Title | Double dayside detached auroras: TIMED/GUVI observations |
Publication Type | Journal Article |
Year of Publication | 2004 |
Authors | Zhang, Y, Paxton, LJ, Meng, C-I, Morrison, D, Wolven, B, Kil, H, Christensen, AB |
Journal | Geophysical Research Letters |
Volume | 31 |
Issue | 10 |
Date Published | 05/2004 |
ISSN | 0094-8276 |
Abstract | On August 19, 2003, TIMED/GUVI detected, for the first time, two separated (double) dayside detached auroras (D-DDA) simultaneously in all the GUVI channels, 121.6 nm, 135.6 nm, LBHS, and LBHL. The D-DDA was located at magnetic latitudes around −57° and −63° (L shell 3.4 and 4.9) in the 0900–1030 MLT region. The high-latitude part of the D-DDA is much brighter than the low-latitude part. DMSP particle observation indicates that the source of the D-DDA is energetic (∼10 keV) precipitating protons/electrons from the ring current due to the solar wind dynamic pressure enhancements [Zhang et al., 2002] and/or northward turning of the IMF Bz. Observations of the D-DDA provide the first single-event evidence of multiple peaks in the statistical distribution of proton fluxes at energetic around and below 10 keV at low L-shells [Milillo et al., 2001]. |
URL | http://doi.wiley.com/10.1029/2003GL018949 |
DOI | 10.1029/2003GL018949 |
Short Title | Geophys. Res. Lett. |
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