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Модель источника квазигармонических всплесков на пульсаре в Крабовидной туманности
Письма в Астрономический журнал. 2018. Т. 44. № 7. С. 483-498.
Железняков В. В.
A model for the source of microwave bursts from the Crab pulsar in the form of a current sheet
with a transversemagnetic field has been investigated. The emission generation mechanism is based on the
excitation of plasma waves at the double plasma resonance frequencies in a nonrelativistic nonequilibrium
plasma followed by their scattering into electromagnetic waves that escape from the current sheet into the
neutron star magnetosphere. The basic parameters of the source explaining the observed characteristics of
quasi-harmonic bursts in the interpulses of radio emission from this pulsar have been established.
Zheleznyakov V. V., Bespalov P. A., Astronomy Letters 2018 Vol. 44 No. 7 P. 442-456
A model for the source of microwave bursts from the Crab pulsar in the form of a current sheet
with a transversemagnetic field has been investigated. The emission generation mechanism is based on the
excitation of plasma waves at the double plasma resonance frequencies in a nonrelativistic nonequilibrium
plasma followed by their scattering into electromagnetic waves that escape ...
Added: October 19, 2018
Железняков В. В., Shaposhnikov V., Письма в Астрономический журнал 2022 Т. 48 № 10 С. 720-732
The propagation and conditions for the escape of microwave radio emission from the local
source of quasi-harmonic bursts that is a current sheet filled with an electron–proton or electron–positron
plasma have been studied in the geometrical optics approximation. A comparative analysis of these
corpuscular compositions has shown that in the electron–proton plasma, in contrast to the ordinary
component that ...
Added: January 26, 2023
Bespalov P. A., Savina O. N., Annales Geophysicae 2019 Vol. 37 P. 819-824
We examine specific features of the realisation of the beam pulse amplifier (BPA) mechanism of chorus excitation in the density ducts that have a width of the order of 100– 300 km with refractive reflection.The dispersion characteristics of whistler emissions in a planar duct under conditions for the fulfilment of the Wentzel–Kramers–Brillouin (WKB) approximation and ...
Added: October 10, 2019
СПб. : ООО "Издательство ВВМ", 2019
Сборник содержит доклады, представленные на XXIII Всероссийскую ежегодную конференцию по физике Солнца «Солнечная и солнечно-земная физика – 2019» (7 – 11 октября 2019 года, ГАО РАН, Санкт-Петербург). Конференция проводилась Главной (Пулковской) астрономической обсерваторией РАН при финансовой поддержке Российского фонда фундаментальных исследований (грант 19-02-20010), секции «Солнце» Научного совета по астрономии РАН и секции «Плазменные процессы в ...
Added: December 25, 2019
Bespalov P. A., O.N. Savina, Cosmic Research 2016 Vol. 54 No. 3 P. 194-197
In this paper, the radial diffusion of energetic electrons in the Jovian radiation belts is considered. It is noted that the influence of global resonance in the electron radiation belts on the ring current provides original electrical pulses in the middle magnetosphere. The values of the random transfer of energetic electrons across the magnetic shells, ...
Added: September 19, 2016
СПб. : Главная (Пулковская) астрономическая обсерватория РАН, 2013
Сборник содержит доклады, представленные на Всероссийской ежегодной кон- ференции «Солнечная и солнечно-земная физика – 2013» (XVII Пулковская конферен- ция по физике Солнца, 25–27 сентября 2013 года, Санкт-Петербург, ГАО РАН) – при- соединенного симпозиума к Всероссийской конференции «Многоликая Вселенная» (ВАК-2013). Конференция проводилась Главной (Пулковской) астрономической обсер- ваторией РАН при поддержке секции «Солнце» Научного совета по астрономии ...
Added: March 12, 2014
Абрамов-Максимов В. Е., Bakunina I. A., Известия Крымской астрофизической обсерватории 2021 Т. 117 № 1 С. 38-43
We present a study of the spatial distribution of quasi-periodic oscillations (QPO) of microwave emission in two active regions before M-class flares. We considered two cases: NOAA 11283 on September 6 and NOAA 11302 on September 25, 2011. We used daily observations on the Nobeyama radio heliograph (NoRH) at a frequency of 17 GHz. In both cases, preflare ...
Added: March 24, 2022
O.N.Savina, Bespalov P. A., Cosmic Research 2015 Vol. 53 No. 1 P. 74-79
The nonlinear response of the equatorial current jet to external actions is considered, as well as
some geophysical effects produced by it. Irradiating the current jet by shortwave electromagnetic radiation
with amplitude modulation in ranges of VLF emission and geomagnetic pulsations, one can provide for con
ditions when a nonlinear antenna is realized in the current jet region. ...
Added: January 19, 2015
Bespalov P. A., Savina O. N., Annales Geophysicae 2018 Vol. 36 No. 5 P. 1201-1206
A beam pulsed amplifier mechanism responsible for effective amplification of short very low
frequency (VLF) electromagnetic pulses is proposed. Effective amplification near the magnetic
equator outside the plasmasphere is considered. A conditional growth rate of short electromagnetic
pulses is calculated. Obtained results can explain some important features of the oblique
electromagnetic chorus emissions without hiss-like radiation background. ...
Added: October 19, 2018
Могилевский М. М., Чугунин Д. В., А. А. Чернышов et al., Письма в Журнал экспериментальной и теоретической физики 2022 Т. 115 № 9-10 С. 636-641
The electromagnetic fields measured on the ERG satellite are presented and their comparative analysis with measurements on the WIND satellite is carried out. The possibility of capturing auroral kilometric radiation (AKR) into plasma channels, which was first discovered on the ISEE satellite, has been confirmed. Plasma inhomogeneities, formed with an increase in geomagnetic activity, are ...
Added: June 20, 2023
D.R. Shklyar, Balikhin M. A., JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 2017 Vol. 122 P. 10072-10083
Equatorial noise in the frequency range below the lower hybrid resonance frequency, whose structure is shaped by high proton cyclotron harmonics, has been observed by the Cluster spacecraft. We develop a model of this wave phenomenon which assumes (as, in general, has been suggested long ago) that the observed spectrum is excited due to loss ...
Added: November 24, 2017
Попель С.И., Морозова Т. И., Физика плазмы 2017 Т. 43 № 5 С. 474-484
The wave processes that take place under the interaction of the Earth’s magnetosphere with dusty plasma near the lunar surface are considered. It is shown that the waves can be excited for the photoelectron parameters corresponding to the quantum yield of the lunar regolith reported by Willis et al. [Photon and Particle Interactions with Surfaces ...
Added: January 12, 2018
S. I. Popel, Golub' A. P., L. M. Zelenyi, Physics of Plasmas 2023 Vol. 30 No. 4 Article 043701
Above the sunlit surface of Mercury, the properties and formation of dusty plasmas are investigated. It is demonstrated that the dusty plasmas are formed for subsolar angles exceeding approximately 76^o due to photoelectric and electrostatic processes. As a result, the dusty plasmas are present in the polar regions of Mercury, characterized by latitudes of about 70^o and above. The formation ...
Added: April 3, 2023
Litvinenko G. V., V. E. Shaposhnikov, Konovalenko A. A. et al., Icarus 2016 Vol. 272 P. 80-87
We investigate the dynamic spectra of the Sun and Jovian decametric radiation obtained by the authors with the radio telescopes UTR-2 and URAN-2 (Kharkov, Poltava, Ukraine). We focus on the similar structures that appear on the dynamic spectra of those objects: S-bursts, drifting pairs, absorption bursts and zebra patterns. Similarity in structures allows us to ...
Added: February 29, 2016
Zlotnik E. Y., V. E. Shaposhnikov, Zaitsev V. V., JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 2016 Vol. 121 No. 6 P. 5307-5318
The origin of a fine structure as quasi-harmonic parallel drifting stripes of enhanced brightness (zebra pattern) in the dynamic spectrum of Jovian kilometric radiation is discussed. A possible interpretation of the observed structure based on the effect of double plasma resonance (DPR) in the Jupiter magnetosphere is analyzed. It is shown that the observed features ...
Added: November 18, 2016
Титова Е. Е., Д.Р. Шкляр, Балихин М. А., Геомагнетизм и аэрономия 2017 Т. 57 № 6 С. 744-750
This work is devoted to the study of the generation of the equatorial noise—electromagnetic radiation below the LHR frequency observed near the equatorial plane of the magnetosphere at distances of ~4RE. According to accepted views, the generation of the equatorial noise is related to the instability of ring current protons. In this work, a logarithmic ...
Added: January 2, 2018
Железняков В. В., Злотник Е. Я., Зайцев В. В. et al., Успехи физических наук 2016 Т. 186 № 10 С. 1090-1116
The double plasma resonance effect is a phenomenon in which plasma waves in a magnetized
plasma show a sharp increase in instability when the upper hybrid frequency coincides
with a cyclotron harmonic frequency. a radiation mechanism associated with this effect
provides an explanation of the origin of the "zebra pattern" in radio spectra of
the Sun, ...
Added: November 18, 2016
Окубо Ю. undefined., Journal of Physics: Conference Series 2017 Vol. 804 No. 012036 P. 1-8
We investigate the existence and the orthogonality of the generalized Jack symmetric functions which play an important role in the AGT relations. We show their orthogonality by deforming them to the generalized Macdonald symmetric functions. ...
Added: October 26, 2017
Andrew G. Semenov, Zaikin A., Physical Review B: Condensed Matter and Materials Physics 2013 Vol. 88 No. 5 P. 054505-1-054505-10
We investigate the effect of interacting quantum phase slips on persistent current and its fluctuations in ultrathin superconducting nanowires and nanorings pierced by the external magnetic flux. We derive the effective action for these systems and map the original problem onto an effective sine-Gordon theory on torus. We evaluate both the flux dependent persistent current ...
Added: February 9, 2015
Slunyaev A., Кокорина А. В., Water Waves, Springer 2019 P. 1-20
The issue of accounting of the wave breaking phenomenon in direct numerical simulations of oceanic waves is discussed. It is emphasized that this problem is crucial for the deterministic description of waves, and also for the dynamical calculation of extreme wave statistical characteristics, such as rogue wave height probability, asymmetry, etc. The conditions for accurate ...
Added: October 13, 2019
Marshakov A., Миронов А. Д., Морозов А. Ю., Journal of Geometry and Physics 2011 Vol. 61 P. 1203-1222
We present a summary of current knowledge about the AGT relations for conformal blocks with additional insertion of the simplest degenerate operator, and a special choice of the corresponding intermediate dimension, when the conformal blocks satisfy hypergeometric-type differential equations in position of the degenerate operator. A special attention is devoted to representation of conformal block ...
Added: February 28, 2013
Min Namkung, Younghun K., Scientific Reports 2018 Vol. 8 No. 1 P. 16915-1-16915-18
Sequential state discrimination is a strategy for quantum state discrimination of a sender’s quantum
states when N receivers are separately located. In this report, we propose optical designs that can
perform sequential state discrimination of two coherent states. For this purpose, we consider not
only binary phase-shifting-key (BPSK) signals but also general coherent states, with arbitrary prior
probabilities. Since ...
Added: November 16, 2020
Prazdnichnykh A., Glazov M., Ren L. et al., Physical Review B: Condensed Matter and Materials Physics 2021 Vol. 103 No. 8 P. 085302-1-085302-12
The exciton valley dynamics in van der Waals heterostructures with transition metal dichalcogenide monolayers is driven by the long-range exchange interaction between the electron and the hole in the exciton. It couples the states active in the opposite circular polarizations resulting in the longitudinal-transverse splitting of excitons propagating in the monolayer plane. Here we study ...
Added: March 5, 2021
Pelinovsky E., Didenkulova I., Rybkin A., Journal of Fluid Mechanics 2014 Vol. 748 P. 416-432
We present an exact analytical solution of the nonlinear shallow water theory for wave run-up in inclined channels of arbitrary cross-section, which generalizes previous studies on wave run-up for a plane beach and channels of parabolic cross-section. The solution is found using a hodograph-type transform, which extends the well-known Carrier–Greenspan transform for wave run-up on ...
Added: November 19, 2014