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  • Hwang, K. -JSouthwest Research Institute, , San Antonio, TX, USA (author)

Small-Scale Flux Transfer Events Formed in the Reconnection Exhaust Region Between Two X Lines

  • Article/chapterEnglish2018

Publisher, publication year, extent ...

  • 2018
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-371410
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-371410URI
  • https://doi.org/10.1029/2018JA025611DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • We report MMS observations of the ion-scale flux transfer events (FTEs) that may involve two main X lines and tearing instability between the two X lines. The four spacecraft detected multiple isolated regions with enhanced magnetic field strength and bipolar B-n signatures normal to the nominal magnetopause, indicating FTEs. The currents within the FTEs flow mostly parallel to B, and the magnetic tension force is balanced by the total pressure gradient force. During these events, the plasma bulk flow velocity was directed southward. Detailed analysis of the magnetic and electric field and plasma moments variations suggests that the FTEs were initially embedded within the exhaust region north of an X line but were later located southward/downstream of a subsequent X line. The cross sections of the individual FTEs are in the range of similar to 2.5-6.8 ion inertial lengths. The observations suggest the formation of multiple secondary FTEs. The presence of an X line in the exhaust region southward of a second X line results from the southward drift of an old X line and the reformation of a new X line. The current layer between the two X lines is unstable to the tearing instability, generating multiple ion-scale flux-rope-type secondary islands.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Sibeck, D. G.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA (author)
  • Burch, J. L.Southwest Res Inst, San Antonio, TX 78238 USA (author)
  • Choi, E.Southwest Res Inst, San Antonio, TX 78238 USA (author)
  • Fear, R. C.Univ Southampton, Phys & Astron, Southampton, Hants, England (author)
  • Lavraud, B.Univ Toulouse, CNRS, UPS, Inst Rech Astrophys & Planetol,CNES, Toulouse, France (author)
  • Giles, B. L.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA (author)
  • Gershman, D.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA (author)
  • Pollock, C. J.Denali Sci LLC, Fairbanks, AK USA (author)
  • Eastwood, J. P.Imperial Coll, London, England (author)
  • Khotyaintsev, Yuri V.Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen(Swepub:uu)ykh28990 (author)
  • Escoubet, PhilippeEuropean Space Agcy, Noordwijk, Netherlands (author)
  • Fu, H.Beihang Univ, Sch Space & Environm, Beijing, Peoples R China (author)
  • Toledo-Redondo, S.European Space Agcy, ESAC, Madrid, Spain (author)
  • Torbert, R. B.Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA (author)
  • Ergun, R. E.Univ Colorado Boulder, Lab Atmospher & Space Phys, Boulder, CO USA (author)
  • Paterson, W. R.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA (author)
  • Dorelli, J. C.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA (author)
  • Avanov, L.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA;Goddard Planetary Heliophys Inst, Baltimore, MD USA (author)
  • Russell, C. T.Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA (author)
  • Strangeway, R. J.Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA (author)
  • Southwest Research Institute, , San Antonio, TX, USANASA, Goddard Space Flight Ctr, Greenbelt, MD USA (creator_code:org_t)

Related titles

  • In:Journal of Geophysical Research - Space Physics123:10, s. 8473-84882169-93802169-9402

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