uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Observation of double layer in the separatrix region during magnetic reconnection
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
Show others and affiliations
2014 (English)In: Geophysical Research Letters, ISSN 0094-8276, Vol. 41, no 14, 4851-4858 p.Article in journal (Refereed) Published
Abstract [en]

We present in situ observation of double layer (DL) and associated electron measurement in the subspin time resolution in the separatrix region during reconnection for the first time. The DL is inferred to propagate away from the X line at a velocity of about ion acoustic speed and the parallel electric field carried by the DL can reach -20 mV/m. The electron displays a beam distribution inside the DL and streams toward the X line with a local electron Alfven velocity. A series of electron holes moving toward the X line are observed in the wake of the DL. The identification of multiple similar DLs indicates that they are persistently produced and therefore might play an important role in energy conversion during reconnection. The observation suggests that energy dissipation during reconnection can occur in any region where the DL can reach.

Place, publisher, year, edition, pages
2014. Vol. 41, no 14, 4851-4858 p.
National Category
Fusion, Plasma and Space Physics Physical Sciences
URN: urn:nbn:se:uu:diva-232072DOI: 10.1002/2014GL061157ISI: 000340536000007OAI: oai:DiVA.org:uu-232072DiVA: diva2:746599
Available from: 2014-09-13 Created: 2014-09-12 Last updated: 2014-09-13Bibliographically approved

Open Access in DiVA

No full text

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
Geophysical Research Letters
Fusion, Plasma and Space PhysicsPhysical Sciences

Search outside of DiVA

GoogleGoogle Scholar
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: 128 hits
ReferencesLink to record
Permanent link

Direct link