Broadband Alfvén-type emissions near Earth and Jupiter observed in spacecraft’s data

Abstract

In this paper properties of broadband Alfvén-type emissions, which have a fine periodic structure from the Juno and Van Allen Probe A spacecraft data, near Jupiter and Earth are compared. Based on Van Allen Probe A multicomponent wave measurements, the connection between periodic bursts in the frequency-time spectrum and the spacecraft spinning has been confirmed. It was concluded that magnetic emissions have linear polarization in the azimuthal direction along to $L=\mathrm{const}$ shell (toroidal polarization).