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Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron. V. Space and ground millimeter-VLBI imaging of OJ 287
Jose L. Gómez, Efthalia Traianou, Thomas P. Krichbaum +27
We present the first polarimetric space VLBI observations of OJ 287, observed with RadioAstron at 22 GHz during a perigee session on 2014 April 4 and five near-in-time snapshots, t…
First Space-VLBI Observations of Sagittarius A*
Michael D. Johnson, Yuri Y. Kovalev, Mikhail M. Lisakov +3
We report results from the first Earth-space VLBI observations of the Galactic Center supermassive black hole, Sgr A*. These observations used the space telescope Spektr-R of the R…
RadioAstron discovery of a mini-cocoon around the restarted parsec-scale jet in 3C 84
T. Savolainen, G. Giovannini, Y. Y. Kovalev +19
We present RadioAstron space-based very long baseline interferometry (VLBI) observations of the nearby radio galaxy 3C84 (NGC1275) at the centre of the Perseus cluster. The observa…
An oversized magnetic sheath wrapping around the parsec-scale jet in 3C 273
M. M. Lisakov, E. V. Kravchenko, A. B. Pushkarev +3
In recent studies, several AGN have exhibited gradients of the Faraday Rotation Measure (RM) transverse to their parsec-scale jet direction. Faraday rotation likely occurs as a res…
Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron IV. The quasar 3C 345 at 18 cm: Magnetic field structure and brightness temperature
F. M. Pötzl, A. P. Lobanov, E. Ros +12
Context. Supermassive black holes in the centres of radio-loud active galactic nuclei (AGN) can produce collimated relativistic outflows (jets). Magnetic fields are thought to play…
RadioAstron reveals a spine-sheath jet structure in 3C 273
G. Bruni, J. L. Gómez, L. Vega-García +13
We present Space-VLBI RadioAstron observations at 1.6 GHz and 4.8 GHz of the flat spectrum radio quasar 3C 273, with detections on baselines up to 4.5 and 3.3 Earth Diameters, resp…