Black holes are the evolutionary end to a massive star. Although it is hard to imagine , a black hole comes directly from a star. Stars come from dust and gas in the atmosphere , that heat up and start giving off radiation. These are known as protostars. A protostar will brighten and continually contract and rise in temperature. As the temperature increases the pressure increases which brings you to a point where the outward force balances the inward force of gravity. The dust soon vaporizes, and the gas turns opaque. Black holes are formed when a massive star or supernovae ends it's life. The process where the star evolves and then dies is called stellar evolution. At the end of a stars life it is involved in a supernovae explosion. This explosion burns away the elements in astar except for the iron core because as we know iron cannot burn.
When the iron core reaches a certain mass, a sequence of events is triggered. Gravity over rules the pressure that had been stabilizing it, and the iron core collapses. The core goes from the size of about five thousand miles to the small size of about twelve miles in less than a second.. At this point the star has reached singularity. Singularity is when a star is compressed to a p
Since we cannot se a black hole we must find other ways of detecting them. A black hole attracts matter, and although much of the matter is sucked into the black hole some is left orbiting around it. This matter forms an acctetion disk which heats up as it orbits at a high velocity around the black hole. The gas soon starts to radiate and give off x rays. These x rays are our key to detecting black holes. Using these rays, we can detect where the starting place of the x rays are.
The amount of energy released during the collapse is equivalent to the amount of energy released by one hundred stars in their ten billion year lifetimes. This amount of energy is extremely enormous, and most of it is sent into space by particles called neutrinos. A very small amount of this energy is sent into the envelope enclosing the star, and it causes the envelope to explode The energy deposited on the envelope creates an incredibly strong shock wave. As the shock waves go outward they heat up the envelope and induce explosive nuclear burning that ejects the envelope at about ten million miles per hour. The result of these event's leave a compact stellar remnant. This remnant is a neutron star or black hole. Only the most massive stars become black holes. The rest become less compressed bodies which are either white dwarfs or neutron stars.
Black holes are filled with many natural phenomenon's , gravity crushes and forms it. Light makes them so
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