42 citations · 115 across the 5 of their papers we have counts for
7 papers · 1 filter
Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign
J. C. Algaba, J. Anczarski, K. Asada +36
In 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing the first direct image of the center of the M87 galaxy. The asymmetric ring morphology and size are…
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…
Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron. III. Blazar S5 0716+71 at microarcsecond resolution
Evgeniya V. Kravchenko, Jose L. Gómez, Yuri Y. Kovalev +10
We present RadioAstron Space VLBI imaging observations of the BL Lac object S5 0716+71 made on January 3-4 2015 at a frequency of 22 GHz (wavelength cm). The observations w…
Investigating the connection between gamma-ray activity and relativistic jet in 3C273 during 2015-2019
Dae-Won Kim, Sascha Trippe, Evgeniya V. Kravchenko
Due to its powerful radiation over the entire electromagnetic spectrum and its radio jet activity, the blazar 3C273 offers the opportunity to study the physics of -ray emission…
Multi-Frequency VLBA Polarimetry and the Twin-Jet Quasar 0850+581
E. V. Kravchenko, Y. Y. Kovalev
We present the first multi-frequency VLBA study of the quasar 0850+581 which appears to have a two-sided relativistic jet.Apparent velocity in the approaching jet changes from 3.4c…