Change search
ReferencesLink to record
Permanent link

Direct link
Multispectral observations of auroral rays and curls
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.ORCID iD: 0000-0003-2422-5426
2005 (English)In: Geophysical Research Letters, ISSN 0094-8276, Vol. 32, no 18Article in journal (Refereed) Published
Abstract [en]

Two cases of discrete aurora are presented, in which auroral curls and auroral rays, respectively, were seen. The aurora was imaged by two spatially separated imagers with a long-pass filter ( mainly sensitive to N-2 and N-2(+) emissions), and another imager with a narrow- band 7325 angstrom filter ( sensitive to forbidden O+ doublet). Also, spectra of the aurora were recorded. Using the multispectral imaging and spectra we find that the curls occurred in aurora caused by precipitation of energetic electrons with a lack of low-energy population, while in the rays both high and low energy precipitation were present simultaneously. These findings are confirmed by the altitude determination from triangulation.

Place, publisher, year, edition, pages
2005. Vol. 32, no 18
Keyword [en]
alfven waves, arc, distortions, emissions
URN: urn:nbn:se:kth:diva-15087DOI: 10.1029/2005gl022650ISI: 000232394600001ScopusID: 2-s2.0-27744456110OAI: diva2:333128
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Ivchenko, Nickolay V.
By organisation
Space and Plasma Physics
In the same journal
Geophysical Research Letters

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 21 hits
ReferencesLink to record
Permanent link

Direct link