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
43 papers · 1 filter
Polytropic stellar wind models with strongly localized heating
L. Westrich, B. Shergelashvili, H. Fichtner +1
Polytropic models of stellar winds remain to be useful tools because they allow for a simple description of the energy balance of the expanding plasma without explicitly specifying…
CoSEE-Cat: A Comprehensive Solar Energetic Electron event Catalogue obtained from combined in situ and remote-sensing observations from Solar Orbiter -- Catalogue description and first statistical results
A. Warmuth, F. Schuller, R. Gómez-Herrero +39
(abridged) The acceleration of particles at the Sun and their propagation through interplanetary space are key topics in heliophysics. Specifically, solar energetic electrons (SEEs…
Investigation of the rotational spectrum of CDOD and an astronomical search toward IRAS 162932422
V. V. Ilyushin, H. S. P. Müller, J. K. Jørgensen +8
Solar-type prestellar cores and protostars display large amounts of deuterated organic molecules. Recent findings on CHDOH and CDOH toward IRAS 16293-2422 suggest that even…
Ground Based Support of the Space Mission Parker Performed with Ukrainian Low Frequency Radio Telescopes
Vladimir Dorovskyy, Valentin Melnik, Anatolii Brazhenko
The purpose of this work is to demonstrate the effectiveness of ground-based support for space missions, primarily PSP, using large Ukrainian decameter radio telescopes. Another go…
Determination of the Solar Rotation Elements and Period from Ruđer Bošković's Sunspot Observations in 1777
D. Roša, D. Hržina, M. Husak +6
This paper focuses on the observations of sunspots made by Ruđer Bošković in 1777. We derived the expressions needed to calculate the elements of the Sun's rotation and period from…
Shock-wave radio probing of solar wind sources in coronal magnetic fields
A. Koval, M. Karlicky, A. Stanislavsky +3
The Space Weather effects in the near-Earth environment as well as in atmospheres of other terrestrial planets arise by corpuscular radiation from the Sun, known as the solar wind.…
Parker Solar Probe detects solar radio bursts related with a behind-the-limb active region
Aleksander A. Stanislavsky, Igor N. Bubnov, Artem A. Koval +1
The interpretation of solar radio bursts observed by Parker Solar Probe (PSP) in the encounter phase plays a key role in understanding intrinsic properties of the emission mechanis…
Observations of shock propagation through turbulent plasma in the solar corona
Eoin P. Carley, Baptiste Cecconi, Hamish A. Reid +14
Eruptive activity in the solar corona can often lead to the propagation of shock waves. In the radio domain the primary signature of such shocks are type II radio bursts, observed…
Solar Type U Burst Associated with a High Coronal Loop
V. V. Dorovskyy, V. N. Melnik, A. A. Konovalenko +2
An inverted U burst with equally developed ascending and descending branches observed by Giant Ukrainian Radio Telescope (GURT) on 18 April 2017 in meter wavelengths band is discus…
Properties of Type III and Type IIIb Bursts in the Frequency Band of 8-80 MHz during PSP Perihelion at the Beginning of April 2019
V. N. Melnik, A. I. Brazhenko, A. A. Konovalenko +4
Properties of type III and type IIIb bursts in the frequency band of 8-80 MHz observed by the radio telescopes Ukrainian Radio Interferometer of NASU-2 (URAN-2) (Poltava) and Giant…
Radio signature of a distant behind-the-limb CME on 2017 September 6
V. N. Melnik, H. O. Rucker, A. I. Brazhenko +5
We discuss properties of a Type IV burst, which was observed on 2017 September 6, as a result of the powerful flare X 9.3. At decameter wavelengths this burst was observed by the r…
A new class of discontinuous solar wind solutions
Bidzina M. Shergelashvili, Velentin N. Melnik, Grigol Dididze +6
A new class of one-dimensional solar wind models is developed within the general polytropic, single-fluid hydrodynamic framework. The particular case of quasi-adiabatic radial expa…
Rotational spectrum of isotopic methyl mercaptan, (13)CH3SH, in the laboratory and towards Sagittarius B2(N2)
V. V. Ilyushin, O. Zakharenko, F. Lewen +9
Methyl mercaptan (CH3SH) is a known interstellar molecule with abundances high enough that the detection of some of its minor isotopologues is promising. The present study aims at…
First observation of the solar Type III burst decay and its interpretation
Valentin N. Melnik, Alexandr A. Konovalenko, Sergey M. Yerin +6
A decay of Type III burst into two Type III bursts was registered during solar observations by GURT and URAN-2 radio telescopes on April 18, 2017. Such phenomenon was observed for…
Rotational spectroscopy of isotopic species of methyl mercaptan at millimeter and submillimeter wavelengths: CHSH
Olena Zakharenko, Frank Lewen, Vadim V. Ilyushin +9
Methyl mercaptan (CHSH) is an important sulfur-bearing species in the interstellar medium, terrestrial environment, and potentially in planetary atmospheres. The aim of the pre…
Direct Observations of Traveling Ionospheric Disturbances as Focusers of Solar Radiation: Spectral Caustics
Artem Koval, Yao Chen, Takuya Tsugawa +9
The solar radiation focusing effect is related to the specific phenomenon of propagation of the Sun-emitted HF and VHF waves through terrestrial ionosphere. This natural effect is…
Comparative analysis of solar radio bursts before and during CME propagation
G. Dididze, B. M. Shergelashvili, V. N. Melnik +5
As is well known, CME propagation often results in the fragmentation of the solar atmosphere on smaller regions of density (magnetic field) enhancement (depletion). It is expected…
Properties and magnetic origins of solar S-bursts
Brendan P. Clarke, Diana E. Morosan, Peter T. Gallagher +3
Context. Solar activity is often accompanied by solar radio emission, consisting of numerous types of solar radio bursts. At low frequencies (<100 MHz) radio bursts with short dura…
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…
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…
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…
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…
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…