43 citations · 84 across the 6 of their papers we have counts for
7 papers
RadioAstron space-VLBI imaging of the jet in M87: II. The parsec-scale structure at 4.8 GHz
Evgeniya V. Kravchenko, Tuomas Savolainen, Alexey S. Nikonov +9
We present RadioAstron observations of the M87 jet obtained on 2014 February 4-5 at 4.8 GHz ( cm). The correlated signals between the 10-m space antenna and ground-based rad…
A helical magnetic field in quasar NRAO150 revealed by Faraday rotation
J. D. Livingston, A. S. Nikonov, S. A. Dzib +7
Active Galactic Nuclei (AGN) are some of the most luminous and extreme environments in the Universe. The central engines of AGN, believed to be super-massive black-holes, are fed b…
Kilogauss magnetic field and jet dynamics in the quasar NRAO 530
Mikhail Lisakov, Svetlana Jorstad, Maciek Wielgus +12
The advancement of the Event Horizon Telescope has enabled the study of relativistic jets in active galactic nuclei down to sub-parsec linear scales even at high redshift. Quasi-si…
Imaging a ring-like structure and the extended jet of M87 at 86 GHz
Jong-Seo Kim, Hendrik Mueller, Aleksei S. Nikonov +5
The galaxy M87 is one of the prime targets for high resolution radio imaging to investigate the supermassive black hole, accretion flow, and relativistic jet. However, it remains c…
Bayesian self-calibration and imaging in Very Long Baseline Interferometry
Jong-Seo Kim, Aleksei S. Nikonov, Jakob Roth +5
Self-calibration methods with the CLEAN algorithm have been widely employed in Very Long Baseline Interferometry (VLBI) data processing in order to correct antenna-based amplitude…
Properties of the jet in M87 revealed by its helical structure imaged with the VLBA at 8 and 15 GHz
A. S. Nikonov, Y. Y. Kovalev, E. V. Kravchenko +2
We present full-track high-resolution radio observations of the jet of the galaxy M87 at 8 and 15 GHz. These observations were taken over three consecutive days in May 2009 using t…
CLEAN imaging systematics of M87 radio jet
I. N. Pashchenko, E. V. Kravchenko, E. E. Nokhrina +1
The spectral index images of the jet in the nearby radio galaxy M87 have previously been shown with Very Long Baseline Interferometric arrays at 2-43 GHz. They exhibit flattening o…