Kärnavfalls

Kärnavfalls, also known as core collapse, is a phenomenon that occurs in the final stages of the life of a massive star. This process is characterized by the sudden and catastrophic implosion of the star's core, leading to a supernova explosion. The core collapse is triggered when the star's nuclear fuel is depleted, causing the core to become unstable and collapse under its own gravity.

During the core collapse, the core's density increases dramatically, reaching levels comparable to that of an atomic nucleus. This extreme density causes the core to become a neutron star or, in some cases, a black hole. The collapse is accompanied by a rebound shockwave that propagates outward, causing the star's outer layers to be expelled into space at high velocities.

The energy released during the core collapse and subsequent supernova explosion is immense, often outshining entire galaxies for brief periods. The ejected material, known as the supernova remnant, can be observed for thousands of years and provides valuable insights into the life cycle of stars and the formation of heavy elements in the universe.

Kärnavfalls is a critical process in astrophysics, as it plays a significant role in the evolution of galaxies and the distribution of elements throughout the cosmos. The study of core collapse supernovae and their remnants continues to be an active area of research, with astronomers using various observational techniques to unravel the mysteries of these explosive events.