Studying the small-scale structure of a polarization jet during the April 20, 2018 geomagnetic storm
Journal Title: Solar-Terrestrial Physics - Year 2021, Vol 7, Issue 1
Abstract
In this work, we study the small-scale structure of a polarization jet in the subauroral region during the April 20, 2018 geomagnetic storm. We report measurement results of plasma parameters inside the polarization jet with a maximum sampling rate of up to 1 kHz, obtained with Langmuir probes installed on the NorSat-1 microsatellite. The study establishes the presence of temperature and electron density inhomogeneities inside the polarization jet with spatial dimensions of tens to hundreds of meters. The previously known features of the polarization jet evolution have been confirmed. We have also found that the distribution of the electron temperature inside the jet forms two separate peaks as the geomagnetic activity develops during the storm.
Authors and Affiliations
Sinevich A. A. , Chernyshov A. A. , Chugunin D. V. , Miloch W. J. , Mogilevsky M. M.
Keywords
Related Articles
- EP ID EP696866
- DOI 10.12737/stp-71202103
- Views 215
- Downloads 1
HEURISTIC MODEL OF SOLAR X-RAY SPECTRUM ACCORDING TO SATELLITE DATA FOR GEOPHYSICAL APPLICATIONS
Model and computational algorithm for recovering the X-ray component of the solar spectrum based on GOES XL (0.1–0.8 nm), XS (0.05–0.4 nm or 0.05–0.3 nm) and SDO QD (0.1–7 nm) channels data are presented. The model based...
OPTICAL OBSERVATIONS OF SMALL SPACECRAFT AND SPACE DEBRIS AT ISTP SB RAS SAYAN OBSERVATORY
Launch of several thousands of small spacecraft as part of satellite groups of various companies (OneWeb, SpaceX, etc.) is expected in the coming years. They will significantly increase the “population” in the low-orbit...
SECOND-ORDER PERTURBATIONS IN ALFVÉN WAVES IN COLD PLASMA APPROXIMATION
The second-order amplitude perturbations driven by Alfvén waves are studied. Equations for such second-order perturbations are derived and their solutions are found. The second-order perturbations are shown to be generat...
OBSERVATIONS OF SMALL-SCALE ENERGETIC EVENTS IN THE SOLAR TRANSITION REGION: EXPLOSIVE EVENTS, UV BURSTS, AND NETWORK JETS
In this paper, we review observational aspects of three common small-scale energetic events in the solar transition region (TR), namely TR explosive events, ultraviolet bursts and jets. These events are defined in either...
DAYTIME ELECTRON DENSITY AT IONOSPHERIC F1-LAYER HEIGHTS DURING GEOMAGNETIC STORMS (IRKUTSK)
We have examined variations in electron density Ne at ionospheric F1-layer heights during geomagnetic storms at the Irkutsk ionospheric station (52° N, 104° E). We have selected geomagnetic storms of varying intensity as...