A deep dynamo generating mercury's magnetic field

Article Abstract:

Mercury has a global magnetic field of internal origin, which is attributed to a dynamo operating in the fluid part of mercury's large iron core, but the low intensity of Mercury's magnetic field cannot be reconciled with an Earth-like dynamo. A numerical model of a dynamo driven by thermo-compositional convection associated with inner core solidification is presented that explains the observed structure and strength of Mercury's surface.

Numerical analysis, Mercury (Planet), Magnetic properties

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Resistance is futile

Article Abstract:

A new experiment is designed to describe a phenomenon, called the 'zero-resistance state' that is induced by the application of a magnetic field and microwave radiation. The results have supported the idea that the zero-resistance state emerges because the system desperate to avoid a state of negative resistance chooses to form a rather unusual, inhomogeneous current configuration.

New York, Analysis, Optical properties, Electrons, Microwaves, Oscillation, Oscillations, Structure

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A twist on periodicity at Saturn

Article Abstract:

The observations by the Cassini orbiter fixed with radio-emission clock provide evidence for Saturn's rotation period influenced by high speed of the solar wind.

Observations, Earth, Astronomical rotation, Saturn (Planet)

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