On enhanced aurora and low-altitude parallel electric fields
2005 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 72, no 5, 419-422 p.Article in journal (Refereed) Published
Enhanced auroras are bands of enhanced intensity, sometimes observed along the bottom edges of auroral arcs. It is here proposed that they sometimes are due to local electron energization by low-altitude. downward-directed DC electric fields. which arise as a consequence of the ionospheric response to small-scale auroral current systems. Simulations of such structures are presented. and the electron energization mechanism is discussed. The enhanced auroras would, in this model, appear parallel and close to (perhaps only a few kin front) an ordinary auroral arc. Detailcd 3-D observations of auroral arc structures could resolve if enhanced auroras sometimes take this form.
Place, publisher, year, edition, pages
2005. Vol. 72, no 5, 419-422 p.
IdentifiersURN: urn:nbn:se:kth:diva-15206DOI: 10.1238/Physica.Regular.072a00419ISI: 000233602200015ScopusID: 2-s2.0-27944473045OAI: oai:DiVA.org:kth-15206DiVA: diva2:333247
QC 201005252010-08-052010-08-05Bibliographically approved