Generation of field-aligned currents in the near-Earth magnetotail

Dong Hun Lee, Robert L. Lysak, Yan Song

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Sudden brightening of aurora occurs at an early phase of substorm onset. Such auroral enhancements are strongly associated with parallel currents or shear Alfven waves. With MHD wave equations, we investigate the generation of field-aligned currents near the equatorial region of the inner magnetotail, at the boundary between cold and hot plasmas. Our results show that strong localized shear Alfven waves are excited near this boundary via mode conversion when compressional input is assumed. We suggest that this boundary region is strongly associated with the auroral location.

Original languageEnglish (US)
Pages (from-to)1883-1886
Number of pages4
JournalGeophysical Research Letters
Volume28
Issue number9
DOIs
StatePublished - May 1 2001

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