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The Substructure of a Flux Transfer Event Observed by the MMS SpacecraftOn 15 August 2015, MMS (Magnetospheric Multiscale mission), skimming the dusk magnetopause, detected an isolated region of an increased magnetic strength and bipolar Bn, indicating a flux transfer event (FTE). The four spacecraft in a tetrahedron allowed for investigations of the shape and motion of the FTE. In particular, high-resolution particle data facilitated our exploration of FTE substructures and their magnetic connectivity inside and surrounding the FTE. Combined field and plasma observations suggest that the core fields are open, magnetically connected to the northern magnetosphere from which high-energy particles leak; ion "D" distributions characterize the axis of flux ropes that carry old-opened field lines; counter streaming electrons superposed by parallel-heated components populate the periphery surrounding the FTE; and the interface between the core and draped regions contains a separatrix of newlyopened magnetic field lines that emanate from the X line above the FTE.
Document ID
20170003187
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hwang, K.-J. (Maryland Univ. Baltimore County Baltimore, MD, United States)
Sibeck, D. G. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Giles, B. L. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Pollock, C. J. (Denali Scientific, LLC Healy, AK)
Gershman, D. (Maryland Univ. College Park, MD, United States)
Avanov, L. (Maryland Univ. College Park, MD, United States)
Paterson, W. R. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Dorelli, J. C. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Ergun, R. E. (Colorado Univ. Boulder, CO, United States)
Russel, C. T. (California Univ. Los Angeles, CA, United States)
Strangeway, R. J. (California Univ. Los Angeles, CA, United States)
Mauk, B. (Johns Hopkins Univ. Laurel, MD, United States)
Cohen, I. J. (Johns Hopkins Univ. Laurel, MD, United States)
Torbert, R. B. (New Hampshire Univ. Durham, NH, United States)
Burch, J. L. (Southwest Research Inst. San Antonio, TX, United States)
Date Acquired
April 7, 2017
Publication Date
September 23, 2016
Publication Information
Publication: Geophysical Research Letters
Volume: 43
Issue: 18
ISSN: 0094-8276
Subject Category
Geophysics
Report/Patent Number
GSFC-E-DAA-TN41132
Funding Number(s)
CONTRACT_GRANT: NNG11PL02A
Distribution Limits
Public
Copyright
Other