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  Subjects -> AERONAUTICS AND SPACE FLIGHT (Total: 120 journals)
Showing 1 - 30 of 30 Journals sorted alphabetically
Acta Astronautica     Hybrid Journal   (Followers: 495)
Advances in Aerospace Engineering     Open Access   (Followers: 70)
Advances in Aerospace Science and Technology     Open Access   (Followers: 8)
Advances in Astronautics Science and Technology     Hybrid Journal   (Followers: 1)
Advances in Space Research     Full-text available via subscription   (Followers: 458)
Aeronautical Journal, The     Hybrid Journal   (Followers: 13)
Aerospace     Open Access   (Followers: 60)
Aerospace Medicine and Human Performance     Full-text available via subscription   (Followers: 19)
Aerospace Science and Technology     Hybrid Journal   (Followers: 428)
Aerospace Scientific Journal     Open Access   (Followers: 18)
Aerospace Systems     Hybrid Journal   (Followers: 6)
Aerospace technic and technology     Open Access   (Followers: 3)
Aerotecnica Missili & Spazio : Journal of Aerospace Science, Technologies & Systems     Hybrid Journal   (Followers: 4)
AIAA Journal     Hybrid Journal   (Followers: 1194)
Air Force Magazine     Full-text available via subscription   (Followers: 10)
Air Medical Journal     Hybrid Journal   (Followers: 8)
Aircraft Engineering and Aerospace Technology     Hybrid Journal   (Followers: 264)
Annual of Navigation     Open Access   (Followers: 22)
Artificial Satellites     Open Access   (Followers: 23)
ASTRA Proceedings     Open Access   (Followers: 3)
Astrodynamics     Hybrid Journal   (Followers: 4)
Aviation     Open Access   (Followers: 17)
Aviation Advances & Maintenance     Open Access   (Followers: 5)
Aviation in Focus - Journal of Aeronautical Sciences     Open Access   (Followers: 10)
Aviation Psychology and Applied Human Factors     Hybrid Journal   (Followers: 27)
Aviation Week     Full-text available via subscription   (Followers: 437)
Canadian Aeronautics and Space Journal     Full-text available via subscription   (Followers: 34)
CEAS Aeronautical Journal     Hybrid Journal   (Followers: 30)
Chinese Journal of Aeronautics     Open Access   (Followers: 21)
Ciencia y Poder Aéreo     Open Access   (Followers: 2)
Civil Aviation High Technologies     Open Access   (Followers: 5)
Control Systems     Hybrid Journal   (Followers: 315)
Cosmic Research     Hybrid Journal   (Followers: 5)
COSPAR Colloquia Series     Full-text available via subscription   (Followers: 11)
Egyptian Journal of Remote Sensing and Space Science     Open Access   (Followers: 24)
Elsevier Astrodynamics Series     Full-text available via subscription   (Followers: 12)
Fatigue of Aircraft Structures     Open Access   (Followers: 15)
Frontiers in Astronomy and Space Sciences     Open Access   (Followers: 12)
Gravitational and Space Research     Open Access  
Gyroscopy and Navigation     Hybrid Journal   (Followers: 260)
IEEE Aerospace and Electronic Systems Magazine     Full-text available via subscription   (Followers: 280)
IEEE Journal on Miniaturization for Air and Space Systems     Hybrid Journal   (Followers: 2)
IEEE Transactions on Aerospace and Electronic Systems     Hybrid Journal   (Followers: 387)
IEEE Transactions on Circuits and Systems I: Regular Papers     Hybrid Journal   (Followers: 39)
International Journal of Aeroacoustics     Hybrid Journal   (Followers: 41)
International Journal of Aerodynamics     Hybrid Journal   (Followers: 37)
International Journal of Aeronautical and Space Sciences     Hybrid Journal   (Followers: 2)
International Journal of Aerospace Engineering     Open Access   (Followers: 82)
International Journal of Aerospace Psychology     Hybrid Journal   (Followers: 23)
International Journal of Aerospace Sciences     Open Access   (Followers: 32)
International Journal of Applied Geospatial Research     Hybrid Journal   (Followers: 7)
International Journal of Aviation Management     Hybrid Journal   (Followers: 9)
International Journal of Aviation Technology, Engineering and Management     Full-text available via subscription   (Followers: 7)
International Journal of Aviation, Aeronautics, and Aerospace     Open Access   (Followers: 5)
International Journal of Crashworthiness     Hybrid Journal   (Followers: 12)
International Journal of Micro Air Vehicles     Full-text available via subscription   (Followers: 11)
International Journal of Satellite Communications Policy and Management     Hybrid Journal   (Followers: 13)
International Journal of Space Science and Engineering     Hybrid Journal   (Followers: 11)
International Journal of Space Structures     Full-text available via subscription   (Followers: 17)
International Journal of Space Technology Management and Innovation     Full-text available via subscription   (Followers: 10)
International Journal of Sustainable Aviation     Hybrid Journal   (Followers: 5)
International Journal of Turbo and Jet-Engines     Hybrid Journal   (Followers: 6)
Investigación Pecuaria     Open Access   (Followers: 3)
Journal of Aerodynamics     Open Access   (Followers: 18)
Journal of Aeronautical Materials     Open Access   (Followers: 9)
Journal of Aeronautics & Aerospace Engineering     Open Access   (Followers: 31)
Journal of Aerospace Engineering     Full-text available via subscription   (Followers: 69)
Journal of Aerospace Engineering & Technology     Full-text available via subscription   (Followers: 18)
Journal of Aerospace Information Systems     Hybrid Journal   (Followers: 22)
Journal of Aerospace Information Systems     Hybrid Journal   (Followers: 34)
Journal of Aerospace Technology and Management     Open Access   (Followers: 7)
Journal of Aircraft     Hybrid Journal   (Followers: 337)
Journal of Aircraft and Spacecraft Technology     Open Access   (Followers: 9)
Journal of Airline and Airport Management     Open Access   (Followers: 12)
Journal of Astrobiology & Outreach     Open Access   (Followers: 3)
Journal of Aviation Technology and Engineering     Open Access   (Followers: 11)
Journal of Aviation/Aerospace Education & Research     Open Access   (Followers: 2)
Journal of Engineering and Technological Sciences     Open Access   (Followers: 1)
Journal of Guidance, Control, and Dynamics     Hybrid Journal   (Followers: 204)
Journal of KONBiN     Open Access   (Followers: 3)
Journal of Navigation     Hybrid Journal   (Followers: 281)
Journal of Propulsion and Power     Hybrid Journal   (Followers: 615)
Journal of Space Safety Engineering     Hybrid Journal   (Followers: 8)
Journal of Space Weather and Space Climate     Open Access   (Followers: 27)
Journal of Spacecraft and Rockets     Hybrid Journal   (Followers: 773)
Journal of Spatial Science     Hybrid Journal   (Followers: 3)
Journal of the American Helicopter Society     Full-text available via subscription   (Followers: 8)
Journal of the Astronautical Sciences     Hybrid Journal   (Followers: 9)
Journal of the Australasian Society of Aerospace Medicine     Open Access   (Followers: 1)
Journal of Wind Engineering and Industrial Aerodynamics     Hybrid Journal   (Followers: 17)
Life Sciences in Space Research     Hybrid Journal   (Followers: 4)
MAD - Magazine of Aviation Development     Open Access   (Followers: 2)
Mekanika : Jurnal Teknik Mesin i     Open Access   (Followers: 1)
Microgravity Science and Technology     Hybrid Journal   (Followers: 2)
New Space     Hybrid Journal   (Followers: 6)
Nonlinear Dynamics     Hybrid Journal   (Followers: 20)
npj Microgravity     Open Access   (Followers: 3)
Open Aerospace Engineering Journal     Open Access   (Followers: 1)
Perspectives of Earth and Space Scientists i     Open Access  
Population Space and Place     Hybrid Journal   (Followers: 9)
Problemy Mechatroniki. Uzbrojenie, lotnictwo, inżynieria bezpieczeństwa / Problems of Mechatronics. Armament, Aviation, Safety Engineering     Open Access   (Followers: 3)
Proceedings of the Human Factors and Ergonomics Society Annual Meeting     Hybrid Journal   (Followers: 16)
Proceedings of the Institution of Mechanical Engineers Part G: Journal of Aerospace Engineering     Hybrid Journal   (Followers: 46)
Progress in Aerospace Sciences     Full-text available via subscription   (Followers: 81)
Propulsion and Power Research     Open Access   (Followers: 68)
REACH - Reviews in Human Space Exploration     Full-text available via subscription   (Followers: 5)
Research & Reviews : Journal of Space Science & Technology     Full-text available via subscription   (Followers: 17)
RocketSTEM     Free   (Followers: 6)
Russian Aeronautics (Iz VUZ)     Hybrid Journal   (Followers: 24)
Science and Education : Scientific Publication of BMSTU     Open Access   (Followers: 1)
Space and Polity     Hybrid Journal   (Followers: 4)
Space Policy     Hybrid Journal   (Followers: 29)
Space Research Today     Full-text available via subscription   (Followers: 48)
Space Safety Magazine     Free   (Followers: 51)
Space Science International     Open Access   (Followers: 202)
Space Science Reviews     Hybrid Journal   (Followers: 97)
SpaceNews     Free   (Followers: 826)
Spatial Information Research     Hybrid Journal   (Followers: 1)
Technical Soaring     Full-text available via subscription   (Followers: 1)
Transport and Aerospace Engineering     Open Access   (Followers: 1)
Transportmetrica A : Transport Science     Hybrid Journal   (Followers: 9)
Unmanned Systems     Hybrid Journal   (Followers: 5)
Вісник Національного Авіаційного Університету     Open Access   (Followers: 2)

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Similar Journals
Journal Cover
Cosmic Research
Journal Prestige (SJR): 0.246
Citation Impact (citeScore): 1
Number of Followers: 5  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1608-3075 - ISSN (Online) 0010-9525
Published by Springer-Verlag Homepage  [2656 journals]
  • Development of the Project for Reconstruction of the Havana Radio
           
    • Abstract: There is a need today to recreate the Havana observational solar station because of the importance of obtaining a regular forecast of solar activity in a wide range of time intervals. The concept of the created observation network and the infrastructure of the monitoring station as a network element are described in detail. The functions of this network will provide continuous observational material for the Russian Sun and Space Weather Services and will be independent of space observations, but capable of using them for quality control. The physical foundations of complex observations for a wide range of heliogeophysical phenomena are considered.
      PubDate: 2021-03-01
       
  • Postvolcanic Aerosols: Measurements of Altitude and Particle Sizes with
           Twilight-Sky Polarimetry
    • Abstract: The intensity and polarization of the twilight-sky background were measured during the epoch of “purple lights” after the Raikoke volcanic eruption in the summer of 2019. The increase in brightness paired with the decrease in polarization was registered, and the changes were especially noticeable in the dusk segment. The altitude distribution of aerosol particles and their mean size were found with previously developed techniques. The median radius of the lognormal distribution (0.11 μm) is typical of the background conditions or weak eruptions; however, the aerosols were mostly concentrated in the upper troposphere and near the tropopause rather than in the stratosphere. From comparison with satellite data obtained almost a decade ago after similar eruptions (like those of the Kasatochi volcano and others), it has been shown that the properties of their aerosols are similar, which confirms that the purple light phenomenon observed in 2019 was of volcanic origin.
      PubDate: 2021-03-01
       
  • Investigation of Steady-State Motion of an Artificial Earth Satellite in
           the Uniaxial Magnetic Orientation Mode
    • Abstract: — The rotational motion of an axisymmetric artificial satellite with a constant magnet under an effect of a torque produced by the Earth’s magnetic field (EMF) influence on the magnet is studied. The orbital motion of a satellite is calculated taking into account the noncentral nature of the Earth’s gravitational field and the atmospheric drag; the proper magnetic moment of a satellite is parallel to the axis of symmetry. The steady-state motions of a satellite are constructed, in which the axis of symmetry makes a small angle with the EMF intensity vector. The IGRF model is used as the EMF model. It is shown that such motions can be approximated by a sequence of periodic solutions of modified equations of motion. Steady-state motions contain two basis frequencies—the orbital and angular velocity of the Earth’s rotation. Periodic solutions have an orbital period, but the spectrum of the approximating sequence composed of them virtually coincides with the spectrum of the original steady-state mode.
      PubDate: 2021-03-01
       
  • On the Probable Change of the Status of the Current Unusual Failure of
           11-Year Solar Cyclicity from Local to Global
    • Abstract: The anomalous increase in the area of the 23rd solar cycle detected by galactic cosmic rays (GCRs) was a precursor of failure of the 11-year cyclicity: in accordance with the author’s hypothesis about the invariant of the 22-year cycle, an increase in the area of the 23rd cycle was followed by a decrease in the area (energy intensity) of the next 24th cycle. A decrease in energy intensity is accompanied by a decrease (relative variation) in the luminosity of the Sun, which in the 24th cycle has decreased to the level of the average value of the three previous cycles, i.e., almost twice. If the invariant of the 22-year cycle is preserved, the restoration of the 11-year cyclicity in the 25th cycle should be expected. If the invariant of the 22-year cycle is violated, the level of the GCR radiation background at the maximum of the forthcoming 25th cycle (from 2024 to 2025) should not be lower than the background radiation level at the maximum of the 24th cycle (2014). In this case, the state of the 23rd–24th–25th cycle unusual failure will change from local to global.
      PubDate: 2021-03-01
       
  • Lower Ionosphere of the Arctic in June 2015 during a Strong Magnetic Storm
           and Solar X-Ray Flares According to Eclipsing Radiosonde Data on
           GPS–Formosat Intersatellite Paths
    • Abstract: The results of are presented of determining the height profiles of electron concentration \(N(h)\) during the daytime solstice of June 19–30, 2015. Dependences of \(N(h)\) recorded in a calm state and the presence of sporadic structures of varying intensity are given. The histograms of the distribution of the variable plasma concentration for four values of the height of the lower ionosphere were determined. It is shown that, at an altitude of 100 km, an increase in the electron concentration by a factor of 4–5 occurs under the action of an X-ray flare from the Sun. Manifestations of different types of sporadic formations in changes in the amplitude of radio signals are considered and three types of amplitude variations characteristic of sporadic structures are identified.
      PubDate: 2021-03-01
       
  • Reconstruction of Rotational Motion of the Progress Spacecraft in the Mode
           of One-Axis Solar Orientation According to Solar Array Current
           Measurements
    • Abstract: The uncontrolled rotational motion of the Progress M-24M and M-25M cargo spacecraft in the mode of one-axis solar orientation (the so-called “spin on the Sun”) has been reconstructed. The initial conditions of motion in this mode are the spinning of the spacecraft with an angular velocity of 2.2–2.4°/s around the normal to the sunward plane of the solar arrays. The duration of the mode is several orbits. The reconstruction was carried out using an integral statistical method based on telemetric values of the current taken from its solar arrays. As a result, the rotational motion of the spacecraft relative to the Earth–Sun direction is determined. A study of the spectrum of current oscillations during spinning was carried out, which explains the possibility of reconstruction based on such, at first sight, little informative data.
      PubDate: 2021-03-01
       
  • Development of the Common Classification of Hazard Events in Near-Earth
           Space
    • Abstract: The article summarizes the practical experience of performing work to prevent hazard events in the near-Earth space (NES), including the mathematical formulation of the problem of calculating the collision probability, work on detecting potentially hazardous asteroids, and general principles for detecting potentially hazardous conjunction of space objects. Approaches to the formation of the common classification of hazard events in NES are considered. A description of the components of the classification system in the form of separate units is presented.
      PubDate: 2021-03-01
       
  • A Study of the Characteristics of a Terahertz Radiation Detector for the
           Solntse–Terahertz Scientific Apparatus
    • Abstract: This paper provides a brief description individual elements that can be included in the Solntse–Terahertz scientific apparatus that was designed for the first time to carry out an extra-atmospheric experiment onboard the International Space Station. Its purpose is to measure terahertz electromagnetic radiation both from the quiet Sun and during active processes on the Sun (solar flares, coronal mass ejections, etc.), which is necessary to establish the physical nature of solar activity and solar flares. The possibility is discussed of using optoacoustic converters (Golay cells) as receivers of terahertz radiation, the sensitivity, stability, and response time of which were determined in the course of preliminary laboratory studies under terrestrial conditions.
      PubDate: 2021-01-01
      DOI: 10.1134/S0010952521010032
       
  • Specific Features of the Reflection of Whistler Electromagnetic Waves,
           Incident on the Ionosphere from Above, in Day- and Nighttime Conditions
    • Abstract: A numerical solution of the wave equations for whistler electromagnetic waves incident on the ionosphere from above is obtained. For the calculations, we used a matrix algorithm for the approximate solution of wave equations in a stratified smoothly inhomogeneous medium and the collocation method for solving the boundary problem. Dependences of reflection coefficients R are obtained and analyzed on the frequency and angle of incidence of the wave for different seasons and time of day. At night, for waves with frequencies from 1 to 10 kHz, the values of R vary from 0.1 to 0.7. In daytime conditions, the value of R, on average, is two orders of magnitude lower and does not exceed 0.04. The smallest values of the reflection coefficient are associated with waves, the reflection of which occurs in the region of strong attenuation at heights of 80–110 km. The results obtained explain the specific features of the conditions for the excitation of the plasma magnetospheric maser.
      PubDate: 2021-01-01
      DOI: 10.1134/S0010952521010068
       
  • Comparison of the Results on Precipitation of High-Energy Electrons in the
           Stratosphere and on Satellites
    • Abstract: — Energetic electron precipitation (EEP) into the atmosphere is one of the mechanisms of depleting the Earth’s outer radiation belt. Precipitating electrons generate bremsstrahlung that penetrates the stratosphere and is recorded by detectors on balloons. However, these observations can be carried out only when the balloon is located at altitudes higher than ~20 km. The near-Earth POES satellites are constantly recording the fluxes of precipitating electrons in the loss cone, but they move too quickly in the space. In this paper, EEPs are compared on the basis of observations in the stratosphere and on satellites during 2003 and estimates of a number of EEP events at Apatity are obtained, assuming that the radiosonde was continuously located at an altitude higher than 26 km.
      PubDate: 2021-01-01
      DOI: 10.1134/S0010952521010020
       
  • Natural Vibrations of a Spacecraft’s Solar Array Wing
    • Abstract: In the process of deploying the wings of solar arrays of a spacecraft, natural transverse vibrations arise in them. The study of these vibrations is an urgent problem, since in some cases they are capable of disrupting the commutation of photoelectric converters. The transverse vibrations of the wing originate from the connection of its sections when locking (coupling) hinge devices. In this case, the kinetic energy of the sections is converted into the potential energy of natural vibrations of the solar array wing. This problem is traditionally solved by using a finite element model with subsequent calculations in the ANSYS program. The purpose of this study is to develop an approximate analytical method for mathematical modeling of the natural elastic vibrations of elements of the solar array wing arising in the process of its deploying.
      PubDate: 2021-01-01
      DOI: 10.1134/S0010952521010081
       
  • MMS Observations of Narrow-Band Quasi-Parallel Whistler Waves in the Flow
           Braking Region in Near-Earth Magnetotail
    • Abstract: — This paper presents an analysis of wave activity recorded by the MMS satellites during a prolonged dipolarization in the near magnetotail (XGSM ~ –17 RE). It was found that multiple narrow-band, quasi-parallel whistler wave bursts were observed behind the leading front of dipolarization, during the phase of growth of the magnetic field’s BZ component. The durations of wave bursts were ~1–15 s, and the characteristic frequencies ranged from ~0.1 to 0.8 fc (fc is the electron gyrofrequency). Based on a detailed analysis of a single wave burst, it was found that the frequency corresponding to the maximum value of a linear increment of quasi-parallel whistler waves was close in magnitude to the observed frequency, which indicates the possibility of satellite location close to the source of waves. We also demonstrated that, in the case under discussion, the electrons with pitch angles of 125°–135° and energies of ~3–12 keV made a largest contribution to the increment of whistler waves. These observations have shown that, during dipolarizations, the thermal and suprathermal electron populations are most effectively involved in resonant interaction with whistler waves.
      PubDate: 2021-01-01
      DOI: 10.1134/S0010952521010044
       
  • Optimization of Spatial Lunar Landing Trajectories: Attainability Domains,
           Redirection, and Descent Profile Constraint
    • Abstract: A direct method for optimizing the spatial trajectories of lunar landing in the deceleration phase with a limitation along the descent profile, when the lander must remain inside a certain cone with apex at a given landing point, is presented. The model of motion is a point of variable mass moving in a uniform gravitational field. The method uses a two-level optimization of the characteristic velocity for a given distance and lateral displacement at free landing time. The upper level corresponds to one-dimensional nonlinear optimization of the landing time. The lower level corresponds to optimization for the landing times established at the upper level and the given coordinates of the landing point using discrete sets of pseudopulses and high-dimensional linear programming. Energetically accessible regions and regions when redetermining the landing point are presented as examples.
      PubDate: 2021-01-01
      DOI: 10.1134/S0010952521010093
       
  • Retrospective on the Problem of Space Debris. Part 2. Monitoring of Space
           Debris of Natural Origin in Near-Earth Space Using Optical Methods of
           Meteor Astronomy
    • Abstract: A review of publications on the problems of monitoring of clogging near-Earth space by natural space debris, including hazardous meteoroids, using methods of optical meteor astronomy is carried out. Both observation methods and methods for estimating the danger from natural space debris for spacecraft are analyzed.
      PubDate: 2021-01-01
      DOI: 10.1134/S0010952521010056
       
  • A Promising Experiment with a Gamma Ray Spectrometer Onboard a Mobile
           Spacecraft to Study the Elemental Composition of the Moon, Mars, and Other
           Celestial Bodies without an Atmosphere or with a Thin Atmosphere
    • Abstract: A new concept of a space experiment with a γ-ray spectrometer onboard a mobile spacecraft has been proposed for studying the elemental composition of the Moon, Mars, and other celestial bodies without an atmosphere or with a thin atmosphere using the method of tagged charged particles of galactic cosmic rays. This technique makes it possible to eliminate almost fully the background of γ-radiation from the spacecraft with the instrument installed onboard and significantly increase the spatial resolution for studying the elemental composition of matter along the mobile spacecraft trajectory.
      PubDate: 2021-01-01
      DOI: 10.1134/S0010952521010019
       
  • Pareto-Optimum Requirements for the Accuracy of the Reflective Surface of
           
    • Abstract: Increasing frequencies of perspective space mirror antennas functioning leads to a significant tightening of the requirements for the accuracy and stability of the reflecting surface of the used reflectors. However, the provision of high requirements is technically difficult to implement. Hence, the problem of Pareto-optimal design of parabolic antenna reflectors with a relatively high signal amplification coefficient and minimum requirements for the accuracy of the reflecting surface profile is formulated. We obtained analytical estimates for Pareto fronts of various ranks characterizing the accuracy of the profile of the reflecting surface of the antenna parabolic reflector depending on its diameter and the range of operating frequencies required to ensure a high signal gain.
      PubDate: 2021-01-01
      DOI: 10.1134/S001095252101007X
       
  • Prediction of Solar Flares and Background Fluxes of X-Ray Radiation
           According to Synoptic Ground-Based Observations Using Machine-Learning
           Models
    • Abstract: The paper presents machine-learning models for predicting powerful solar flares and background X-ray fluxes in the range of 1–8 Å. To predict solar flares for the next day, information was used on the current level of solar activity obtained from ground-based synoptic observations, such as characteristics of sunspots and radio fluxes at wavelengths of 10.7 and 5 cm, as well as the level of the background flux and the number of solar flares of the current day obtained from the GOES satellite. To predict the background fluxes of X-ray radiation, only data from ground-based telescopes were used. The high efficiency of the forecast for the next day is shown. The neural network was trained on data available since 2002.
      PubDate: 2020-11-01
      DOI: 10.1134/S0010952520060106
       
  • Formation of Multiple Current Sheets in the Heliospheric Plasma Sheet
    • Abstract: When spacecraft cross the heliospheric plasma sheet (HPS) that separates large-scale magnetic sectors of opposite directions in the solar wind, multiple rapid fluctuations in the sign of the magnetic radial component are often observed. These fluctuations indicate the change of the sign of the azimuth electric current density within the HPS. Possible mechanisms of formation of the multilayered current structure of the HPS are proposed. Within the context of a stationary magnetohydrodynamic solar wind model, we test one of the most popular hypotheses regarding an extension of multiple current sheets from the streamer belt oriented along the neutral line of the solar magnetic field into the solar wind. Properties of self-consistent distributions of the solar wind key characteristics are investigated as function of the fine structure of streamers. The results show that both single and multiple streamers can be the source of the set of a multilayered structure with alternating azimuthal currents. The significance of the results for the interpretation of solar wind data is discussed.
      PubDate: 2020-11-01
      DOI: 10.1134/S0010952520060076
       
  • Current Sheets with Multicomponent Plasma in Magnetospheres of Planets of
           the Solar System
    • Abstract: A self-consistent hybrid model of a thin current sheet (TCS) with a thickness of the order of several ion gyroradii is proposed that takes into account the multicomponent nature of collisionless space plasma. Several plasma components can be present in the tails of the magnetospheres of terrestrial planets (for example, the Earth, Mercury, Mars, and Venus). Variations in the current sheet (CS) structure in magnetospheric plasma in the presence of heavy oxygen ions with different characteristics are analyzed. It is shown that high relative concentrations of oxygen ions, as well as their relatively high temperatures and drift velocities, lead to significant thickening of CS and the formation of an additional embedded scale. In this case, on the profiles of the main characteristics—current density and magnetic field—symmetric breaks appear, which correspond to a sharp change in the gradients of variation in values. A comparison is performed and a qualitative agreement is shown between the simulation results and observational data in the tail of the Martian magnetosphere.
      PubDate: 2020-11-01
      DOI: 10.1134/S0010952520060039
       
  • Characteristics of Turbulent Solar Wind Flow in Plasma Compression Regions
    • Abstract: This work is devoted to the study of properties of spectra of turbulent solar wind fluctuations in plasma compression regions, such as CIR (the plasma compression regions in front of high-speed streams from coronal holes) and SHEATH (the compression regions in front of interplanetary manifestations of coronal mass ejections EJECTA and magnetic clouds MC). The spectra of ion flux fluctuations, on both magnetohydrodynamic and ion-kinetic scales, are considered on the basis of data from the BMSW spectrometer on the SPEKTR-R spacecraft with a high (up to 31 ms) time resolution. The comparison of turbulent characteristics in the plasma compression regions and in the undisturbed solar wind is carried out both on a separate example and using extensive statistical material. It is shown in the paper that the turbulent cascade characteristics on the kinetic interval can significantly change in the plasma compression regions, and the signatures of a change in the main processes that determine the energy dissipation are revealed in them, which may cause increased heating in the regions under consideration.
      PubDate: 2020-11-01
      DOI: 10.1134/S001095252006009X
       
 
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