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
Observations of an Electron Diffusion Region in Symmetric Reconnection with Weak Guide Field
Nanchang Univ, Inst Space Sci & Technol, Nanchang, Jiangxi, Peoples R China.
Nanchang Univ, Inst Space Sci & Technol, Nanchang, Jiangxi, Peoples R China.
Nanchang Univ, Inst Space Sci & Technol, Nanchang, Jiangxi, Peoples R China.
Nanchang Univ, Inst Space Sci & Technol, Nanchang, Jiangxi, Peoples R China.
Show others and affiliations
2019 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 870, p. 1-9, article id 34Article in journal (Refereed) Published
Abstract [en]

The Magnetospheric Multiscale spacecraft encountered an electron diffusion region (EDR) in a symmetric reconnection in the Earth's magnetotail. The EDR contained a guide field of about 2 nT, which was 13% of the magnetic field in the inflow region, and its thickness was about 2 local electron inertial lengths. Intense energy dissipation, a super-Alfvenic electron jet, electron nongyrotropy, and crescent-shaped electron velocity distributions were observed in association with this EDR. These features are similar to those of the EDRs in asymmetric reconnection at the dayside magnetopause. Electrons gained about 50% of their energy from the immediate upstream to the EDR. Crescent electron distributions were seen at the boundary of the EDR, while highly curved magnetic field lines inside the EDR may have gyrotropized the electrons. The EDR was characterized by a parallel current that was carried by antiparallel drifting electrons that were probably accelerated by a parallel electric field along the guide field. These results reveal the essential electron physics of the EDR and provide a significant example of an EDR in symmetric reconnection with a weak guide field.

Place, publisher, year, edition, pages
2019. Vol. 870, p. 1-9, article id 34
Keywords [en]
magnetic reconnection, Sun: heliosphere
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:uu:diva-374435DOI: 10.3847/1538-4357/aaf16fISI: 000455043900001OAI: oai:DiVA.org:uu-374435DiVA, id: diva2:1282749
Available from: 2019-01-25 Created: 2019-01-25 Last updated: 2019-01-25Bibliographically approved

Open Access in DiVA

fulltext(5355 kB)63 downloads
File information
File name FULLTEXT01.pdfFile size 5355 kBChecksum SHA-512
f8fffde22201d507e0863caa1684c84f3a6f887fd16a13f663a383cfb57576a35ad9e515d733fc1d8ab9460e1cff02d1b1a6726f95a3d876e568ae44289d6779
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Khotyaintsev, Yuri V.
By organisation
Swedish Institute of Space Physics, Uppsala Division
In the same journal
Astrophysical Journal
Fusion, Plasma and Space Physics

Search outside of DiVA

GoogleGoogle Scholar
Total: 63 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

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 51 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