umu.sePublications
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
The use of the power density for identifying reconnection regions
Umeå University, Faculty of Science and Technology, Department of Physics.
Umeå University, Faculty of Science and Technology, Department of Physics.
Show others and affiliations
2015 (English)In: Journal of Geophysical Research - Space Physics, ISSN 2169-9380, E-ISSN 2169-9402, Vol. 120, no 10, 8644-8662 p.Article in journal (Refereed) Published
Resource type
Text
Abstract [en]

In the vicinity of magnetic reconnection, magnetic energy is transferred into kinetic energy. A reconnection region hence corresponds to a load, and it should manifest itself as large and positive values of the power density, E·J ≫ 0, where E is the electric field and J the current density. In this article we analyze Cluster plasma sheet data from 2001–2004 to investigate the use of the power density for identifying possible magnetic reconnection events from large sets of observed data. From theoretical arguments we show that an event with   pW/m3 in the Earth's magnetotail observed by the Cluster instruments (X <− 10RE and  ) is likely to be associated with reconnection. The power density can be used as a primary indicator of potential reconnection regions, but selected events must be reviewed separately to confirm any possible reconnection signatures by looking for other signatures such as Hall electric and magnetic fields and reconnection jets. The power density can be computed from multispacecraft data, and we argue that the power density can be used as a tool for identifying possible reconnection events from large sets of data, e.g., from the Cluster and the Magnetospheric Multiscale missions.

Place, publisher, year, edition, pages
2015. Vol. 120, no 10, 8644-8662 p.
Keyword [en]
magnetic reconnection region, power density, plasma sheet, cluster, MMS
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:umu:diva-113869DOI: 10.1002/2015JA021535ISI: 000366135200034OAI: oai:DiVA.org:umu-113869DiVA: diva2:890968
Available from: 2016-01-05 Created: 2016-01-04 Last updated: 2017-06-14Bibliographically approved

Open Access in DiVA

fulltext(14922 kB)3 downloads
File information
File name FULLTEXT01.pdfFile size 14922 kBChecksum SHA-512
a387d705d6ec00b3b5db401b3cf12f43d2d8c290c47f355493f9bb2220ab1659ff9262d986a873c0a492526d14beab2d765c1f4ee1348fbfe3584d29c4db2717
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Hamrin, MariaPitkänen, Timo
By organisation
Department of Physics
In the same journal
Journal of Geophysical Research - Space Physics
Astronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar
Total: 3 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 189 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