Wednesday, September 14, 2011

What is difference between a Black hole, neutron star and a supernova?

I know that they occurs when a star dies but what makes a star to turn into a black hole NOT a supernova or neutron star? If you can, please give me a link where i can see their images and also can know more about them.|||Black Hole: An object with a gravitational field so strong, not even light can escape. Has a mass ranging anywhere from 1.5 solar masses (stellar-mass) to billions of solar masses (supermassive black holes). Now, the density varies just as much. An earth sized black hole would have a density around 2 x 10^30 kg/m^3, while a supermassive black hole (believed to be at the center of most galaxies) would have a density similar to that of water.





Neutron Star: Collapsed remnant of a supernova. Has a mass ranging from about 1.35 solar masses to 2.1 solar masses. They typically have densities varying from 8 x 10^13 g/cm^3 - 2 x 10^15 g/cm^3, or about the density of an atomic nucleus.





Supernova: Is more or less an exploding star.








No one's really sure how a star might form into a neutron star and not a black hole. A black hole is more dense, so it is assumed that a more massive explosion, with a higher gravitational field, would have a better chance of forming into a black hole.|||The above answer is good, but a neutron star can form from a white dwarf under certain conditions, the subatomis particles can for neutrons that pack very close together and cause extremely high surface temeratures that emit X rays.|||It has to do with the mass of the star.





A star is in constant equilibrium where the gravity trying to pull everything into the center is counteracted by the outward pressure of the energy of fusion.





When a stars hydrogen runs out and it can no longer maintain fusion, it starts collapsing under it's own weight. Our star has enough weight that it will prob not nova, but simply collapse into a white dwarf. A larger star will have a massive reaction when it finally collapses, go nova and make a neutron star with what's left over, or a black hole if it is even larger than that.

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