Results 11 to 20 of about 1,653 (191)

Cusp structures: combining multi-spacecraft observations with ground-based observations [PDF]

open access: yesAnnales Geophysicae, 2003
Recent simultaneous observations of cusp structures with Polar, FAST and Interball revealed remarkably similar features at spacecraft crossing the cusp. Such stable cusp structures could be observed up to several hours only during stable solar wind
K. J. Trattner   +19 more
doaj   +1 more source

Comparison of multi-point measurements of current sheet structure and analytical models [PDF]

open access: yesAnnales Geophysicae, 2008
Current density profiles of 22 thin current sheets, crossed by four Cluster spacecraft in the magnetotail are compared with the self-consistent model of anisotropic 1-D equilibrium, including several species of quasi-adiabatic (transient) ions and ...
A. V. Artemyev   +9 more
doaj   +1 more source

Polar and Cluster observations of a dayside inverted-V during conjunction [PDF]

open access: yesAnnales Geophysicae, 2007
We investigate particle and fields data during a conjunction of the Polar and Cluster spacecraft. This conjunction occurs near the dayside cusp boundary layer when a dayside inverted-V was observed in the particle data of both satellites.
J. D. Menietti   +4 more
doaj   +1 more source

Dynamical processes in space: Cluster results [PDF]

open access: yesAnnales Geophysicae, 2013
After 12 years of operations, the Cluster mission continues to successfully fulfil its scientific objectives. The main goal of the Cluster mission, comprised of four identical spacecraft, is to study in three dimensions small-scale plasma structures ...
C. P. Escoubet   +6 more
doaj   +1 more source

An Integrated Nonlinear Analysis (INA) Software for Space Plasma Turbulence

open access: yesEarth and Space Science, 2023
We built an integrated nonlinear analysis software (INA)‐designed to study space plasma turbulence and intermittency. The MATLAB programming environment was used for the algorithmic development and implementation of methods for spectral analysis ...
Costel Munteanu   +2 more
doaj   +1 more source

Spatial and temporal characteristics of poloidal waves in the terrestrial plasmasphere: a CLUSTER case study [PDF]

open access: yesAnnales Geophysicae, 2007
Oscillating magnetic field lines are frequently observed by spacecraft in the terrestrial and other planetary magnetospheres. The CLUSTER mission is a very suitable tool to further study these Alfvén waves as the four CLUSTER spacecraft provide for an
S. Schäfer   +5 more
doaj   +1 more source

Cluster magnetotail observations of a tailward-travelling plasmoid at substorm expansion phase onset and field aligned currents in the plasma sheet boundary layer [PDF]

open access: yesAnnales Geophysicae, 2005
We present data from both ground- and space-based instruments for a substorm event which occurred on 5 October 2002, with an expansion phase onset time of 02:50 UT determined from the ground magnetometer data.
N. C. Draper   +17 more
doaj   +1 more source

Accuracy of multi-point boundary crossing time analysis [PDF]

open access: yesAnnales Geophysicae, 2011
Recent multi-spacecraft studies of solar wind discontinuity crossings using the timing (boundary plane triangulation) method gave boundary parameter estimates that are significantly different from those of the well-established single-spacecraft ...
J. Vogt   +3 more
doaj   +1 more source

Methods of Orbit Clustering of Serviced Spacecraft

open access: yesSystem technologies, 2019
When planning orbital service operations, it is important to rationally divide a set of orbits serviced by a spacecraft into subsets (clusters) of orbits. This article proposes a technique for clustering the orbits of serviced spacecraft in the event of their servicing by a reusable service spacecraft with an electric rocket low thrust engine.
Yurii Mykhailovych Holdshtein   +1 more
openaire   +2 more sources

Coordinated interhemispheric SuperDARN radar observations of the ionospheric response to flux transfer events observed by the Cluster spacecraft at the high-latitude magnetopause [PDF]

open access: yesAnnales Geophysicae, 2003
At 10:00 UT on 14 February 2001, the quartet of ESA Cluster spacecraft were approaching the Northern Hemisphere high-latitude magnetopause in the post-noon sector on an outbound trajectory. At this time, the interplanetary magnetic field incident
J. A. Wild   +16 more
doaj   +1 more source

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