Search Publications
Geomagnetic Pulsations in the 1-4 mHz Frequency Range (Pc5/Pi3) in the Magnetotail. Internal and Extramagnetospheric Sources
Yagova, N. V.; Evsina, N. S.
Spectral and spatial parameters of nonstorm Pc5/Pi3 geomagnetic pulsations in the geomagnetic tail are studied based on magnetic measurements on Cluster satellites under different conditions in the interplanetary medium. Both the average values of the magnetic field components in front of the bow shock and fluctuations in the pulsations' frequency…
The Influence of Oxygen Ions on the Formation of a Thin Current Sheet in the Magnetotail
Malova, H. V.; Popov, V. Yu.; Zelenyi, L. M. +2 more
A thin current sheet in the Earth's magnetotail with characteristic thickness of one to several proton gyroradii is often observed during magnetospheric disturbances named substorms, when a relatively thick current configuration in the magnetotail is narrowed to an extremely small thickness and then can spontaneously be destroyed. The current-shee…
Estimation of the Electron Density in the Near 3-4 RE Magnetosphere Based on the Measurement of the Interball-2 Satellite Potential
Smirnova, N. F.; Stanev, G.
A new method is proposed for determining the electron density in rarefied plasma, based on simultaneous measurements of the Interball-2 satellite potential using IESP-2 (electric field instrument) and KM-7 (electron temperature sensor) probe devices. This makes it possible to estimate the photoelectron current density based on a procedure proposed…
A Comparative Analysis of Quasi-Periodic Processes in the Magnetospheric Current Sheet and the Current Sheets of the Solar Corona
Zimovets, I. V.; Lukin, A. S.; Artemiev, A. V.
Reconnection of magnetic field lines represents a universal process of releasing the stored energy of the magnetic field and its transformation into the thermal energy of plasma and the energy of accelerated charged particles. The initialization and proceeding of the magnetic reconnection process are essentially related with the dynamics of a spat…
Current Sheets with Multicomponent Plasma in Magnetospheres of Planets of the Solar System
Popov, V. Yu.; Petrukovich, A. A.; Grigorenko, E. E. +2 more
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, a…
Comparison of Magnetic and Plasma Overshoots of Interplanetary Shocks
Yermolaev, Yu. I.; Eselevich, V. G.; Zastenker, G. N. +2 more
The structure of interplanetary shock fronts was studied based on the data from the BMSW plasma spectrometer, installed on the SPEKTR-R spacecraft, supplemented by magnetic field measurements on the WIND spacecraft. Special attention was paid to periodic growths (overshoots) in the value of the ion flux or magnetic field relative to their mean val…
Investigation of the Effect of a Longitudinal Magnetic Field Component on the Dynamics of Protons inside a Plasmoid
Malova, H. V.; Malykhin, A. Yu.; Grigorenko, E. E.
Kinetic effects of the dynamics of protons in plasmoids with a non-zero longitudinal ( By) magnetic field component in a current sheet (CS) of a geomagnetic tail are considered. The results of modeling proton dynamics and a description of the mechanism of emergence of "north-south" density asymmetry are presented. The mechanism that is possibly re…
Modeling of Magnetic Dipolarizations and Turbulence in Earth's Magnetotail as Factors of Plasma Acceleration and Transfer
Malova, H. V.; Popov, V. Yu.; Petrukovich, A. A. +4 more
On the Accuracy of the Conjugation of High-Orbit Satellites with Small-Scale Regions in the Ionosphere
Safargaleev, V. V.; Safargaleeva, N. N.
The degree of uncertainty that arises when mapping high-orbit satellites of the Cluster type into the ionosphere using three geomagnetic field models (T89, T98, and T01) has been estimated. Studies have shown that uncertainty is minimal in situations when a satellite in the daytime is above the equatorial plane of the magnetosphere at the distance…
Acceleration and particle transport in collisionless plasma in the process of dipolarization and nonstationary turbulence
Popov, V. Yu.; Petrukovich, A. A.; Zelenyi, L. M. +3 more
This work is devoted to studying the processes of the acceleration of plasma particles in thin current sheets that appear during magnetospheric substorms in the Earth's magnetosphere tail. A numerical model of magnetic dipolarization accompanied by plasma turbulence has been constructed and studied. The model allows one to investigate the particle…