Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
Collapse of a stellar core to a neutron star
These images are based on a three-dimensional, fully relativistic computer simulation computing the formation of a neutron star by the gravitational collapse of a stellar core. This event marks the end of a massive star that has exhausted all its fuel for nuclear fusion. The core, consisting of iron - the final product of the stellar fusion processes -, is collapsing under its own gravity as there is no pressure from nuclear fusion stabilizing the star. Such a core collapse is one of the possibilities to release a supernova explosion. In spite of many decades of research about supernovae they are not yet fully understood.
The images show the collapsing iron core of a massive star, illustrated by its mass density. During the collapse, the density increases (green and red) until the quantum mechanical degeneracy pressure of the neutrons stops the collapse - a fast rotating proto neutron star has formed which emits spiral gravitational waves caused by asymmetric distortions.
Credits: C. Ott (Max Planck Institute for Gravitational Physics), L. Rezzolla (Max Planck Institute for Gravitational Physics & Institute for Theoretical Physics, Frankfurt), R. Kähler (Max Planck Institute for Gravitational Physics & Zuse Institute Berlin)
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