Publication at Faculty of Mathematics and Physics |
2009
Abstract
In this article, we present the first multispacecraft study of spatial scales of Langmuir wave packets in the terrestrial foreshock. We used data from the Wideband Data (WBD) instrument on the Cluster satellites.
To overcome instrumental constraints, we developed a statistical technique for matching observations on different spacecraft by comparison of their Fourier spectra. In this article, we demonstrate an application of the technique on one multispacecraft foreshock event, and we afterward use it on a larger data set comprising several Cluster foreshock crossings.