Search Publications
Interactions of the heliospheric current and plasma sheets with the bow shock: Cluster and Polar observations in the magnetosheath
Russell, Christopher T.; Farrugia, Charles J.; Scudder, Jack D. +7 more
On 12 March 2001, the Polar and Cluster spacecraft were at subsolar and cusp latitudes in the dayside magnetosheath, respectively, where they monitored the passage by Earth of a large-scale planar structure containing the high-density heliospheric plasma sheet (HPS) and the embedded current sheet. Over significant intervals, as the magnetic hole o…
Effects of the guard electrode on the photoelectron distribution around an electric field sensor
Miyake, Y.; Usui, H.; Kojima, H.
We have developed a numerical model of a double-probe electric field sensor equipped with a photoelectron guard electrode for the particle-in-cell simulation. The model includes typical elements of modern double-probe sensors on, e.g., BepiColombo/MMO, Cluster, and THEMIS spacecraft, such as a conducting boom and a preamplifier housing called a pu…
Hall MHD simulations of collisionless multiple X line reconnection
Liu, C. X.; Jin, S. P.; Wei, F. S.
A Hall MHD simulation of multiple X line reconnection, in which a diffusion region around the standing X line and the moving plasmoids are involved, is presented. The observed features of Hall magnetic and electric fields in the diffusion region and the direction reversal of the electron flow in the vicinity of the magnetic separatrices are displa…
Wave signatures and electrostatic phenomena above aurora: Cluster observations and modeling
Dandouras, I.; De Keyser, J.; Maggiolo, R. +1 more
This paper reports Cluster high-altitude observations above the acceleration region of a typical monopolar electric field event at the plasma sheet boundary. The observations reveal both characteristics of waves and signatures of electrostatic acceleration. The observations can be interpreted in terms of low-frequency transverse magnetic waves on …
Correction to “Global magnetohydrodynamic simulation of reconnection and turbulence in the plasma sheet”
Goldstein, Melvyn L.; El-Alaoui, Mostafa; Walker, Raymond J. +3 more
Abstract Available from http://www.agu.org
Reduced magnetic helicity behavior in different plasma regions of near-Earth space
Perri, S.; Carbone, V.; Yordanova, E.
We present a comparative study of the scaling laws of a signed measure calculated from the reduced magnetic helicity from Cluster observations in three different near-Earth plasma regions: solar wind, foreshock, and magnetosheath. The reduced magnetic helicity provides information about the handedness of the magnetic field, which can be related to…
Survey of ion plasma parameters in Saturn's magnetosphere
Thomsen, M. F.; Tokar, R. L.; Reisenfeld, D. B. +6 more
A survey of the bulk plasma ion properties observed by the Cassini Plasma Spectrometer instrument over roughly the first 4.5 years of its mission in orbit around Saturn is presented. The moments (density, temperature, and flow velocity) of the plasma distributions below 50 keV have been computed by numerical integration of the observed counts in t…
Average properties of the magnetic reconnection ion diffusion region in the Earth's magnetotail: The 2001-2005 Cluster observations and comparison with simulations
Eastwood, J. P.; Phan, T. D.; Øieroset, M. +1 more
Magnetic reconnection plays a key role in the circulation of plasma through the Earth's magnetosphere. As such, the Earth's magnetotail is an excellent natural laboratory for the study of reconnection and in particular the diffusion region. To address important questions concerning observational occurrence rates and average properties, the Cluster…
A three-dimensional asymmetric magnetopause model
Wang, Y. L.; Zhang, X. X.; Lin, R. L. +2 more
A new three-dimensional asymmetric magnetopause model has been developed for corrected GSM coordinates and parameterized by the solar wind dynamic and magnetic pressures (Pd + Pm), the interplanetary magnetic field (IMF) Bz, and the dipole tilt angle. On the basis of the magnetopause crossings from Geotail, IMP 8, …
A study of solar energetic particle events of 1997-2006: Their composition and associations
Cane, H. V.; Richardson, I. G.; von Rosenvinge, T. T.
We examined the properties and associations of 280 solar proton events that extended above 25 MeV and occurred in the years 1997-2006. The properties include early peak intensities of five species over several energy ranges and the intensity-time profiles. Solar event associations were made for as many events as possible. The solar parameters dete…