large-scale episodic wiggling Tvůrce(i) Britzen, S. (DE)
Fendt, C. (DE)
Eckart, A. (DE)
Karas, Vladimír (ASU-R) RID, ORCIDZdroj.dok. Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 601, May (2017), A52/1-A52/17Poč.str. 17 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova interferometric techniques ; active galaxies ; jets Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika Obor OECD Astronomy (including astrophysics,space science) Institucionální podpora ASU-R - RVO:67985815 UT WOS 000402313500052 EID SCOPUS 85018319894 DOI 10.1051/0004-6361/201629469 Anotace We aim to decipher some of the kinematic puzzles in the pc-scale jet with the analysis we present here. We find an indication for apparent superluminal motion in the jet. Moreover, we present evidence for acceleration between 0.5 and 10 mas of core separation. The data suggest that the central part of M87 at 15 GHz seems to be rotating. Jet components and counter-jet components are ejected in different directions under varying angles, explaining the impression of a broad opening angle. In this paper we present evidence for two different operating modes of the jet of M87. The jet switches between two phases: i) the jet ridge line is at least double or the jet axis is displaced vertically, and ii) an unperturbed phase where the jet ridge line remains almost straight but is smoothly curved and the jet components are aligned along a classical jet axis. The mode change occurs every couple of years. Between the two operating modes, a transition phase is visible. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2018
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