The eruptive evolution of the Galilean satellites - Implications for the ancient magnetic field of Jupiter

Physics

Scientific paper

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Galilean Satellites, Jupiter (Planet), Paleomagnetism, Planetary Evolution, Planetary Magnetic Fields, Callisto, Electrolysis, Europa, Ganymede, Ice

Scientific paper

The theory of the Jupiter-sun system as a limiting case of a close binary star assumes the initial relative ice abundances in all Galilean satellites to be equal. The theory indicates that the satellites move in the Jovian magnetosphere so that the unipolar current flowing through them subjected their ices to volumetric electrolysis; explosions of the electrolysis products caused the loss of ices. An analysis of the magnetic field changes required to create modern ice abundances in the satellite showed that the initial field of Jupiter was 100 times stronger than the present-day field; the field had to decrease exponentially with (0.6-1)Gyr to accumulate energy needed for the explosion of Ganymede and Europa envelopes.

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