• A
  • A
  • A
  • ABC
  • ABC
  • ABC
  • А
  • А
  • А
  • А
  • А
Regular version of the site
Of all publications in the section: 32
Sort:
by name
by year
Article
Zhukova E. I., Malova H., V. Yu. Popov et al. Cosmic Research. 2017. Vol. 55. No. 6. P. 417-425.
Added: Jul 19, 2018
Article
Aksenov S. A., Bober S. A. Cosmic Research. 2018. Vol. 56. No. 2. P. 144-150.

A procedure has been proposed for calculating limited orbits around the L2 libration points of the Sun–Earth system. The motion of a spacecraft in the vicinity of the libration point has been considered a superposition of three components, i.e., decreasing (stable), increasing (unstable), and limited. The proposed procedure makes it possible to correct the state vector of the spacecraft so as to neutralize the unstable component of the motion. Using this procedure, the calculation of orbits around various types of libration points has been carried out and the dependence on the orbit type on the initial conditions has been studied.

Added: Mar 14, 2018
Article
Bespalov P. A., Misonova V. Cosmic Research. 2017. Vol. 55. No. 1. P. 67-71.

We consider the formation of small-scale nonstationary plasma structures in the region of relatively strong field-aligned electric currents. The formation of these structures has been shown to be associated with the density instability developed when the current velocity exceeds a critical value. The conditions for the development of this instability can be most favorable in the region of low-density plasma. Numerical calculations have been performed for the initial nonlinear stage of the structure development. The main parameters of the structure, i.e., the times of its formation and destruction, spatial scales, and electric field, have been estimated. The features of the structures are consistent with the existing data from space experiments in the region of auroral field-aligned currents of the Earth.

Added: Feb 14, 2018
Article
Bespalov P., 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, which are associated with electrical pulses, are determined. An expression for radial diffusion is obtained. The functional form and radial diffusion coefficient are compared with those known from Jovian magnetosphere experimental data.

Added: Sep 19, 2016
Article
Bespalov P. A., Misonova V. Cosmic Research. 2018. Vol. 56. No. 1. P. 26-31.

The results of numerical solution of the wave equations for the oblique incidence of whistling electromagnetic waves upon the night ionosphere from above have been obtained and analyzed. In the studied region of altitudes, within the wavelength scale, charged particle concentration varies drastically, and damping caused by collisions between the charged and neutral particles decreases considerably. Below, the sharp lower boundary of the ionosphere, the refractive index of the whistler wave approaches unity, and plasma turbulence transform into atmospheric electromagnetic waves. The dependences of the whistler reflection factor are found in terms of energy and horizontal magnetic component of the electromagnetic wave near the Earth's surface on the frequency and the wave vector transverse component for the plain-layered medium model at two values of latitude. Strong dependences have been found on the wave angle of incidence and frequency. At rather small angles of incidence, the wave disturbances reach the Earth's surface, and the module of reflection coefficient logarithm is in the range of 0.4-1. At large angles of incidence, the reflection coefficient module varies over a wide range depending on specific conditions. The obtained results explain the absence of oscillation modes of plasma magnetosphere maser in the night magnetosphere.

Added: Feb 14, 2018
Article
Vil'ke V., Chumachenko E. N., Dunham D. W. et al. Cosmic Research. 2013. Vol. 51. No. 4. P. 315-318.

We consider the problem of forming a coupling of two asteroids and of its further motion.

Added: Oct 29, 2013
Article
O.N.Savina, Bespalov P. 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. Estimations have shown that under the current jet on the ground surface electromagnetic signals on modulation frequencies can be two orders of magnitude larger than at middle latitudes due to modulated electron temperature and density. The effect of signals from the modulated equatorial current jet on the modes of operation of the plasma magnetospheric maser in VLF waveband is considered. The resonance modification of the spectra of natural electromagnetic waves of VLF range in the magnetosphere is shown to be possible.

Added: Jan 19, 2015
Article
Burov A.A., German A., Kosenko I. Cosmic Research. 2014. Vol. 52. No. 4. P. 289-294.

The problem of planar oscillations of a pendulum with variable length suspended on the Moon’s surface is considered. It is assumed that the Earth and Moon (or, in the general case, a planet and its satellite, or an asteroid and a spacecraft) revolve around the common center of mass in unperturbed elliptical Keplerian orbits. We discuss how the change in length of a pendulum can be used to compensate its oscillations. We wrote equations of motion, indicated a rule for the change in length of a pendulum, at which it has equilibrium positions relative to the coordinate system rotating together with the Moon and Earth. We study the necessary conditions for the stability of these motions. Chaotic dynamics of the pendulum is studied numerically and analytically.

Added: Nov 21, 2014
Article
Nazirov R., Zelenyi L., Prokhorenko V. Cosmic Research. 1996.
Added: Mar 29, 2013
Article
Malova H. V., Popov V., Khabarova O. V. et al. Cosmic Research. 2018. Vol. 56. No. 6. P. 462-470.

Within the self-consistent hybrid model based on the quasi-adiabatic approximation of the proton dynamics, a fine structure of strong current sheets (SCSs) in the solar wind has been investigated, including the heliospheric current sheet. The motion of electrons is fast and considered in the Boltzmann approximation. The simulation results have been shown that the SCS profiles have a multiscale enclosed structure with a narrow central current sheet that is enclosed in a wider sheet, similar to the heliospheric current sheet surrounded by the plasma sheet. The features of the SCS structure are determined by the relative contributions of the current of demagnetized protons in serpentine orbits and drift currents of electrons. The model predicts and describes the properties of SCSs observed by spacecraft. It has been shown that the multiscale structure of current sheets is an inherent intrinsic property of current sheets in the solar wind.

Added: Jan 12, 2019
Article
Маевский Е. В., Кислов Р. А., Малова Х. В. et al. Cosmic Research. 2018. Vol. 56. No. 6. P. 411-419.

Abstract—Within the axisymmetric MHD model of the solar wind, the magnetic field of the Sun has been analyzed in two phases of the solar cycle: the minimum activity, when the dipole magnetic field dominates and the maximum activity, when the quadrupole field predominates. It has been shown that during the period of maximum solar activity, the heliospheric current sheet acquires a conical shape and shifts to high latitudes up to 30° above the ecliptic plane. In the opposite hemisphere, at the same latitudes, a second current sheet of conical shape with an azimuth current of the opposite direction is established. It has been shown that the profiles of the main characteristics of the solar wind become steeper with distance from the Sun, and their amplitudes decrease, in this case, for the quadrupole field, the dependences of the main characteristics of the solar wind are more complex. A comparison of the results of the model with averaged characteristics of the solar wind shows a good match between the observed values and model parameters.

Added: Oct 5, 2019
Article
Maiewski E. V., Kislov R. A., Malova H. V. et al. Cosmic Research. 2018. Vol. 56. No. 6. P. 411-419.

Within the axisymmetric MHD model of the solar wind, the magnetic field of the Sun has been analyzed in two phases of the solar cycle: the minimum activity, when the dipole magnetic field dominates and the maximum activity, when the quadrupole field predominates. It has been shown that during the period of maximum solar activity, the heliospheric current sheet acquires a conical shape and shifts to high latitudes up to 30° above the ecliptic plane. In the opposite hemisphere, at the same latitudes, a second current sheet of conical shape with an azimuth current of the opposite direction is established. It has been shown that the profiles of the main characteristics of the solar wind become steeper with distance from the Sun, and their amplitudes decrease, in this case, for the quadrupole field, the dependences of the main characteristics of the solar wind are more complex. A comparison of the results of the model with averaged characteristics of the solar wind shows a good match between the observed values and model parameters.

Added: Jan 12, 2019
Article
Burov A. A., Guerman A., Nikonov V. Cosmic Research. 2019. Vol. 57. No. 4. P. 266-271.
Added: Oct 24, 2019
Article
Зелёный Л. М., Ледков А. А., Эйсмонт Н. А. Космические исследования. 2014. Т. 52. № 1. С. 1-13.
Added: Dec 7, 2015
Article
Аким Э., Архангельский Р., Зайко Ю. и др. Космические исследования. 2009. Т. 47. № 4. С. 332-342.
Added: Feb 21, 2013
Article
Ильин И., Заславский Г., Лавренов С. М. и др. Космические исследования. 2014. Т. 52. № 6. С. 1-13.
Added: Dec 23, 2014
Article
Вильке В. Г., Чумаченко Е. Н., Данхэм Д. У. и др. Космические исследования. 2013. Т. 51. № 3. С. 12-15.

The topical problem is an asteroid falling to the Earth. If one considers the Earth and asteroid as material points, then the probability of a collision is equal to zero for two points. If the Earth is considered to be a sphere, the probability for an asteroid trajectory to pass through the region occupied by the spherical Earth becomes nonzero though small value. When the asteroid approaches the Earth, in the sphere of Earth’s action one should take into account the influence of gravitational field of the Earth on the asteroid motion. There are three scenarios of further evolution of events. The first scenario suggests the asteroid fall to the Earth. In the second case the asteroid orbit changes its parameters, as a result of attraction of the Earth, but the asteroid will leave the Earth’s vicinity. In the third case the asteroid orbit is transformed into orbital motion around the Earth, as it takes place with the Moon. The latter case is referred to as asteroid capture by the Earth. Further evolution of the asteroid orbit depends on orbit parameters and is subject to influence of dissipative factors, for example, drag of the Earth’s upper atmosphere.

Added: Feb 11, 2014
Article
Беспалов П. А., Мизонова В. Г. Космические исследования. 2017. Т. 55. № 1. С. 69-74.

We consider the formation of small-scale nonstationary plasma structures in the region of relatively strong field-aligned electric currents. The formation of these structures has been shown to be associated with the density instability developed when the current velocity exceeds a critical value. The conditions for the development of this instability can be most favorable in the region of low-density plasma. Numerical calculations have been performed for the initial nonlinear stage of the structure development. The main parameters of the structure, i.e., the times of its formation and destruction, spatial scales, and electric field, have been estimated. The features of the structures are consistent with the existing data from space experiments in the region of auroral field-aligned currents of the Earth.

Added: Feb 14, 2018
Article
Буров А. А., Герман А. Д., Никонов В. И. Космические исследования. 2019. Т. 57. № 4. С. 283-289.
Added: Oct 24, 2019
Article
Дубинский А., Попель С.И. Космические исследования. 2019. Т. 57. № 2. С. 93-98.
Added: Feb 2, 2019
1 2