Search Publications

Wavelength and direction filtering by magnetic measurements at satellite arrays: Generalized minimum variance analysis

Glassmeier, K. H.; Motschmann, U.; Southwood, D. J. +2 more

The main goal of the Cluster mission, consisting of four identical spacecraft, is the spatial resolution of plasma structures. For the determination of the wave vectors of a wave field from four positions, classical Fourier analysis is inappropriate. We develop a generalized minimum variance technique which gives a high wave vector resolution thou…

Determination of interstellar pickup ion distributions in the solar wind with SOHO and Cluster

Möbius, E.; Lee, M. A.; Rucinski, D. +1 more

Over the last 10 years, the experimental basis for the study of the local interstellar medium has been substantially enhanced by the direct detection of interstellar pickup ions and of interstellar neutral helium within the heliosphere. Pickup ions can be studied for a wide range of interstellar species. However, currently the accuracy of the meth…

Wave field analysis by magnetic measurements at satellite arrays: generalized minimum variance analysis

Glassmeier, K. H.; Motschmann, U.; Southwood, D. J. +1 more

The main goal of the CLUSTER mission with four identical spacecraft is the spatial resolution of plasma structures. For the determination of the wave vectors of a wave field from four positions classical Fourier analysis is inappropriate. We develop a generalized minimum variance technique which gives a high wave vector resolution though the spati…

Analysis of non-planar structures with multipoint measurements

Balogh, A.; Dunlop, M. W.; Motschmann, U. +2 more

The advent of multi-spacecraft space missions like CLUSTER provides a new challenge for maximising the information return from data taken of complex magnetic field structures in the Earth's plasma environment using a spacecraft magnetometer. Most challenging are those structures which are not amenable to single spacecraft analysis techniques such …