English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Analysis of the Interball-1 spacecraft data (1995-2000) has shown that thesolar wind ion flux sometimes increases or decreases abruptly by more than 20%over a time period of several seconds or minutes. Typically, the amplitude ofsuch sharp changes in the solar wind ion flux (SCIFs) is larger than 0.5x10^8cm^-2 s^-1. These sudden changes of the ion flux were also observed by theSolar Wind Experiment (SWE), on board the WIND spacecraft, as the solar winddensity increases and decreases with negligible changes in the solar windvelocity. SCIFs occur irregularly at 1 AU, when plasma flows with specificproperties come to the Earth's orbit. SCIFs are usually observed in slow,turbulent solar wind with increased density and interplanetary magnetic fieldstrength. The number of times SCIFs occur during a day is simulated using thesolar wind density, magnetic field, and their standard deviations as inputparameters for a period of 5 years. A correlation coefficient of ~0.7 isobtained between the modelled and the experimental data. It is found that SCIFsare not associated with coronal mass ejections (CMEs), corotating interactionregions (CIRs), or interplanetary shocks; however, 85% of the sector boundariesare surrounded by SCIFs. The properties of the solar wind plasma for days with5 or more SCIF observations are the same as those of the solar wind plasma atthe sector boundaries. One possible explanation for the occurrence of SCIFs(near sector boundaries) is magnetic reconnection at the heliospheric currentsheet or local current sheets. Other probable causes of SCIFs (inside sectors)are turbulent processes in the slow solar wind and at the crossings of fluxtubes.

Sharp changes of solar wind ion flux and density within and outside current sheets