Journal article
Striated drifting auroral kilometric radiation bursts: Possible stimulation by upward traveling EMIC waves
Journal of Geophysical Research: Space Physics, Vol.111(A4), pp.A04214-n/a
04/2006
DOI: 10.1029/2005JA011339
Abstract
We investigate waves observed by the Cluster wideband instrument (WBD) during an orbital conjunction with the Polar spacecraft. During this perigee pass, Polar was at the upper extent of the auroral kilometric radiation (AKR) source region in the Southern Hemisphere nightside auroral region. Cluster was located at higher altitude above this region and observed AKR with clear signatures of ordered fine structure striations (rain). Using electron particle data observed by HYDRA on board Polar, we have modeled the electron distribution function within the AKR source region. This distribution function is unstable to a number of low‐frequency wave modes and supports EMIC waves propagating along the magnetic field line. These waves appear to be feasible to stimulate the growth of AKR, producing the ordered fine structure observed by WBD on board Cluster, but further analysis will be important, especially plasma simulations.
Details
- Title: Subtitle
- Striated drifting auroral kilometric radiation bursts: Possible stimulation by upward traveling EMIC waves
- Creators
- J. D Menietti - University of IowaR. L Mutel - University of IowaO Santolik - Charles UniversityJ. D Scudder - University of IowaI. W Christopher - University of IowaJ. M Cook - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of Geophysical Research: Space Physics, Vol.111(A4), pp.A04214-n/a
- DOI
- 10.1029/2005JA011339
- ISSN
- 0148-0227
- eISSN
- 2156-2202
- Number of pages
- 9
- Language
- English
- Date published
- 04/2006
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199934302771
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