Journal article
Chorus observations by the Polar spacecraft near the mid-altitude cusp
Planetary and space science, Vol.57(12), pp.1412-1418
10/01/2009
DOI: 10.1016/j.pss.2009.07.003
Abstract
Observations of whistler-mode emission, including chorus, were made frequently by mid-altitude satellites such as Polar. In this study we examine an example of such emission when the high-frequency waveform receiver on board Polar was operating allowing direction-finding and polarization measurements in the low-altitude cusp. The results reveal at least two and possibly three distinct groups of narrow-banded chorus emission with a primary source region at the magnetic equator. The groups include emission propagating near the resonance cone angle, emission propagating along a density duct, and possibly emission reflected from the low-altitude cusp. The results indicate that the mid- and low-altitude cusp, perhaps unlike the high-altitude cusp, is not a significant source of narrowband chorus emission. (C) 2009 Elsevier Ltd. All rights reserved.
Details
- Title: Subtitle
- Chorus observations by the Polar spacecraft near the mid-altitude cusp
- Creators
- J. D. Menietti - University of IowaO. Santolik - Inst Atmospher Phys, Prague, Czech RepublicP. Cetin Abaci - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Planetary and space science, Vol.57(12), pp.1412-1418
- Publisher
- Elsevier
- DOI
- 10.1016/j.pss.2009.07.003
- ISSN
- 0032-0633
- eISSN
- 1873-5088
- Number of pages
- 7
- Grant note
- NNG05GM52G / NASA; National Aeronautics & Space Administration (NASA) IAA301120601 / GAAV; Grant Agency of the Czech Republic ATM-04-43531; 0307319/KONTAKT ME842 / NSF; National Science Foundation (NSF)
- Language
- English
- Date published
- 10/01/2009
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984627216802771
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