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J. LaBelle First observations of 5fce auroral roars Geophysical Research Letters 39

Version of Record online: 13 OCT 2012 | DOI: 10.1029/2012GL053551

Key Points

  • The aurora emits 5th cyclotron harmonic roar, higher than ever observed
  • Observations at multiple sites allow an estimate of the 4fce roar source height
  • The new waves, like 4th but unlike 2nd and 3rd harmonics, occur in sunlight

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