Cluster as current sheet surveyor in the magnetotail
نویسندگان
چکیده
منابع مشابه
Double discontinuities at the magnetotail plasma sheet-lobe boundary
A double discontinuity is a compound structure composed of a slow shock layer and an adjoining rotational discontinuity layer on the postshock side. We use highresolution data from Geotail and Wind spacecraft to examine the interior structure within the finite thickness of the discontinuity at the plasma sheet-lobe boundary and found that recognizable MHD structures at the boundary can be stand...
متن کاملCurrent sheet flapping motion and structure observed by Cluster
[1] Fast vertical flapping oscillations of the plasma sheet have been observed by Cluster on September 26, 2001. The flapping motion had vertical speeds exceeding 100 km/s, an amplitude in excess of 1 RE and a quasiperiod of 3 min. The current sheet was mostly tilted in the Y-Z plane (with the tilt sometimes exceeding 45 ). The waves had the properties of a kink mode and propagated toward the d...
متن کاملIdentifying the magnetotail lobes with Cluster magnetometer data
We describe a novel method for identifying times when a spacecraft is in Earth’s magnetotail lobes solely using magnetometer data. We propose that lobe intervals can be well identified as times when the magnetic field is strong and relatively invariant, defined using thresholds in the magnitude of BX and the standard deviation σ of the magnetic field magnitude. Using data from the Cluster space...
متن کاملAnalyses on the Geometrical Structure of Magnetic Field in the Current Sheet Based on Cluster Measurements
The geometrical structure of the magnetic field is a critical character in the magnetospheric dynamics. Using the magnetic field data measured by the Cluster constellation satellites, the geometrical structure including the curvature radius, directions of curvature and normal of the osculating planes of the magnetic field lines within the current sheet/neutral sheet have been investigated. The ...
متن کاملObservations of energetic electrons E 200 keV in the Earth's magnetotail Plasma sheet and Fireball observations
With the California Institute of Technology electron/isotope spectrometer (EIS) aboard the earthorbiting spacecraft Imp 8, intense energetic electron events (E >• 200 keV) have been observed at • 30 R• in the magnetotail on 13 of 28 magnetotail passes. In one class of events, peak absolute intensitiesj(E >• 200 keV) = 10a-10 • el (cm ø' s sr) -• are detected; the differential energy spectra for...
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ژورنال
عنوان ژورنال: Annales Geophysicae
سال: 2013
ISSN: 1432-0576
DOI: 10.5194/angeo-31-1605-2013