1.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National Academy of Sciences of UkraineUA148 papers
- V. N. Karazin Kharkiv National UniversityUA83 papers
- Jilin UniversityCN46 papers
- Centre National de la Recherche ScientifiqueFR27 papers
- Observatoire de ParisFR22 papers
- State Key Laboratory on Integrated OptoelectronicsCN22 papers
- O.Ya. Usikov Institute for Radiophysics and ElectronicsUA20 papers
- Space Research InstituteRU20 papers
- Austrian Academy of SciencesAT18 papers
- Laboratoire d’études spatiales et d’instrumentation en astrophysiqueFR18 papers
- Bar-Ilan UniversityIL15 papers
- Technion – Israel Institute of TechnologyIL14 papers
29 papers · 1 filter
All-dielectric metasurfaces with trapped modes: group-theoretical description
Pengchao Yu, Anton S. Kupriianov, Victor Dmitriev +1
An all-dielectric metasurface featuring resonant conditions of the trapped mode excitation is considered. It is composed of a lattice of subwavelength particles which are made of a…
Solar bursts as can be observed from the lunar farside with a single antenna at very low frequencies
A. A. Stanislavsky, A. A. Konovalenko, S. N. Yerin +10
Earth-based observations are complicated by the opacity of Earth's ionosphere at very low frequencies and strong man-made radio frequency interference. This explains long standing…
Solar type III bursts with high-frequency cut-off
A. A. Stanislavsky
New results in the study of solar type III bursts observed with the UTR-2 radio telescope are presented. The main feature of these bursts is a high-frequency cut-off. The solar act…
Revisiting the frequency drift rates of decameter type III solar bursts observed in July-August 2002
A. A. Stanislavsky, A. A. Konovalenko, E. P. Abranin +4
Estimating for the frequency drift rates of type III solar bursts is crucial for characterizing their source development in solar corona. According to Melnik et al. (Solar Phys. 26…
Bright lenses are easy to find: Spectroscopic confirmation of lensed quasars in the Southern Sky
C. Spiniello, A. Agnello, A. V. Sergeyev +4
Gravitationally lensed quasars are valuable, but extremely rare, probes of observational cosmology and extragalactic astrophysics. Progress in these fields has been limited just by…
Deuterated methyl mercaptan (CHSD): Laboratory rotational spectroscopy and search toward IRAS 16293-2422 B
Olena Zakharenko, Frank Lewen, Vadim V. Ilyushin +4
Methyl mercaptan (also known as methanethiol), CH3SH, has been found in the warm and dense parts of high -- as well as low -- mass star-forming regions. The aim of the present stud…
Controlling high-Q trapped modes in polarization-insensitive all-dielectric metasurfaces
Andrey Sayanskiy, Anton S. Kupriianov, Su Xu +4
We reveal peculiarities of the trapped (dark) mode excitation in a polarization-insensitive all-dielectric metasurface, whose unit super-cell is constructed by particularly arrangi…
Lossless and loss-induced topological transitions of isofrequency surfaces of a composite magnetic-semiconductor medium
Volodymyr I. Fesenko, Vladimir R. Tuz
Topological transitions of isofrequency surfaces of a composite magnetic-semiconductor structure influenced by an external static magnetic field are studied in the long-wavelength…
Jet propagation velocity and environment density of giant radio sources with steep radio spectrum
Alla Miroshnichenko
Before we have determined that giant radio structure is typical for steep-spectrum sources detected with Ukrainian T-shaped Radio Telescope of model 2 (UTR-2). To estimate the jet…
Simulation of Focusing Effect of Traveling Ionospheric Disturbances on Meter-Decameter Solar Dynamic Spectra
Artem Koval, Yao Chen, Aleksander Stanislavsky +2
For the first time we present simulation results of the focusing effect of the ionospheric plasma density irregularities, namely, Medium Scale Traveling Ionospheric Disturbances (M…
KiDS0239-3211: A new gravitational quadruple lens candidate
A. Sergeyev, C. Spiniello, V. Khramtsov +5
We report the discovery of a candidate to quadrupole gravitationally lensed system KiDS0239-3211 based on the public data release 3 of the KiDS survey and machine learning techniqu…
Halos in Dark Ages: formation and chemistry
Bohdan Novosyadlyj, Valerii Shulga, Wei Han +2
Formation of halos in the Dark Ages from initial spherical perturbations is analyzed in a four component Universe (dark matter, dark energy, baryonic matter and radiation) in the a…
Spectroscopic follow-up of double quasar candidates
V. N. Shalyapin, A. V. Sergeyev, L. J. Goicoechea +1
We report the results of an optical spectroscopic follow-up of four double quasar candidates in the Sloan Digital Sky Survey (SDSS) database. SDSS J1617+3827 is most likely a lense…
Interferometric Observations of the Quiet Sun at 20 and 25 MHz in May 2014
V. N. Melnik, V. A. Shepelev, S. Poedts +3
Results of solar observations at 20 and 25 MHz by the UTR-2 (\textit{Ukrainian T-shaped Radio telescope of the second modification}) radio telescope in the interferometric session…
Replication of dissipative vortices modeled by the complex Ginzburg-Landau equation
Bogdan A. Kochetov, Vladimir R. Tuz
Dissipative vortices are stable two-dimensional localized structures existing due to balance between gain and loss in nonlinear systems far from equilibrium. Being resistant to the…
Scalar perturbations in cosmological models: the cosmic screening approach
Ozgur Akarsu, Ruslan Brilenkov, Maxim Eingorn +2
We investigate cosmological perturbations for nonlinear models within the cosmic screening approach. Matter is considered both in the form of a set of discrete point-like ma…
Resonance nonlinear reflection from neutron star and additional radiation components of Crab pulsar
V. M. Kontorovich, I. S. Spevak, V. K. Gavrikov
Additional high-frequency components of the pulsar radiation in Crab Nebula are considered as a result of the resonance with the surface electromagnetic wave at nonlinear reflectio…
KiDS-SQuaD: The KiDS Strongly lensed Quasar Detection project
C. Spiniello, A. Agnello, N. R. Napolitano +11
New methods have been recently developed to search for strong gravitational lenses, in particular lensed quasars, in wide-field imaging surveys. Here, we compare the performance of…
The structure and stability of orbits in Hoag-like ring systems
Elena Yu. Bannikova
Ring galaxies are amazing objects exemplified by the famous case of the Hoag's Object. Here the mass of the central galaxy may be comparable to the mass of the ring, making it a di…
Dynamics and formation of obscuring tori in AGNs
Elena Yu. Bannikova, Alexey V. Sergeyev
We considered the evolution of a self-gravitating clumpy torus in the gravitational field of the central mass of an active galactic nucleus (AGN) in the framework of the N-body pro…
Decameter Type IV Burst Associated with a behind-the-limb CME Observed on 7 November 2013
V. N. Melnik, A. I. Brazhenko, A. A. Konovalenko +5
We report on the results of observations of a type IV burst by URAN-2 (Ukrainian Radio interferometer of Academy Scienses) in the frequency range 22 - 33 MHz, which is associated w…
Dispersion features of complex waves in a graphene-coated semiconductor nanowire
Pengchao Yu, Volodymyr I. Fesenko, Vladimir R. Tuz
Dispersion features of a graphene-coated semiconductor nanowire operating in the terahertz frequency band are consistently studied in the framework of a special theory of complex w…
Decameter Type III Bursts with Changing Frequency Drift-Rate Signs
V. N. Melnik, A. I. Brazhenko, A. A. Konovalenko +10
We discuss properties of type III bursts which change sign of their drift rate from negative to positive and vice versa. Moreover such bursts may change sign of their drift rates m…
Decameter Type III-Like Bursts
V. N. Mel'Nik, A. A. Konovalenko, H. O. Rucker +6
We report the first observations of Type III-like bursts at frequencies 10 30 MHz. More than 1000 such bursts during 2002 2004 have been analyzed. The frequency drift of these burs…