Search Publications
Initial results of high-latitude magnetopause and low-latitude flank flux transfer events from 3 years of Cluster observations
Russell, C. T.; Zhang, H.; Zong, Q. -G. +9 more
We present initial results from a statistical study of Cluster multispacecraft flux transfer event (FTE) observations at the high-latitude magnetopause and low-latitude flanks from February 2001 to June 2003. Cluster FTEs are observed at both the high-latitude magnetopause and low-latitude flanks for both southward and northward IMF. Among the 122…
Signature of Saturn's auroral cusp: Simultaneous Hubble Space Telescope FUV observations and upstream solar wind monitoring
Cowley, Stanley W. H.; Bunce, Emma J.; Clarke, John T. +3 more
Model simulations by Bunce et al. (2005a) have shown that direct precipitation of electrons in Saturn's dayside cusp regions is not capable of producing significant FUV aurora. Instead, they suggested the possibility that the FUV bright emissions sometimes observed near noon are associated with reconnection occurring at the dayside magnetopause, p…
Reconnection sites of spatial cusp structures
Yeoman, T. K.; Fuselier, S. A.; Reme, H. +4 more
The interconnection of the interplanetary magnetic field with the geomagnetic field is thought to be the dominant process for mass, energy, and momentum transfer from the magnetosheath into the magnetosphere. Downward precipitating ions from the reconnection site are observed in the cusp by polar orbiting satellites and exhibit sudden changes in t…
Dispersion analysis of low-frequency waves through the terrestrial bow shock
Glassmeier, K. -H.; Narita, Y.
We present dispersion relations of low-frequency waves observed upstream and downstream of the Earth's bow shock analyzing Cluster magnetometer measurements along an outbound orbit covering four regions: the foreshock, the outer, the middle, and the inner magnetosheath. The aim of our study is to better understand wave transmission, mode conversio…
Nonlinear Alfvén, magnetosonic, sound, and electron inertial waves in fluid formalism
Stasiewicz, K.
A fluid model of nonlinear electron and ion inertial waves in anisotropic plasmas is presented. The model has been verified for plasma beta (ratio of kinetic/magnetic pressures) in a range between 0.1 and 15. It is shown that warm plasmas support four types of nonlinear waves, which correspond to four linear modes, Alfvénic, magnetosonic, sound, a…
Ion distributions in Saturn's magnetosphere near Titan
Cravens, T. E.; Ledvina, S. A.; KecskeméTy, K.
Titan's interaction with Saturn's magnetosphere is studied using a combination of a three-dimensional (3-D) single-fluid magnetohydrodynamic (MHD) simulation and a test particle/Monte Carlo model. The MHD simulation includes an exosphere model based on the one used in the work of Cravens et al. (1998), simple ionospheric processes such as ion prod…
Heliospheric energetic particle observations during the October-November 2003 events
Livi, S.; Russell, C. T.; Lario, D. +4 more
The intense level of solar activity recorded from 19 October to 12 November 2003 led to unusually high energetic particle intensities observed throughout the heliosphere. The fleet of spacecraft distributed in the inner and outer heliosphere offers us the opportunity to study both the effects of these events in different regions of the heliosphere…
Reconstruction of the reconnection rate from Cluster measurements: First results
Penz, T.; Kubyshkin, I. V.; Nakamura, R. +6 more
A model of transient time-dependent magnetic reconnection is used to describe the behavior of nightside flux transfers (NFTEs) in the Earth's magnetotail. On the basis of the analytical approach to reconnection developed by Heyn and Semenov (1996) and Semenov et al. (2004a) we calculate the magnetic field and plasma bulk velocity time series obser…
Solar energetic electrons related to the 28 October 2003 flare
Krucker, S.; Mann, G.; Kunow, H. +4 more
We investigate the solar origin of near-relativistic electrons and protons during the X17.2/4B flare as observed by the Comprehensive Suprathermal and Energetic Particle Analyser (COSTEP) and Three-Dimensional Plasma (3DP) analyzer experiments on board the SOHO and Wind spacecraft. These observations are combined with ground- and space-based spect…
The k-filtering technique applied to wave electric and magnetic field measurements from the Cluster satellites
Sahraoui, Fouad; André, Mats; Cornilleau-Wehrlin, Nicole +2 more
The k-filtering technique is a method to characterize stationary fluctuations in space plasmas in terms of the wave energy distribution in the frequency and wave vector space. It has the ability to distinguish between wave modes of the same frequency in the spacecraft frame of reference, but with different wave vectors. This method is based on sim…