First results obtained by the Cluster STAFF experiment

By N. Cornilleau-Wehrlin, G. Chanteur, S. Perraut, L. Rezeau, P. Robert, Alain Roux, C. Villedary, P. Canu, M. Maksimović, Y. Conchy and 14 more. 2003

225 citations recorded by the source corpus.

Abstract. The Spatio Temporal Analysis of Field Fluctuations (STAFF) experiment is one of the five experiments, which constitute the Cluster Wave Experiment Consortium (WEC). STAFF consists of a three-axis search coil magnetometer to measure magnetic fluctuations at frequencies up to 4 kHz, a waveform unit (up to either 10 Hz or 180 Hz) and a Spectrum Analyser (up to 4 kHz). The Spectrum Analyser combines the 3 magnetic components of the waves with the two electric components measured by the Electric Fields and Waves experiment (EFW) to calculate in real time the 5 × 5 Hermitian cross-spectral matrix at 27 frequencies distributed logarithmically in the frequency range 8 Hz to 4 kHz. The time resolution varies between 0.125 s and 4 s. The first results show the capabilities of the experiment, with examples in different regions of the magnetosphere-solar wind system that were encountered by Cluster at the beginning of its operational phase. First results obtained by the use of some of the tools that have been prepared specifically for the Cluster mission are described. The characterisation of the motion of the bow shock between successive crossings, using the reciprocal vector method, is given. The full characterisation of the waves analysed by the Spectrum Analyser, thanks to a dedicated program called PRASSADCO, is applied to some events; in particular a case of very confined electromagnetic waves in the vicinity of the equatorial region is presented and discussed. Key words. Magnetospheric physics (magnetopause, cusp and boundary layer) – Space plasma physics (waves and instabilities; shock waves)

Subfields: Astronomy and Astrophysics, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/72444822e42f68b392da168c9810c33f1361d657

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Citations in the corpus

The Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) on RBSP (2013, methodology): “Second, the waveforms can be analyzed in the Waves FFT Engine coprocessors to produce spectral matrices similar to those computed on the Cluster STAFF instrument (Cornilleau-Wehrlin et al. 2003) which can be generalized to other instances (Santolik et al. 2001).”
The Search Coil Magnetometer for THEMIS (2008, methodology): “A description of the design for Cluster can be found in [4,5].”
The Search-Coil Magnetometer for MMS (2016, background): “While Cluster satellites follow a polar orbit, MMS spacecraft (s/c hereafter) will have an equatorial orbit in order to optimize the crossing of the key regions such as the equatorial subsolar region and the central region of the magnetotail.”
First Results of the THEMIS Search Coil Magnetometers (2008, background): “More recently Cluster observations from the STAFF instrument [7] gave evidence for very large amplitude ( ' 1 nT) waves in the whistler mode range (f ci <f<fce), emitted in the magnetotail during substorms [16].”
Systematic analysis of equatorial noise below the lower hybrid frequency (2004, methodology): “STAFF-SA was designed for onboard calculation of power-spectral densities, mutual phases, and coherence relations of three orthogonal magnetic components and two electric components (Cornilleau-Wehrlin et al., 1997, 2003).”
Small-Scale Energy Cascade of the Solar Wind Turbulence (2007, methodology): “Magnetic field fluctuations are measured by the search coils (SC) of the STAFF experiment with 0.04 s time resolution (Cornilleau-Wehrlin et al. 2003).”