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A study on the possibility to deduce the 2D distribution of the auroral electron precipitation from multi wavelength optical measurements with auroral imagers
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering.
Swedish Institute of Space Physics / Institutet för rymdfysik.
Swedish Institute of Space Physics / Institutet för rymdfysik.
2011 (English)In: Óptica Pura y Aplicada, ISSN 0030-3917, E-ISSN 2171-8814, Vol. 44, no 4, 605-609 p.Article in journal (Refereed) Published
Abstract [en]

The intensity ratios of auroral emissions at different wavelengths are widely used for reconstruction of auroral electron parameters. This method works quite well if the measurements of the auroral emissions are conducted in the magnetic zenith direction. In this study we want to investigate the possibility to use the intensity ratio method in the case where the observations are made in a direction not parallel to the magnetic field. In particular, we want to check the possibility of using auroral data for deducing the 2D distribution of the auroral electron precipitation. We use ALIS multi-station measurements of the auroral red and green line emissions (6300 Å and 5577 Å) to get data in zenith and non-zenith directions. We also take into account that the red line emission peak and the green line emission peak are at different altitudes. The results of this investigation show we can obtain reliable results for angles up to 35º away from magnetic zenith.

Place, publisher, year, edition, pages
2011. Vol. 44, no 4, 605-609 p.
National Category
Aerospace Engineering
Research subject
Space Technology
Identifiers
URN: urn:nbn:se:ltu:diva-11131Local ID: a090e1fc-07dd-4323-95b0-b5df7b91f772OAI: oai:DiVA.org:ltu-11131DiVA: diva2:984080
Note
Godkänd; 2011; 20150401 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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