Two Distinct Current Sheet Configurations in the Jovian Magnetotail

The current sheet, a thin layer of strong plasma currents, plays a crucial role in magnetotail dynamics. It is a primary host of plasma instabilities that drive magnetic reconnection and charged particle acceleration. This study investigates the kinetic peculiarities of current sheets observed within the Jovian night‐side magnetosphere (magnetotail and magnetodisk) and provides a comparative analysis with those observed in the near‐Earth magnetotail. Specifically, we focus on current sheets with a force‐free magnetic field configuration, where the main current is carried by field‐aligned electrons. We demonstrate a strong similarity between such current sheets observed in the Earth's and Jovian magnetotails, despite significant differences in the energy ranges of field‐aligned electron populations: keV in Earth's magnetotail and 1–50 keV in the Jovian night‐side magnetosphere. We discuss the potential origins of these electron populations in the context of field‐aligned acceleration mechanisms unique to each magnetosphere.