Extended Data Fig. 2: Output of our nominal model with inner core crystallization.
From: A modern dynamo at Triton as a consequence of its capture by Neptune
a, Thermal evolution of the mantle and core, with illustrative ice and ocean layers drawn for scale but not modelled in detail. Temperature contours are plotted in the mantle, whereas shading is used in the core to denote when the core is liquid but stagnant (that is, no convection) and when the Earth-like inner core forms. b, Heat flow across the core–mantle boundary (red) compared to the adiabatic heat flow in the core (black). c, Temperature at the core–mantle boundary (red) compared to that at the mid-mantle depth (orange). d, Magnetic Reynolds number in the core. e, Surface strength of the dipolar component of the magnetic field on the equator.
