Juha Vierinen

Estimating the source altitude of auroral precipitation from dispersed Alfvén waves in the dayside ionosphere

Abstract. The VISIONS-2 sounding rockets performed in-situ measurements of the active dayside auroral region. Numerous broadband dispersed signatures up to keV energies are visible in the electron electrostatic analyser data, typical of Alfvénic precipitation. In order to charact...