Capabilities of the wave telescope for multi-scale spacecraft configurations using a Vlasiator simulation

We present an analysis of the wave properties in Earth's foreshock and dayside magnetosphere in a Vlasiator global magnetospheric simulation, using the wave telescope analysis technique. Vlasiator is a Hybrid-Vlasov plasma simulation and treats electrons as a fluid while protons are described by distribution functions. In anticipation of future multi-scale spacecraft space plasma missions such as HelioSwarm or the proposed Plasma Observatory, artificial spacecraft constellations consisting of more than 4 satellites have been used to measure the electromagnetic field and plasma properties in the Vlasiator run. Using the wave telescope analysis technique - originally developed for the 4-spacecraft Cluster mission - power spectra in k-space are estimated, enabling the determination of properties of waves and transient phenomena from those multi-scale spacecraft data. We test different spacecraft configurations probing regions mainly in the foreshock and consider conversion to the plasma rest frame, dispersion analysis as well as spectrum filtering to account for the spatial Nyquist limit in k-space spectra.