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On the estimation of the current density in space plasmas: Multi- versus single-point techniques

Sorriso-Valvo, Luca; Perri, Silvia; Malara, Francesco +2 more

Thanks to multi-spacecraft mission, it has recently been possible to directly estimate the current density in space plasmas, by using magnetic field time series from four satellites flying in a quasi perfect tetrahedron configuration. The technique developed, commonly called ;curlometer; permits a good estimation of the current density when the ma…