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The 3-D Distribution of Artificial Aurora Induced by HF Radio Waves in the Ionosphere
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2019 (Engelska)Ingår i: Journal of Geophysical Research - Space Physics, ISSN 2169-9380, E-ISSN 2169-9402, Vol. 124, nr 4, s. 2992-3006Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We present 3-D excitation rate estimates of artificial aurora in the ionospheric F layer, induced by high-frequency radio waves from the European Incoherent Scatter heating facility. Simultaneous imaging of the artificial aurora was done with four separate Auroral Large Imaging System stations, permitting tomography-like 3-D auroral reconstruction of the enhanced atomic oxygen emissions at 6,300, 5,577, and 8,446 Å. Inspection of the 3-D reconstructions suggests that the distribution of energized electrons is less extended in altitude than predicted by transport calculations of electrons accelerated to 2?100 eV. A possible reason for this discrepancy is that high-frequency pumping might induce an anisotropic distribution of energized electrons.

Ort, förlag, år, upplaga, sidor
John Wiley & Sons, Ltd , 2019. Vol. 124, nr 4, s. 2992-3006
Nyckelord [en]
heating, aurora, ionosphere, tomography, reconstruction, EISCAT
Nationell ämneskategori
Astronomi, astrofysik och kosmologi
Identifikatorer
URN: urn:nbn:se:polar:diva-8370DOI: 10.1029/2018JA025988OAI: oai:DiVA.org:polar-8370DiVA, id: diva2:1395883
Tillgänglig från: 2020-02-24 Skapad: 2020-02-24 Senast uppdaterad: 2020-02-24Bibliografiskt granskad

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Förlagets fulltexthttps://doi.org/10.1029/2018JA025988
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Journal of Geophysical Research - Space Physics
Astronomi, astrofysik och kosmologi

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