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Creat de baaron, 18 Ianuarie 2006, 11:18:00

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Millions of Parallel Universes created through accretion disc surrounding fast pulsar neutron stars
Fast spinning neutron stars ? the ultimate Black Holes are the source of millions of Parallel Universes. These Parallel Universes are being formed right now. It is possible new big bangs are happening as you read this article. And the number of new parallel Universes are endless.
Neutron stars are left behind following supernova type II explosions. They are the collapsed cores of massive stars. Although they were predicted by theory in the 1930s, it was thought that they would be undetectable because of their small size. A class of objects, which became known as pulsars, was discovered in the 1960s. They were rapidly pulsating radio sources and it was swiftly shown that the only objects, which could produce such behaviour, were spinning neutron stars. These spinning neutron stars behave in a similar way to lighthouses. Although lighthouses appear to flash on and off, it is an illusion produced by a rotating light. When a beam of light sweeps across the outline of sight we see the light appear to flash on and then off again. In this same way, the beam of radiation is swept through space by a pulsar. As it crosses our line of sight from Earth, we receive a pulse of radiation. The mechanism from producing this radiation is uncertain, at present. Also uncertain is the method for confining the radiation in such well-collimated beams.

After a supernova explosion, the neutron star is left spinning at high frequencies. For instance, the pulsar in the center of the crab nebula, which is the remains of a star which went supernova in 1054, is spinning so fast that it flashes thirty times a second. The fastest pulsars are known a millisecond pulsars and can spin at hundreds of revolutions per second. These are, in fact, old pulsars which have been 'spun up'' by accretion from nearby stars. This 'spinning up'' process is similar to the way in which material is funnelled onto white dwarfs in binary star systems. Because of the properties of degenerate matter, the more mass a neutron star accumulates, the smaller it shrinks. In the same way as an ice skater spins faster when he tucks in his arms, so the smaller a neutron star becomes, the faster it spins.
This process of spinning up a neutron star requires an accretion disc to be formed around it. Around protostars, the accretion disc is the site of Parallel Universe formation. May years back, scientists thought that these are planets around Black Holes. Now they are realizing that these are really Parallel Universes.
A disc-like structure of dust and gas which forms around the massive object at the center of a region undergoing gravitational collapse. It is caused because the regions of collapse are not stationary and move through space. Specifically they are in orbit around the center of the galaxy. Thus, they have angular momentum and as they fall into the potential well of the massive object, instead of falling straight onto the central body, they spiral downwards. This causes the material to build up in a disc around the object. The more mass contained by the object the deeper its potential well and the faster the material in the accretion disc will swirl around it. Thus, the more heating the disc will suffer and the more energy it will release in the form of electromagnetic radiation. Accretion discs are, primarily, found around protostars and black holes.