Search Publications
Low Frequency Waves at and Upstream of Collisionless Shocks
Wilson, L. B.
This chapter focuses on the range of low frequency electromagnetic modes observed at and upstream of collisionless shocks in the heliosphere. It discusses a specific class of whistler mode wave observed immediately upstream of collisionless shock ramps, called a whistler precursor. Though these modes have been (and are often) observed upstream of …
The Acceleration Region of Stable Auroral Arcs
Karlsson, T.
Plasma Wave Observations at Earth, Jupiter, and Saturn
Gurnett, D. A.; Hospodarsky, G. B.; Kurth, W. S. +5 more
Plasma wave emissions have been detected at all of the planets that have been visited by spacecraft equipped with plasma wave instruments (Mercury will be explored by the plasma wave instrument on BepiColombo Mercury Magnetospheric Orbiter in 2022.). Many of these emissions are believed to play a role in the acceleration of energetic particles, es…
Cold Ion Outflow as a Source of Plasma for the Magnetosphere
Nilsson, H.; André, M.; Haaland, S. E. +9 more
Multipoint Observations of Ionic Structures in the Plasmasphere by CLUSTER-CIS and Comparisons With IMAGE-EUV Observations and With Model Simulations
Parks, George K.; Dandouras, Iannis; Vallat, Claire +12 more
The 4 Cluster spacecraft orbit the Earth in a highly eccentric polar orbit at 4 RE perigee, and this permits them to sample the ring current, the radiation belts and the outer plasmasphere. Data provided by the Cluster Ion Spectrometry (CIS) instruments are used to analyze Cluster crossings of the plasmasphere. CIS is capable of obtaini…
Energetic ions in the high latitude boundary layer of the magnetosphere—Rapid/Cluster observation
Zong, Q. -G.; Daly, P.; Fritz, T. A. +1 more
The thrust of this paper concentrates on the energetic ion behaviour near the high latitude boundary layer of the magnetosphere during both IMF southward and northward conditions. On December 19, 2000, an energetic ion layer has been observed in the high latitude boundary region just outside the magnetosphere during IMF southward. However, on Janu…
Cluster magnetic field observations of magnetospheric boundaries
Balogh, A.; Horbury, T. S.; Lucek, E. A. +7 more
Early Cluster magnetic field observations of boundaries and boundary layers in the near-Earth environment are reviewed. By combining data from four spacecraft, typically separated by ∼600 km, the scale, orientation and motion of structures can be deduced. Early results from the magnetic field investigation are reviewed, such as estimates of the or…
The 3-D Plasma Distribution Function Analyzers With Time-of-Flight Mass Discrimination for Cluster, FAST, and Equator-S
Balsiger, H.; Klecker, B.; Kistler, L. M. +39 more
A similar time-of-flight plasma analyzer system will be flown as CODIF (COmposition and DIstribution Function analyzer) on the four Cluster spacecraft, as ESIC (Equator-S Ion Composition instrument) on Equator-S, and as TEAMS (Time-of-flight Energy Angle Mass Spectrograph) on FAST. These instruments will for the first time allow the 3-dimensional …
UV Rejection Design and Performance of the PEACE Electrostatic Analyzers
Alsop, C.; Scott, S.; Free, L.
The Plasma Electron and Current Experiment, PEACE, electrostatic analyzers are designed to measure electrons from 0.6 eV to 26,400 eV and will be directly exposed to sunlight in their operational environment. To minimize solar background counts, generated by direct interaction of the solar UV with the microchannel plate detectors or by the generat…
The Electron Drift Technique for Measuring Electric and Magnetic Fields
Torbert, R. B.; Quinn, J. M.; Paschmann, G. +2 more
The electron drift technique is based on sensing the drift of a weak beam of test electrons that is caused by electric fields and/or gradients in the magnetic field. These quantities can, by use of different electron energies, in principle be determined separately. Depending on the ratio of drift speed to magnetic field strength, the drift velocit…