Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • 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
Sub-5km baseline tomography for fine-scale auroral measurements
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.ORCID iD: 0000-0001-5596-346X
Show others and affiliations
2014 (English)In: 2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014, IEEE , 2014, 6928074- p.Conference paper, Published paper (Refereed)
Abstract [en]

Auroral morphologies are a direct result of the specific energy levels driving the optical emissions as well as the spreading of wave energy. The emphasis of the present work is on identifying apparent auroral feature motion in both the B∥ and B⊥ dimensions in order to uncover the physical model responsible for wave spreading under the given electron beam excitation. The auroral B∥ dimension is known to experience a change in shape and peak optical emission for given electron beam energies, and forward models have been previously established for these phenomena. The transverse proper motion of auroral features is related to spreading of energy in the B⊥ direction. Several theories have been advanced to explain the auroral transverse proper motion, but previous observational efforts have been limited to temporal scales on the order of a second. Our new observational facility is capable of simultaneously resolving features to the decameter scale spatially and millisecond scale temporally{a capability not available until now thanks to recent advances in Electron-Multiplying Charge Coupled Device (EMCCD) technology that are triggerable with sub-millisecond accuracy from GPS-disciplined trigger sources. We can thereby combine multiple simultaneous 2D optical observations with arbitrarily physical separation to take tightly time-synchronized observations of extremely faint optical phenomena for tomographic inversion.

Place, publisher, year, edition, pages
IEEE , 2014. 6928074- p.
Keyword [en]
Charge coupled devices, Electron beams, Light emission, Wave energy conversion, Electron beam energy, Electron beam excitation, Electron multiplying charge coupled devices, Optical emissions, Optical observations, Physical separation, Resolving features, Tomographic inversion
National Category
Other Physics Topics
Identifiers
URN: urn:nbn:se:kth:diva-157949DOI: 10.1109/USNC-URSI-NRSM.2014.6928074Scopus ID: 2-s2.0-84911478605ISBN: 978-147993120-0 (print)OAI: oai:DiVA.org:kth-157949DiVA: diva2:773679
Conference
2014 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2014, 8 January 2014 through 11 January 2014, Boulder, United States
Note

QC 20141219

Available from: 2014-12-19 Created: 2014-12-18 Last updated: 2014-12-19Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Dahlgren, Hanna

Search in DiVA

By author/editor
Dahlgren, Hanna
By organisation
Space and Plasma Physics
Other Physics Topics

Search outside of DiVA

GoogleGoogle Scholar

doi
isbn
urn-nbn

Altmetric score

doi
isbn
urn-nbn
Total: 39 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • 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