Cosmic black holes can revive 'zombie' stars

Scientists discovered that some black holes can revive dead stars and then destroy them.

Black holes are invisible 'objects' in space, where gravity is so great that it draws everything inside, including light. So far, all black holes astronomers have found are extremely large, as big as hundreds of thousands or even hundreds of billions of times the size of the Sun, two extremely small, less than hundreds. Sun time.

Astronomers have not classified any black holes in the average category, but that doesn't mean they don't exist.

Supercomputer simulations show that what happens when a star dies near a black hole: The images in the above row show the density and the lower image shows the temperature.

A group of scientists at the Livermore Lawrence National Laboratory, California, USA, suspects that medium-sized black holes have the right gravitational pull to activate white dwarfs, or These are about the size of the Sun but are out of nuclear energy.

To test their assumptions, they ran simulations on the supercomputer dozens of different collision scenarios that could occur when these stars approached medium-sized black holes. The results show that whenever a Goldilocks black hole approaches, the star revives.

The gravitational pull of the black hole causes the dead star's material to merge into the masses of calcium and iron, the closer it gets to the black hole, the more iron the star will die. This is called nuclear synthesis and it will revive the star that once died.

Scientists also discovered that when the star is alive, it will create electromagnetic waves that near-Earth receivers can capture, meaning we can 'see' the phenomenon. Where to find and find a black hole makes the star revive.

However, the resurrected star will not shine forever. The black hole brings life to the star and will destroy it again. The scientists explained that because when the globular star approaches the black hole, the tidal force begins to compress the star in a direction perpendicular to the orbit and activates it to revive. But then within the orbital plane, these gravities stretch that star and tear it apart.

The black hole, or monster that absorbs all matter, is still full of mysterious power.