turbulent convection tagged posts

Different stars can exhibit different levels of activity. The Sun’s signs of solar activity are rather feeble on an astronomical scale. Other stars are up to ten times more active. While researchers have identified the magnetic fields generated in the interior of stars in a dynamo process as drivers of activity, the exact workings of this dynamo are unclear. Scientists now find that a common, turbulence-dependent dynamo mechanism plays a crucial role for stellar activity in all stages of stellar evolution.

In their interiors, stars are structured in a layered, onion-like fashion. In those with solar-like temperatures, the core is followed by the radiation zone...

Magnetohydrodynamic turbulence powered by neutrino-driven convection behind the stalled shock of a core-collapse supernova simulation. This simulation shows that the presence of rotation and weak magnetic fields dramatically impacts the development of the supernova mechanism as compared to non-rotating, non-magnetic stars. The nascent neutron star is just barely visible in the center below the turbulent convection. Credit: Sean M. Couch, Michigan State University

Michigan State University researchers are using Mira to perform large-scale 3D simulations of the final moments of a supernova’s life cycle...