Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Quiet, Discrete Auroral Arcs-Observations
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Space and Plasma Physics.ORCID iD: 0000-0003-1270-1616
Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA..
Univ Calgary, Dept Phys & Astron, Calgary, AB, Canada..
Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA..
Show others and affiliations
2020 (English)In: Space Science Reviews, ISSN 0038-6308, E-ISSN 1572-9672, Vol. 216, no 1, article id 16Article, review/survey (Refereed) Published
Abstract [en]

Quiet, discrete auroral arcs are an important and fundamental consequence of solar wind-magnetosphere interaction. We summarize the current standing of observations of such auroral arcs. We review the basic characteristics of the arcs, including occurrence in time and space, lifetimes, width and length, as well as brightness, and the energy of the magnetospheric electrons responsible for the optical emission. We briefly discuss the connection between single and multiple discrete arcs. The acceleration of the magnetospheric electrons by high-altitude electric potential structure is reviewed, together with our current knowledge of these structures. Observations relating to the potential drop, altitude distribution and lifetimes are reviewed, as well as direct evidence for the parallel electric fields of the acceleration structures. The current closure in the ionosphere of the currents carried by the auroral electrons is discussed together with its impact on the ionosphere and thermosphere. The connection of auroral arcs to the magnetosphere and generator regions is briefly touched upon. Finally we discuss how to progress from the current observational status to further our understanding of auroral arcs.

Place, publisher, year, edition, pages
Springer, 2020. Vol. 216, no 1, article id 16
Keywords [en]
Discrete auroral arcs, Auroral acceleration region, Ionospheric currents
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-271513DOI: 10.1007/s11214-020-0641-7ISI: 000519128900002Scopus ID: 2-s2.0-85078956229OAI: oai:DiVA.org:kth-271513DiVA, id: diva2:1425780
Note

QC 20200422

Available from: 2020-04-22 Created: 2020-04-22 Last updated: 2020-04-22Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Karlsson, Tomas
By organisation
Space and Plasma Physics
In the same journal
Space Science Reviews
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 11 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf