Retreat and reformation of X-line during quasi-continuous tailward-of-the-cusp reconnection under northward IMF
2008 (English)In: Geophysical Research Letters, ISSN 0094-8276, Vol. 35, no 15, L15104- p.Article in journal (Refereed) Published
We present observations on 19-20 November 2006 by the Cluster spacecraft that were skimming the high-latitude dusk-flank magnetopause, which are consistent with more than one reconnection X-line present on the tailward side of the cusp under northward IMF. Evidence of quasi-continuous reconnection over 16 hours exists in the form of Alfvenic acceleration of magnetosheath ions found almost always when either of the satellites traversed the boundary. The data indicate that a dominant X-line was sunward of Cluster for most of the time, but ion velocity distributions consisting of two magnetosheath populations demonstrate that for part of the time, more than one X-line existed. Further, the motion of reconnected field lines shows that some X-line(s) retreated tailward. It is inferred that following the X-line retreat, another X-line reformed sunward of Cluster, leading tomultiple X-lines.
Place, publisher, year, edition, pages
2008. Vol. 35, no 15, L15104- p.
IdentifiersURN: urn:nbn:se:uu:diva-149351DOI: 10.1029/2008GL034767ISI: 000258338400003OAI: oai:DiVA.org:uu-149351DiVA: diva2:404696