Fomin I.V., Chervon S.V., Maharaj S.D. «Application of the Schrödinger equation in exact scalar field cosmology» Пространство, время и фундаментальные взаимодействия, № 2, с. 83-94 (2020)
We propose a new method of exact solutions construction for scalar field cosmology based on representation of the Einstein–Friedmann dynamic equations as Schrödinger-like one. This representation allows one to compare the solutions of quantum-mechanical and cosmological problems. On the other hand, this approach makes it possible to use the well-known form-invariant transformations of the Schrödinger equation to generate exact cosmological solutions. As an example of the application of this method, the use of the Darboux transformations in scalar field cosmology is considered. On the other hand, the presented methods make it possible to generalize the obtained solutions to multi-field cosmological models.
Пространство, время и фундаментальные взаимодействия, № 2, с. 83-94 (2020) | Рубрика: 18
Maigurova N.V., Pomazan A.V., Shulga A.V. «HIgh-precision follow-up observations of near-earth objects» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 216-219 (2018)
https://doi.org/10.18524/1810-4215.2018.31.144562
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 216-219 (2018) | Рубрика: 18
Maigurova N.V., Protsyuk Yu.I., Bondarchuk L.E. «Astrometric CCD observations of selected WDS multiple star systems» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 220-223 (2018)
https://doi.org/10.18524/1810-4215.2018.31.146198
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 220-223 (2018) | Рубрика: 18
Maigurova N.V., Protsyuk Yu.I. «Probabilities of physical link between the components of the selected multiple systems from WDS catalog» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 192-195 (2019)
https://doi.org/10.18524/1810-4215.2019.32.181603
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 192-195 (2019) | Рубрика: 18
Kaliuzhnyi M., Zhang Z., Bushuev F., Shulga O., Bezrukovs V., Reznichenko O., Melnychuk S., Malynovskyi Y. «Ongoing operation and perspectives of simple VLBI networks of geostationary satellites monitoring» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 148-150 (2019)
https://doi.org/10.18524/1810-4215.2019.32.181905
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 148-150 (2019) | Рубрика: 18
Bushuev F., Kaliuzhnyi M., Mazhaev O., Shulga O., Shakun L., Bezrukovs V., Reznichenko O., Moskalenko S., Malynovskyi Ye. «External comparison satellite positions obtained by the network of passive correlation ranging of geostationary telecommunication satellites» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 171-173 (2018)
https://doi.org/10.18524/1810-4215.2018.31.145360
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 171-173 (2018) | Рубрика: 18
Ala V., Demirbilek U., Mamedov K.R. «On the Exact Solutions to Conformable Equal width Wave Equation by Improved Bernoulli Sub-Equation Function Method» Вестник Южно-Уральского государственного университета. Серия: Математика. Механика. Физика, 13, № 3, с. 5-13 (2021)
Рассматривается согласованное равномощное волновое уравнение с целью нахождения его точного решения. Данное уравнение играет важную роль в физике и задает интересную модель определения изменяющихся волн со слабой нелинейностью. Целью работы является представление нового точного решения согласованного равномощного волнового уравнения. Для этого авторы используем эффективный метод, называемый усовершенствованным функциональным методом под-уравнения Бернулли (IBSEFM). На основе значений решений, двумерные и трехмерные графики и контурные поверхности строятся с привлечением математического программного обеспечения. Полученные результаты подтверждают, что IBSEFM является мощным математическим аппаратом для решения нелинейных согласованных уравнений в частных производных, возникающих в математической физике.
Вестник Южно-Уральского государственного университета. Серия: Математика. Механика. Физика, 13, № 3, с. 5-13 (2021) | Рубрика: 04.01
Manchenko L.D. «Model of gravitational effects in Saturn’s rings» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 168-170 (2019)
https://doi.org/10.18524/1810-4215.2019.32.182512
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 168-170 (2019) | Рубрика: 18
Kuratova A.K., Miroshnichenko A.S., Zharikov S.V., Manset N., Khokhlov S.A., Raj A., Kusakin A.V., Reva I.V., Kokumbaeva R.I., Usenko I.A., Knyazev A.Y. «Spectroscopic monitoring of the BE objects FSCMA and MOCAM» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 63-65 (2019)
https://doi.org/10.18524/1810-4215.2019.32.182100
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 63-65 (2019) | Рубрика: 18
Tvardovskyi D.E., Marsakova V.I., Andronov I.L., Shakun L.S. «Period variations and possible third components in the eclipsing binaries AH Tauri and ZZ Cassiopeiae» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 103-109 (2018)
https://doi.org/10.18524/1810-4215.2018.31.145280
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 103-109 (2018) | Рубрика: 18
Matevosyan A.A., Matevosyan A.G. «Parameter estimation for the oscillating systems» Ученые записки Ереванского государственного университета, физико-математических наук, 55, № 2, с. 131-140 (2021)
Было исследовано простое гармоническое движение вращательно-колебательной системы. Также исследовались затухание и вынужденные колебания системы, были произведены измерения. Тремя разными методами исследовался резонанс в колебательной системе и измерялся коэффициент качества (добротность) затухающей системы при различных параметрах затухания. При двух различных демпфирующих силах были построены резонансные кривые. Построена вероятностная модель и оценены параметры системы по резонансным кривым с использованием платформы для отбора Stan. При отсутствии дополнительной силы сопротивления, коэффициент качества (добротность) колебательной системы оценивалась в Q=71±1, а собственная частота – ω0=3,105±0,008 с–1.
Ученые записки Ереванского государственного университета, физико-математических наук, 55, № 2, с. 131-140 (2021) | Рубрика: 04.15
Matevosyan A.A., Matevosyan A.G. «Parameter estimation for the oscillating systems» Ученые записки Ереванского государственного университета, физико-математических наук, 55, № 2, с. 131-140 (2021)
Было исследовано простое гармоническое движение вращательно-колебательной системы. Также исследовались затухание и вынужденные колебания системы, были произведены измерения. Тремя разными методами исследовался резонанс в колебательной системе и измерялся коэффициент качества (добротность) затухающей системы при различных параметрах затухания. При двух различных демпфирующих силах были построены резонансные кривые. Построена вероятностная модель и оценены параметры системы по резонансным кривым с использованием платформы для отбора Stan. При отсутствии дополнительной силы сопротивления, коэффициент качества (добротность) колебательной системы оценивалась в Q=71±1, а собственная частота – ω0=3,105±0,008 с–1.
Ученые записки Ереванского государственного университета, физико-математических наук, 55, № 2, с. 131-140 (2021) | Рубрика: 04.15
Osmayev O.A., Shuvalova Yu S, Bronza E.S., Matvienko K.I. «Some corollary facts of the n-point gravitational lens equation in a complex form» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 29-32 (2019)
https://doi.org/10.18524/1810-4215.2019.32.182518
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 29-32 (2019) | Рубрика: 18
Bushuev F., Kaliuzhnyi M., Mazhaev O., Shulga O., Shakun L., Bezrukovs V., Reznichenko O., Moskalenko S., Malynovskyi Ye. «External comparison satellite positions obtained by the network of passive correlation ranging of geostationary telecommunication satellites» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 171-173 (2018)
https://doi.org/10.18524/1810-4215.2018.31.145360
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 171-173 (2018) | Рубрика: 18
Koshkin N., Shakun L., Korobeynikova E., Melikyants S., Strakhova S., Dragomiretsky V., Ryabov A., Golubovskaya T., Terpan S. «Monitoring of Space Debris Rotation Based on Photometry» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 179-185 (2018)
https://doi.org/10.18524/1810-4215.2018.31.147807
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 179-185 (2018) | Рубрика: 18
Koshkin N.I., Melikyants S., Korobeinikova E., Shakun L., Strakhova S., Kashuba V., Romanyuk Ya., Terpan S. «Simulation of the orbiting spacecraft to analysis and understand their rotation based on photometry» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 158-161 (2019)
https://doi.org/10.18524/1810-4215.2019.32.183899
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 158-161 (2019) | Рубрика: 18
Shepelev V.A., Melnik V.N., Vashchishin R.V. «Preliminary results of interferometric observations of the quiet Sun at the frequencies 8–32 MHz» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 159-162 (2018)
https://doi.org/10.18524/1810-4215.2018.31.144687
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 159-162 (2018) | Рубрика: 18
Kaliuzhnyi M., Zhang Z., Bushuev F., Shulga O., Bezrukovs V., Reznichenko O., Melnychuk S., Malynovskyi Y. «Ongoing operation and perspectives of simple VLBI networks of geostationary satellites monitoring» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 148-150 (2019)
https://doi.org/10.18524/1810-4215.2019.32.181905
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 148-150 (2019) | Рубрика: 18
Vasylenko M.Yu., Dobrycheva D.V., Vavilova I.B., Melnyk O.V., Elyiv A.A. «Verification of machine learning methods for binary morphological classification of galaxies from SDSS» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 46-51 (2019)
https://doi.org/10.18524/1810-4215.2019.32.182538
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 46-51 (2019) | Рубрика: 18
Oknyansky V.L, Shenavrin V.I., Metlova N.V., Gaskell C.M. «Additional support for relative wavelength independence of IR lags in NGC 4151 over the past decade» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 94-99 (2018)
https://doi.org/10.18524/1810-4215.2018.31.144622
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 94-99 (2018) | Рубрика: 18
Sidorchuk M.A., Vasilenko N.M., Ulyanov O.M., Konovalenko O.O., Mukha D.V., Abramenkov E.A., Sidorchuk K.M., Miasoied A.I. «50 years of research in continuum at the UTR-2 radio telescope» Радиофизика и радиоастрономия (Украина), 26, № 4, с. 287-313 (2021)
Purpose: The results of research in continuum decameter-wave radio emission of the Galaxy background, ionized hydrogen regions, supernova remnants, extragalactic discrete sources, extended galaxies, galactic clusters, extragalactic background are given. The aim of this work is reviewing the results achieved for over 50-years of the UTR-2 radiotelescope research of our Galaxy and its population, as well as extragalactic radio sources in the continuum radio emission spectrum at extremely low frequencies for the ground based observations. Design/methodology/approach: The review, analysis, collection of archival data in various publications related to the subjectof this work. Findings: The basic results of studying the ionized hydrogen regions, supernova remnants, Galaxy background emission and its large-scale structure are given, and the maps of these sources are obtained. The catalog of extragalactic discrete radio sources of the most Northern sky part and the cosmological conclusions based on its analysis are described; the estimate of the isotropic extragalactic background brightness temperature is obtained; for the first time, the observational results for the Andromeda galaxy and two galactic clusters Coma and A2255 are given briefly. Conclusions: All the results presented here emphasize the uniqueness and importance of research in the decameter wavelength range, and the large area, flexibility of structure, continuous improvement make the UTR-2 radio telescope an indispensable tool for solving the most important tasks of modern radio astronomy, despite its respectable age. For example, only in the range of 10 to 30 MHz the ionized part of the most common element in the universe, the hydrogen, becomes optically thick and begins to absorb the synchrotron emission on the line of sight, which allows rather easy separation of thermal and non-thermal components of radioemission. This property allows to determine the ionized hydrogen regions’ electron temperature and the electron concentration on the line of sight independently in studying the hydrogen emission regions. When studying the supernova remnants, we can determine the ionized matter location by their spectrum drops – before, inside or behind the remnant. Based on the HB3 supernova remnant radio imagies, an assumption was made on the existence of an ionized hydrogen relic shell aroundit, being caused by the initial ultraviolet flash of a supernova. For the first time, the maps of the Northern sky large-scale structure in the declination range from –15 to +85° at extremely low frequencies 10, 12.6, 14.7, 16.7, 20 and 25 MHz for the ground-based observations are published, which, besides their own scientific value, may allow to correct the UTR-2 radio telescope imaging results. Using the full-resolution UTR-2 maps and the developed method of multifrequency T–T diagrams, it was possible to separate the background radiation into galactic and extragalactic components and construct the spectrum of the latter. From the analysis of the most complete decameter wavelength range catalog of discrete sources, it follows that there is a gap in the redshift spatial distribution for all classes of extragalactic sources. The existence of an ionized hydrogen ring in the Andromeda Nebula disk has been suggested. It is shown that the main partof the galaxy clusters decameter-wave emission comes from haloes and relics.
Радиофизика и радиоастрономия (Украина), 26, № 4, с. 287-313 (2021) | Рубрики: 03 18
Usenko I.A., Miroshnichenko A.S., Danford S., Kovtyukh V.V., Turner D.G., Shulga A.V., Protsyuk Yu.I. «Spectroscopic investigations of galactic clusters with associated Cepheid variables. I. Polaris cluster and α Umi» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 113-116 (2018)
https://doi.org/10.18524/1810-4215.2018.31.145379
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 113-116 (2018) | Рубрика: 18
Usenko I.A., Kniazev A.Yu., Kovtyukh V.V., Mishenina T.V., Miroshnichenko A.S., Turner D.G., Protsyuk Yu.I. «Spectroscopic investigations of galactic clusters with associated Cepheid variables. II. NGC 5662 and V Cen» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 117-122 (2018)
https://doi.org/10.18524/1810-4215.2018.31.145381
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 117-122 (2018) | Рубрика: 18
Kuratova A.K., Miroshnichenko A.S., Zharikov S.V., Manset N., Khokhlov S.A., Raj A., Kusakin A.V., Reva I.V., Kokumbaeva R.I., Usenko I.A., Knyazev A.Y. «Spectroscopic monitoring of the BE objects FSCMA and MOCAM» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 63-65 (2019)
https://doi.org/10.18524/1810-4215.2019.32.182100
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 63-65 (2019) | Рубрика: 18
Usenko I.A., Miroshnichenko A.S., Danford S., Kovtyukh V.V. «Pulsational activity of the small–amplitude Cepheid Polaris (α UMi) IN 2018-2019» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 87-90 (2019)
https://doi.org/10.18524/1810-4215.2019.32.182238
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 87-90 (2019) | Рубрика: 18
Usenko I.A., Kniazev A.Yu., Katkov I.Yu., Kovtyukh V.V., Mishenina T.V., Miroshnichenko A.S., Turner D.G. «Spectroscopic investigations of galactic clusters with associated Cepheid variables. III. Collinder 394 and BB SGR» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 91-96 (2019)
https://doi.org/10.18524/1810-4215.2019.32.182233
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 91-96 (2019) | Рубрика: 18
Mishenina T., Usenko I., Kniazev A., Kovtyukh V. «Status refinement of metal-poor star HD 6268» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 84-89 (2018)
https://doi.org/10.18524/1810-4215.2018.31.145081
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 84-89 (2018) | Рубрика: 18
Shereta E., Carraro G., Gorbaneva T., Mishenina T. «Molybdenum abundance in some open clusters» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 100-102 (2018)
https://doi.org/10.18524/1810-4215.2018.31.144691
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 100-102 (2018) | Рубрика: 18
Mishenina T., Basak N., Kovtyukh V. «Chemical imprints in atmospheric abundances in planet-hosting stars» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 66-69 (2019)
https://doi.org/10.18524/1810-4215.2019.32.181736
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 66-69 (2019) | Рубрика: 18
Gorbaneva T.I., Mishenina T.V. «Hafnium abundances in FGK dwarf of galactic disk» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 75-77 (2018)
https://doi.org/10.18524/1810-4215.2018.31.144500
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 75-77 (2018) | Рубрика: 18
Mishenina T.V., Gorbaneva T.I. «Molybdenum and ruthenium in the Galaxy» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 78-83 (2018)
https://doi.org/10.18524/1810-4215.2018.31.145080
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 78-83 (2018) | Рубрика: 18
Usenko I.A., Kniazev A.Yu., Kovtyukh V.V., Mishenina T.V., Miroshnichenko A.S., Turner D.G., Protsyuk Yu.I. «Spectroscopic investigations of galactic clusters with associated Cepheid variables. II. NGC 5662 and V Cen» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 117-122 (2018)
https://doi.org/10.18524/1810-4215.2018.31.145381
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 117-122 (2018) | Рубрика: 18
Usenko I.A., Kniazev A.Yu., Katkov I.Yu., Kovtyukh V.V., Mishenina T.V., Miroshnichenko A.S., Turner D.G. «Spectroscopic investigations of galactic clusters with associated Cepheid variables. III. Collinder 394 and BB SGR» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 91-96 (2019)
https://doi.org/10.18524/1810-4215.2019.32.182233
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 91-96 (2019) | Рубрика: 18
Morozov A.N., Pustovoit V.I., Fomin I.V. «On the gravitational waves coupled with electromagnetic waves» Пространство, время и фундаментальные взаимодействия, № 2, с. 53-63 (2020)
A description is made of the process of excitation of coupled longitudinal-transverse gravitational waves during the propagation of a strong electromagnetic wave in a vacuum and when a standing electromagnetic wave exists in the Fabry–Perot resonator. It is shown that such waves lead to the appearance of transverse gravitational waves in empty space. It was established that two standing high-frequency electromagnetic waves in a Fabry-Perot resonator with close frequencies cause the appearance of a low-frequency transverse gravitational wave in empty space.
Пространство, время и фундаментальные взаимодействия, № 2, с. 53-63 (2020) | Рубрика: 18
Bushuev F., Kaliuzhnyi M., Mazhaev O., Shulga O., Shakun L., Bezrukovs V., Reznichenko O., Moskalenko S., Malynovskyi Ye. «External comparison satellite positions obtained by the network of passive correlation ranging of geostationary telecommunication satellites» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 171-173 (2018)
https://doi.org/10.18524/1810-4215.2018.31.145360
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 171-173 (2018) | Рубрика: 18
Sidorchuk M.A., Vasilenko N.M., Ulyanov O.M., Konovalenko O.O., Mukha D.V., Abramenkov E.A., Sidorchuk K.M., Miasoied A.I. «50 years of research in continuum at the UTR-2 radio telescope» Радиофизика и радиоастрономия (Украина), 26, № 4, с. 287-313 (2021)
Purpose: The results of research in continuum decameter-wave radio emission of the Galaxy background, ionized hydrogen regions, supernova remnants, extragalactic discrete sources, extended galaxies, galactic clusters, extragalactic background are given. The aim of this work is reviewing the results achieved for over 50-years of the UTR-2 radiotelescope research of our Galaxy and its population, as well as extragalactic radio sources in the continuum radio emission spectrum at extremely low frequencies for the ground based observations. Design/methodology/approach: The review, analysis, collection of archival data in various publications related to the subjectof this work. Findings: The basic results of studying the ionized hydrogen regions, supernova remnants, Galaxy background emission and its large-scale structure are given, and the maps of these sources are obtained. The catalog of extragalactic discrete radio sources of the most Northern sky part and the cosmological conclusions based on its analysis are described; the estimate of the isotropic extragalactic background brightness temperature is obtained; for the first time, the observational results for the Andromeda galaxy and two galactic clusters Coma and A2255 are given briefly. Conclusions: All the results presented here emphasize the uniqueness and importance of research in the decameter wavelength range, and the large area, flexibility of structure, continuous improvement make the UTR-2 radio telescope an indispensable tool for solving the most important tasks of modern radio astronomy, despite its respectable age. For example, only in the range of 10 to 30 MHz the ionized part of the most common element in the universe, the hydrogen, becomes optically thick and begins to absorb the synchrotron emission on the line of sight, which allows rather easy separation of thermal and non-thermal components of radioemission. This property allows to determine the ionized hydrogen regions’ electron temperature and the electron concentration on the line of sight independently in studying the hydrogen emission regions. When studying the supernova remnants, we can determine the ionized matter location by their spectrum drops – before, inside or behind the remnant. Based on the HB3 supernova remnant radio imagies, an assumption was made on the existence of an ionized hydrogen relic shell aroundit, being caused by the initial ultraviolet flash of a supernova. For the first time, the maps of the Northern sky large-scale structure in the declination range from –15 to +85° at extremely low frequencies 10, 12.6, 14.7, 16.7, 20 and 25 MHz for the ground-based observations are published, which, besides their own scientific value, may allow to correct the UTR-2 radio telescope imaging results. Using the full-resolution UTR-2 maps and the developed method of multifrequency T–T diagrams, it was possible to separate the background radiation into galactic and extragalactic components and construct the spectrum of the latter. From the analysis of the most complete decameter wavelength range catalog of discrete sources, it follows that there is a gap in the redshift spatial distribution for all classes of extragalactic sources. The existence of an ionized hydrogen ring in the Andromeda Nebula disk has been suggested. It is shown that the main partof the galaxy clusters decameter-wave emission comes from haloes and relics.
Радиофизика и радиоастрономия (Украина), 26, № 4, с. 287-313 (2021) | Рубрики: 03 18
Stepkin S.V., Konovalenko O.O., Vasylkivskyi Y.V., Mukha D.V. «Interstellar medium and decameter radio spectroscopy» Радиофизика и радиоастрономия (Украина), 26, № 4, с. 314-325 (2021)
Purpose: The analytical review of the main results of research in the new direction of the low-frequency radio astronomy, the interstellar medium radio spectroscopy at decameter waves, which had led to astrophysical discovery, recording of the radio recombination lines in absorption for highly excited states of interstellar carbon atoms (more than 600). Design/methodology/approach: The UTR-2 world-largest broadband radio telescope of decameter waves optimally connected with the digital correlation spectrum analyzers has been used. Continuous modernization of antenna system and devices allowed increasing the analysis band from 100 kHz to 24 MHz and a number of channels from 32 to 8192. The radio telescope and receiving equipment with appropriate software allowed to have a long efficient integration time enough for a large line series simultaneously with high resolution, noise immunity and relative sensitivity. Findings: A new type of interstellar spectral lines has been discovered and studied, the interstellar carbon radio recombination lines in absorption for the record high excited atoms with principal quantum numbers greater than 1000. The line parameters (intensity, shape, width, radial velocity) and their relation ship with the interstellar medium physical parameters have been determined. The temperature of line forming regions is about 100 K, the electron concentration up to 0.1 cm–3 and the size of a line forming region is about 10 pc. For the first time, radio recombination lines were observed in absorption. They have significant broadening and are amplified by the dielectronic-like recombination mechanism and are also the lowest frequency lines in atomic spectroscopy. Conclusions: The detected low-frequency carbon radio recombination lines and their observations have become a new highly effective tool for the cold partially ionized interstellar plasma diagnostics. Using them allows obtaining the information which is not available with the other astrophysical methods. For almost half a century of their research, a large amount of hardware-methodical and astrophysical results have been obtained including a record number of Galaxy objects, where there levant lines have been recorded. The domestic achievements have stimulated many theoretical and experimental studies in other countries, but the scientific achievements of Ukrainian scientists prove the best prospects for further development of this very important area of astronomical science.
Радиофизика и радиоастрономия (Украина), 26, № 4, с. 314-325 (2021) | Рубрика: 18
Mullo-Abdolov A., Relke H., Kokhirova G., Yuldoshev Q., Protsyuk Yu., Andruk V. «Progress in the realization of the project FON-Dushanbe catalogue» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 224-227 (2018)
https://doi.org/10.18524/1810-4215.2018.31.144606
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 224-227 (2018) | Рубрика: 18
Andruk V.M., Pakuliak L.K., Eglitis I., Yuldoshev Q., Mullo-Abdolov A., Shatokhina S.V., Yizhakevych O.M., Protsyuk Yu.I., Relke H., Akhmetov V.S., Muminov M.M., Ehgamberdiev Sh.A., Kokhirova G. «On the FON astroplate project accomplishment» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 185-188 (2019)
https://doi.org/10.18524/1810-4215.2019.32.181558
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 185-188 (2019) | Рубрика: 18
Yizhakevych O.M., Mullo-Abdolov A.Sh., Relke H.V., Kokhirova G.I., Pakuliak L.K., Andruk V.M. «First results of the searching of asteroids based on the data of FON-Dushanbe processed plates» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 247-250 (2018)
https://doi.org/10.18524/1810-4215.2018.31.144758
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 247-250 (2018) | Рубрика: 18
Shatokhina S.V., Yizhakevych O.M., Protsyuk, Yu.I., Kazantseva L.V., Pakuliak L.K., Eglitis I., Relke H., Yuldoshev Q.X., Mullo-Abdolov A.Sh., Andruk V.M. «On the "solar system small bodies" astroplate project of the Ukrainian virtual observatory» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 203-207 (2019)
https://doi.org/10.18524/1810-4215.2019.32.181732
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 203-207 (2019) | Рубрика: 18
Shatokhina S.V., Relke H., Yuldoshev Q., Andruk V.M., Protsyuk Yu.I., Muminov M. «Asteroids search results in digitized observations of the Northern Sky Survey project (Kitab part)» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 235-238 (2018)
https://doi.org/10.18524/1810-4215.2018.31.144679
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 235-238 (2018) | Рубрика: 18
Protsyuk Yu.I., Shukhratov Sh.Sh., Kovalchuk O.M., Muminov M.M., Yuldoshev Q.H., Abdurakhimov R.R., Andruk V.M. «Results of processing of CCD observations of selected open clusters on Maidanak» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 231-234 (2018)
https://doi.org/10.18524/1810-4215.2018.31.146275
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 231-234 (2018) | Рубрика: 18
Yizhakevych O.M., Andruk V.M., Yuldoshev Q., Pakuliak L.K., Muminov M.M. «The first results of processing observations of SS bodies from AI AS RUz photographic plate collection using the new technique» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 251-254 (2018)
https://doi.org/10.18524/1810-4215.2018.31.145078
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 31, с. 251-254 (2018) | Рубрика: 18
Andruk V.M., Pakuliak L.K., Eglitis I., Yuldoshev Q., Mullo-Abdolov A., Shatokhina S.V., Yizhakevych O.M., Protsyuk Yu.I., Relke H., Akhmetov V.S., Muminov M.M., Ehgamberdiev Sh.A., Kokhirova G. «On the FON astroplate project accomplishment» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 185-188 (2019)
https://doi.org/10.18524/1810-4215.2019.32.181558
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 185-188 (2019) | Рубрика: 18
Yuldoshev Q., Andruk V., Muminov M «The astrometric and photometric results of digitized plates on Epson expression 10000XL scanner with different resolutions» Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 208-210 (2019)
https://doi.org/10.18524/1810-4215.2019.32.181734
Публикации Одесской астрономической обсерватории (Odessa Astronomical Publications, Украина), 32, с. 208-210 (2019) | Рубрика: 18

