A systematic study of effects of solar wind density on auroral electrojets

J. H. Shue, Y. Kamide, Pat T. Newell

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The subject of effects of solar wind density (Np) on auroral electrojets has recently received increasing attention. For "unbiased" events in which only Np varied significantly but other solar wind parameters were relatively constant, we calculated rates of change of the auroral electrojets per unit change of Np (dAU/dNp and dAL/dNp). Here we report that the distribution of dAU/dNp and dAL/dNp binned by the Z component of interplanetary magnetic field (IMF) shows a butterfly pattern. The rates are found to be small for northward IMF. As the southward IMF becomes larger, the distribution bifurcates-one branch extending to positive rates and the other to negative rates. Although it has been commonly believed that the enhanced Np increases the auroral electrojets, the enhanced Np can also decrease the auroral electrojets with a 49% probability.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalGeophysical Research Letters
Volume32
Issue number14
DOIs
StatePublished - 28 Jul 2005

Fingerprint

Dive into the research topics of 'A systematic study of effects of solar wind density on auroral electrojets'. Together they form a unique fingerprint.

Cite this