50 citations · 280 across the 17 of their papers we have counts for
17 papers
Method for Determining the Parameters of a Ring-like Structure from the Visibility Function Shape
S. V. Chernov, M. A. Shchurov, I. I. Bulygin +1
Black hole images obtained by very long baseline interferometry (VLBI) by the Event Horizon Telescope are a new tool for testing general relativity in super-strong gravitational fi…
Orbit Design for the Millimetron Space Observatory
T. A. Syachina, A. G. Rudnitskiy, P. V. Mzhelskiy +2
Millimetron is a space observatory for millimeter and sub-millimeter observations planned for launch around 2030. The 10-meter diameter space unfolded telescope will be cooled down…
Estimation of Orbital Parameters from (u,v)-coverage for a Space Radio Interferometer
I. I. Bulygin, M. A. Shchurov, A. G. Rudnitskiy
Finding a suitable very long baseline (VLBI) interferometer geometry is a key task in planning observations, especially imaging sessions. The main characteristic of the quality of…
On Optimal Geometry for Space Interferometers
A. G. Rudnitskiy, M. A. Shchurov, S. V. Chernov +2
This paper examines options for orbit configurations for a space interferometer. In contrast to previously presented concepts for space very long baseline interferometry, we propos…
Processing System for Coherent Dedispersion of Pulsar Radio Emission
Girin I. A., Likhachev S. F., Andrianov A. S. +5
The work describes a system for converting VLBI observation data using the algorithms of coherent dedispersion and compensation of two-bit signal sampling. Coherent dedispersion is…
Technical constraints on interstellar interferometry and spatially resolving the pulsar magnetosphere
M. V. Popov, N. Bartel, A. S. Andrianov +6
Scintillation of pulsar radio signals caused by the interstellar medium can in principle be used for interstellar interferometry. Changes of the dynamic spectra as a function of pu…
Analysis of Orbital Configurations for Millimetron Space Observatory
A. G. Rudnitskiy, P. V. Mzhelskiy, M. A. Shchurov +2
In this contribution a primary feasibility study of different orbital configurations for Millimetron space observatory is presented. Priority factors and limitations were considere…
High Resolution Imaging of a Black Hole Shadow with Millimetron Orbit around Lagrange Point L2
S. F. Likhachev, A. G. Rudnitskiy, M. A. Shchurov +4
Imaging of the shadow around supermassive black hole (SMBH) horizon with a very long baseline interferometry (VLBI) is recognized recently as a powerful tool for experimental testi…
Simulations of M87 and Sgr A* Imaging with the Millimetron Space Observatory on near-Earth orbits
A. S. Andrianov, A. M. Baryshev, H. Falcke +11
High resolution imaging of supermassive black holes shadows is a direct way to verify the theory of general relativity at extreme gravity conditions. Very Long Baseline Interferome…
Detection statistics of the RadioAstron AGN survey
Y. Y. Kovalev, N. S. Kardashev, K. V. Sokolovsky +57
The largest Key Science Program of the RadioAstron space VLBI mission is a survey of active galactic nuclei (AGN). The main goal of the survey is to measure and study the brightnes…
RadioAstron orbit determination and evaluation of its results using correlation of space-VLBI observations
M. V. Zakhvatkin, A. S. Andrianov, V. Yu. Avdeev +14
A crucial part of a space mission for very-long baseline interferometery (VLBI), which is the technique capable of providing the highest resolution images in astronomy, is orbit de…
Revealing compact structures of interstellar plasma in the Galaxy with RadioAstron
E. N. Fadeev, A. S. Andrianov, M. S. Burgin +6
The aim of our work was to study the spatial structure of inhomogeneities of interstellar plasma in the directions of five pulsars: B0823+26, B0834+06, B1237+25, B1929+10, and B201…
The high brightness temperature of B0529+483 revealed by RadioAstron and implications for interstellar scattering
S. V. Pilipenko, Y. Y. Kovalev, A. S. Andrianov +22
The high brightness temperatures, K, detected in several active galactic nuclei by RadioAstron space VLBI observations challenge theoretical limits. R…
Software correlator for Radioastron mission
S. F. Likhachev, V. I. Kostenko, I. A. Girin +3
In this paper we discuss the characteristics and operation of Astro Space Center (ASC) software FX correlator that is an important component of space-ground interferometer for Radi…
PSR B0329+54: Substructure in the scatter-broadened image discovered with RadioAstron on baselines up to 330,000 km
M. V. Popov, N. Bartel, C. R. Gwinn +13
We have resolved the scatter-broadened image of PSR B0329+54 and detected substructure within it. These results are not influenced by any extended structure of a source but instead…
Interstellar scintillations of PSR B1919+21: space-ground interferometry
V. I. Shishov, T. V. Smirnova, C. R. Gwinn +4
We carried out observations of pulsar PSR B1919+21 at 324 MHz to study the distribution of interstellar plasma in the direction of this pulsar. We used the RadioAstron (RA) space r…
Preliminary results of giant pulse investigations from Crab pulsar with Radioastron
Alexey Rudnitskiy, Mikhail Popov, Vladimir Soglasnov
Giant pulses from Crab pulsar were observed together with Radioastron space radiotelescope, Global EVN radio telescopes and Kvazar-KVO VLBI stations to study the scattering effects…