Structures of dayside whistler-mode waves deduced from conjugate diffuse aurora

Structures of dayside whistler-mode waves deduced from conjugate diffuse aurora

We present simultaneous measurements of dayside diffuse aurora and whistler‐mode waves made by the South Pole all‐sky imager and two of the THEMIS spacecraft. We found a high correlation between the diffuse aurora intensity at 557.7 nm near the footprint latitudes of THEMIS and whistler‐mode wave in...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of geophysical research. Space physics 2013-02, Vol.118 (2), p.664-673
Hauptverfasser: Nishimura, Y., Bortnik, J., Li, W., Thorne, R. M., Ni, B., Lyons, L. R., Angelopoulos, V., Ebihara, Y., Bonnell, J. W., Le Contel, O., Auster, U.
Format: Artikel
Sprache:eng
Schlagworte:
Astrophysics
Auroras
dayside chorus
dayside diffuse aurora
dayside hiss
Equator
Geophysics
Physics
Plasma
Plasma Physics
Southpole
Spacecraft
Spatial distribution
THEMIS
Waves
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We present simultaneous measurements of dayside diffuse aurora and whistler‐mode waves made by the South Pole all‐sky imager and two of the THEMIS spacecraft. We found a high correlation between the diffuse aurora intensity at 557.7 nm near the footprint latitudes of THEMIS and whistler‐mode wave intensity measured on board. The power in other wave modes was negligibly small in most cases, indicating that the dayside diffuse aurora is driven by precipitating energetic electrons resonating with whistler‐mode waves. The high correlation over a wide L* range (6 
ISSN:2169-9380
2169-9402
DOI:10.1029/2012JA018242