Search Publications
On the error estimation of multi-spacecraft timing method
Zhang, H.; Zong, Q. -G.; Fu, S. Y. +4 more
The multi-spacecraft timing method, a data analysis technique based on four-point measurements to obtain the normal vector and velocity of an observed boundary, has been widely applied to various discontinuities in the solar wind and the magnetosphere studies. In this paper, we perform simulations to analyze the errors of the timing method by spec…
Rosetta swing-by at Mars - an analysis of the ROMAP measurements in comparison with results of 3-D multi-ion hybrid simulations and MEX/ASPERA-3 data
Lundin, R.; Fränz, M.; Edberg, N. J. T. +8 more
The Rosetta spacecraft flew by Mars at a distance of 260 km on 25 February 2007 during a gravity assist manoeuvre. During the closest approach (CA) the lander magnetometer ROMAP was switched on. The dataset taken during this swingby provides insight into the plasma environment around Mars: in addition to a pronounced bow shock crossing Rosetta rec…
Remote sensing of local structure of the quasi-perpendicular Earth's bow shock by using field-aligned beams
Lucek, E. A.; Kucharek, H.; Möbius, E. +4 more
Field-aligned ion beams (FABs) originate at the quasi-perpendicular Earth's bow shock and constitute an important ion population in the foreshock region. The bulk velocity of these FABs depends significantly on the shock normal angle, which is the angle between shock normal and upstream interplanetary magnetic field (IMF). This dependency may ther…
Concerning the occurrence pattern of flux transfer events on the dayside magnetopause
Sibeck, D. G.
We present an analytical model for the magnetic field perturbations associated with flux transfer events (FTEs) on the dayside magnetopause as a function of the shear between the magnetosheath and magnetospheric magnetic fields and the ratio of their strengths. We assume that the events are produced by component reconnection along subsolar reconne…
Comprehensive survey of Pc4 and Pc5 band spectral content in Cluster magnetic field data
Yeoman, T. K.; Clausen, L. B. N.
In the first part of this study we present two case studies of pulsations that, with the help of ground-based data, are identified as field line resonances (FLRs). These pulsations occurred at frequencies which belong to a set of frequencies that has been suggested to be preferred in the terrestrial magnetosphere (CMS frequencies). We go on to sho…
Cluster view of the plasma sheet boundary layer and bursty bulk flow connection
Kistler, L. M.; Rème, H.; Lennartsson, O. W.
The high-latitude boundaries of the plasma sheet (PSBL) are dynamic latitude zones of recurring and transient (minutes to tens of minutes) earthward and magnetic field-aligned bursts of plasma, each being more or less confined in longitude as well, whose ionic component is dominated by protons with flux, energies and density that are consistent wi…
Kinetic thin current sheets: their formation in relation to magnetotail mesoscale turbulent dynamics
Domrin, V. I.; Kropotkin, A. P.
Dynamics of the magnetotail plasma sheet (PS) features nonlinear structures on two totally different scales. There are very thin current sheets (CS) on kinetic scale of the ion gyroradius. And there are intense plasma flow and magnetic field variations on mesoscales (a few earth radii); those are interpreted as mostly 2-D MHD turbulence. On the ot…
Quasiperiodic ULF-pulsations in Saturn's magnetosphere
Krupp, N.; Dougherty, M. K.; Glassmeier, K. -H. +2 more
Recent magnetic field investigations made onboard the Cassini spacecraft in the magnetosphere of Saturn show the existence of a variety of ultra low frequency plasma waves. Their frequencies suggest that they are presumably not eigenoscillations of the entire magnetospheric system, but excitations confined to selected regions of the magnetosphere.…
Magnetosheath excursion and the relevant transport process at the magnetopause
Dandouras, I.; Rème, H.; Cao, J. B. +5 more
A large-amplitude excursion of the magnetosheath (MS) in quiet solar wind conditions on 17 March 2004 was recorded simultaneously by the Cluster and TC-1 spacecraft. During this period, the IMF Bz was entirely northward. The coherence between the bow shock motion and magnetopause (MP) motion is revealed and the excursion velocities of t…
Modelling of mirror mode structures as propagating slow magnetosonic solitons
Stasiewicz, K.; Cheng, C. Z.
Cluster measurements in the magnetosheath with spacecraft separations of 2000 km indicate that magnetic pulsations interpreted as mirror mode structures are not frozen in plasma flow, but do propagate with speeds of up to ~50 km/s. Properties of these pulsations are shown to be consistent with propagating slow magnetosonic solitons. By using nonli…