Natalia Gómez-Pérez

TL;DR: Direct measurements of the thermal conductivity of solid iron at pressure and temperature conditions relevant to the cores of Mercury-sized to Earth-sized planets, using a dynamically laser-heated diamond-anvil cell indicate that Earth's geodynamo has persisted since the beginning of Earth's history.

TL;DR: In this paper, a global magnetohydrodynamic (MHD) model was used to simulate the magnetic field of the planet Mercury in the presence of the MESSENGER spacecraft.

TL;DR: In this paper, a negative feedback between the magnetospheric and the internal magnetic fields was used to explain the observed weakness of the magnetic field at the surface of the planet Mercury.

TL;DR: Numerical dynamo simulations show that the observed weakness of Mercury’s magnetic field could be explained by a negative feedback between the magnetospheric and the internal magnetic fields, compatible with the observations at Mercury.

TL;DR: In this article, the effect of radially variable electrical conductivities on planetary dynamo action using an electrical conductivity that decreases exponentially as a function of radius was investigated, and it was shown that numerical solutions with continuous, radially outward decreasing conductivity profiles result in strongly modified flow and magnetic field dynamics.