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starfish99
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I know that nuclear fusion is the source of energy for our sun and most of the other stars. Neutron stars and white dwarfs have very high surface temperatures. What is the source of their energy?
starfish99 said:I know that nuclear fusion is the source of energy for our sun and most of the other stars. Neutron stars and white dwarfs have very high surface temperatures. What is the source of their energy?
starfish99 said:So Chronos, will the black dwarf cinder be made of extremely dense oxygen, nitrogen, carbon, etc that doesn't exist naturally on our planet and can't be created in our labs?
starfish99 said:I know that nuclear fusion is the source of energy for our sun and most of the other stars. Neutron stars and white dwarfs have very high surface temperatures. What is the source of their energy?
A black dwarf is what a white dwarf becomes eventually because it cools.ladykrimson said:Do we know of any black dwarf objects in existence?
ladykrimson said:Do we know of any black dwarf objects in existence?
The primary source of energy for both white dwarfs and neutron stars is nuclear fusion. This process converts hydrogen and helium into heavier elements, releasing a large amount of energy in the form of heat and light. However, the exact mechanism for energy production differs between these two types of stars.
In white dwarfs, nuclear fusion occurs through a process called carbon fusion. As the star's core becomes increasingly dense, the temperature rises and carbon atoms begin to fuse, releasing energy. In neutron stars, the extreme density and pressure causes a process called neutron capture to occur, where individual protons and neutrons merge to form heavier elements, releasing energy in the process.
Yes, both white dwarfs and neutron stars have a finite source of energy. Once all of the hydrogen and helium in the star's core has been converted into heavier elements, nuclear fusion can no longer occur and the star begins to cool. However, this process can take billions of years to complete, so these stars have a very long lifespan.
Yes, in addition to nuclear fusion, white dwarfs and neutron stars can also generate energy through gravitational contraction. As these stars cool, they begin to shrink in size, which causes the release of gravitational potential energy. This process can help to prolong the lifespan of these stars.
The energy production in white dwarfs and neutron stars is much more intense than that of the Sun. Due to their smaller size and higher density, these stars are able to generate much more energy per unit mass. In fact, neutron stars can release up to 10 billion times more energy than the Sun in a single second.