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Космические гамма-всплески: многоволновые исследования и модели
Письма в Астрономический журнал. 2021. Т. 47. № 12. С. 823–865.
Pozanenko A. S., Барков М. В., Минаев П. Ю., Вольнова А. А.
Ponomarev A., Aleksandrov N., Plasma Physics Reports 2026 Vol. 52 No. 3 P. 367–378
An approximate method for calculating drift velocity and other kinetic coefficients of heavy ions
in a light gas is generalized to gaseous mixtures. Obtained equations are used to calculate the mobilities of
and ions, as well as rate constants for inelastic ion–molecule processes with these ions in helium with
small additions of O2 under an electric field. Calculated ...
Added: April 27, 2026
Domrin V. I., Malova H. V., V. Yu. Popov et al., Cosmic Research 2026 Vol. 64 No. 2 P. 238–252
During magnetospheric perturbations a relatively thin current sheet with thickness about several
proton gyroradii forms in the Earth’s magnetotail. In a framework of the kinetic model describing current
sheet thinning in the magnetotail, the processes of its formation are investigated depending on the normal
magnetic field magnitude which affects both the current sheet structure and particle dynamics within ...
Added: April 27, 2026
Tsareva O. O., Malova H. V., V. Yu. Popov et al., Plasma Physics Reports 2026 Vol. 52 No. 2 P. 179–185
The influence of asymmetry of plasma sources on the structure and spatial localization of a superthin
current sheet (STCS) supported by demagnetized electrons is studied using a self-consistent model. The
simulation takes into account the presence of a single plasma source in the northern hemisphere, which
makes the plasma flow asymmetric. It is demonstrated that the asymmetry of ...
Added: April 27, 2026
П.А.Беспалов, О.Н. Савина, Геомагнетизм и аэрономия 2025 Т. 65 № 5 С. 620–628
Several basic models of frequency dynamics in quasi-periodic VLF emissions with spectral form repetition
periods from 10 to 300 s are considered. In all cases, we are talking about manifestations of cyclotron instability
of electron radiation belts thet are well described within the framework of the plasma magnetospheric maser
theory based an the averaged self-consistent system of quasi-linear ...
Added: April 25, 2026
Bondarenko G.G., Fisher M. R., Kristya V. I., Bulletin of the Russian Academy of Sciences: Physics 2026 Vol. 90 No. 4 P. 572–576
A model of the cathode layer of a glow gas discharge with a thin dielectric film on a fraction of the
cathode’s working surface is formulated. It is shown that a glow discharge most rapidly transits to an arc discharge,
accompanied by a significant increase in discharge current density and a decrease in cathode voltage
drop, if the ...
Added: April 25, 2026
Kychkin A., Chernitsin I., Прикладная информатика 2026 Т. 21 № 1 С. 40–58
The results of the development of a software microservice embedded in atmospheric air quality monitoring systems to support the identification of industrial pollution sources are presented. The emission and subsequent spread of harmful substances in the lower layers of the atmosphere is dynamic and characterized by high uncertainty due to the specific features of technological ...
Added: April 23, 2026
Zadkov V., Plasmonics 2026 Vol. 21 P. 1503–1512
Plasmonic nanostructures typically exhibit shifts in their resonant wavelength in response to changes in the refractive index of the surrounding medium. This limits their applications in scenarios requiring stable optical resonances. Here we present a metallic-dielectric hybrid metasurface that exhibits stable multi-wavelength resonance even if the refractive index of its surrounding varies. To quantitatively evaluate the stability of ...
Added: April 22, 2026
Shchur L., Antonov D., Burovski E., International Journal of Bifurcation and Chaos in Applied Sciences and Engineering 2026 P. 1–9
We present a simple model that simulates the possible influence of one society on another. Specifically, two societies evolve deterministically according to the well-known Nowak-May spatial game with the addition of mutual influence through connections that reflect the current states of the societies. This may be related to the influence of a global information resource ...
Added: April 20, 2026
Qin X., Deng Y., Shchur L. et al., / Series arXiv "math". 2026. No. 2603.02962.
We perform a Monte Carlo analysis of the Ising model on many three-dimensional lattices. By means of finite-size scaling we obtain the critical points and determine the scaling dimensions. As expected, the critical exponents agree with the three-dimensional Ising universality class for all models. The irrelevant field, as revealed by the correction-to-scaling amplitudes, appears to ...
Added: April 20, 2026
Pilé I., Deng Y., Shchur L., / Series arXiv "math". 2026. No. 2604.10254.
We investigate the spatial overlap of successive spin configurations in Markov chain Monte Carlo simulations using the local Metropolis algorithm and the Svendsen-Wang and Wolff cluster algorithms. We examine the dynamics of these algorithms for two models in different universality classes: the Ising model and the Potts model with three components. The overlap of two ...
Added: April 20, 2026
Kalikin N., Брандышев П. Е., Budkov Y., Journal of Chemical Physics 2026 Vol. 164 Article 154904
This study presents a mean-field theory for zwitterionic polymer solutions confined within attractive slit-like nanopores. Building upon our prior model for self-coacervation [Budkov et al., Soft Matter 19, 3281–3289 (2023)], we demonstrate that strong electrostatic dipole–dipole correlations between monomeric units, coupled with attraction to pore walls, can induce capillary-driven liquid–liquid phase separation inside the pore—a ...
Added: April 18, 2026
Moiseev E., Масютин Д. А., Мельниченко И. А. et al., Optics and Laser Technology 2025 Vol. 201 No. 115289 P. 1–5
Lasing at a wavelength near 255 nm is demonstrated in AlGaN whispering gallery mode microlasers with radii ranging from 1 to 3 µm fabricated on sapphire substrates, representing one of the shortest-wavelength realizations of microdisk lasers on this technologically relevant platform. The minimum threshold energy was 8.8 pJ (power density ≈ 280 kW/cm2) for a microlaser with a ...
Added: April 18, 2026
A. V. Pereskokov, Theoretical and Mathematical Physics 2026 Vol. 226 No. 3 P. 470–484
We consider the spectral problem for a hydrogen atom in orthogonal electric and magnetic fields with
an additional self-consistent field. We obtain an asymptotic expansion of self-consistent energy levels.
We find an asymptotic expansion of asymptotic eigenfunctions near the sphere |q| = 2. We calculate the
asymptotics of their norm in the space L2(R3). ...
Added: April 12, 2026
Anna S. Bodrova, Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 2026 Vol. 113 No. 4 Article 045403
We investigate the diffusion coefficients and mean-squared displacements in a polydisperse granular gas in
a homogeneous cooling state by considering the roughness of the particles. We study their dependence on the
normal and tangential restitution coefficients. We show that the motility of particles is strongly affected by their
mechanical properties and surface characteristics. ...
Added: April 5, 2026
Рощин Д. Е., Патлажан С. А., Кравченко И. В. et al., Коллоидный журнал 2026 Т. 88 № 3
В работе экспериментально и методами численного моделирования исследованы особенности деформационной динамики вязкоупругих капель растворов полиакрилонитрила (ПАН) в диметилсульфоксиде (ДМСО) при течении в силиконовом масле в канале с резким сужением. Основное внимание сосредоточено на изучении влияния концентрации ПАН и капиллярного числа на деформационное поведение и устойчивость таких капель. Показано, что увеличение концентрации ПАН приводит к существенному ...
Added: April 1, 2026
S. O. Belkin, A. S. Pozanenko, Astronomy Letters 2024 Vol. 50 No. 12 P. 701 – 731
We present the most complete up-to-date sample of supernovae associated with gamma-ray bursts (GRB-SNe) for which the peak time of the SN light curve and the peak absolute magnitude have been found. The sample contains 44 SNe. We have searched for correlations between the parameters of the GRB-SN $$V$$-band brightness peak (the rest-frame $$V$$-band absolute magnitude $$M_{V}$$) and ...
Added: February 20, 2026
Mozgunov G., Pozanenko A. S., Minaev P. Y. et al., , in: Data Analytics and Management in Data Intensive Domains: 25th International Conference, DAMDID/RCDL 2023, Moscow, Russia, October 24–27, 2023, Revised Selected PapersVol. 2086: Communications in Computer and Information Science.: Springer, 2024. P. 215–224.
Added: January 31, 2025
Minaev P. Y., A.S. Pozanenko, Grebenev S. A. et al., Astronomy Letters 2024 Vol. 50 No. 1 P. 1–24
The results of a study of the short gamma-ray burst GRB 231115A in the X-ray and gamma-ray ranges are presented, based on data from the INTEGRAL and Fermi space observatories. The source of the burst is localized by the IBIS/ISGRI telescope of INTEGRAL observatory with an accuracy of ${≤}1.\!\!^'5$, it is located in the Cigar ...
Added: January 31, 2025
Derkach D., Hushchyn M., Samorodova E. et al., Astronomical Society of the Pacific: Conference Series 2024 Vol. 535
In this study, we apply shallow neural networks, bayesian neural networks, and normalizing flows to approximate light curves of astronomical objects. The study shows that the approximation quality of the proposed methods outperform the existing ap- proaches based on Gaussian processes. We assess the quality of solution using two physics-motivated analyses: supernovae type Ia classification ...
Added: January 8, 2025
Панков Н. С., Pozanenko A. S., Belkin S. et al., , in: Data Analytics and Management in Data Intensive Domains: 25th International Conference, DAMDID/RCDL 2023, Moscow, Russia, October 24–27, 2023, Revised Selected PapersVol. 2086: Communications in Computer and Information Science.: Springer, 2024. P. 225–245.
We present the software aware for automatic scheduling the observations with the ground based network of optical telescopes GRB-IKI-FuN (extendable on other facilities). It was designed to provide the optimal coverage of large uncertainty contours of LIGO/Virgo/KAGRA (LVK) gravitational wave events, and gamma-ray bursts (GRBs), detected by space missions, which is crucial for fast look-up ...
Added: October 9, 2024
N. S. Pankov, A. S. Pozanenko, Minaev P. Y. et al., Astronomy Letters 2023 Vol. 49 No. 3 P. 81 – 109
We present the results of our analysis of multiwavelength observations for the long gamma-ray burst GRB 200829A. The burst redshift z≈1.29±0.04 has been determined photometrically at the afterglow phase. In gamma rays the event is one of the brightest (in isotropic equivalent), Eiso≳1054 erg. The multicolor light curve of the GRB 200829A afterglow is characterized ...
Added: June 13, 2024
Belkin S., Pozanenko A. S., Minaev P. Y. et al., Monthly Notices of the Royal Astronomical Society 2024 Vol. 527 No. 4 P. 11507–11520
We present full photometric coverage and spectroscopic data for soft gamma-ray burst GRB 201015A with a redshift z = 0.426. Our data span a time range of 85 d following the detection of GRB. These observations revealed an underlying supernova SN 201015A with a maximum at 8.54±1.48 d (rest frame) and an optical peak absolute ...
Added: May 20, 2024
Pankov N.S., Pozanenko A. S., Minaev P. Y. et al., Astronomy Letters 2023 Vol. 49 No. 3 P. 81–109
We present the results of our analysis of multiwavelength observations for the long gamma-ray burst GRB 200829A. The burst redshift z≈1.29±0.04 has been determined photometrically at the afterglow phase. In gamma rays the event is one of the brightest (in isotropic equivalent), Eiso≳1054 erg. The multicolor light curve of the GRB 200829A afterglow is characterized by chromatic ...
Added: January 30, 2024
Oganesyan G., Karpov S., Salafia O. S. et al., NATURE ASTRONOMY 2023 Vol. 7 P. 843–855
Long gamma-ray bursts are produced by energy dissipation within ultra-relativistic jets launched by newborn black holes after the collapse of a peculiar class of massive stars. Right after the luminous and highly variable gamma-ray emission, a multi-wavelength afterglow is released by external dissipation of the jet energy in the medium that surrounds the progenitor star. ...
Added: June 8, 2023