- #1
utkarsh009
- 47
- 0
can anyone tell me about various stages of life of a star? when does a neutron star, supernova, pulsar form?
When do neutron stars, supernovas, and pulsars form during a star's life?
In summary, neutron stars, supernovas, and pulsars form at different stages during a star's life. Neutron stars are formed when a star goes through a supernova explosion, where the core collapses and becomes extremely dense. This happens towards the end of a star's life, after it has burned through all of its fuel. Supernovas also give birth to pulsars, which are rapidly spinning neutron stars that emit beams of radiation. These beams can be detected on Earth, making pulsars useful tools for studying the universe. Overall, neutron stars, supernovas, and pulsars are all fascinating and important phenomena that occur during a star's life.
- #2
The riddler
- 88
- 0
Different sized stars come to different ends, all the stages you have mentioned (neutron star, supernova, pulsar form) happen at the end of a stars life. Neutron stars and Pulsars usually happen in stars between 1.35-2.1 solar masses (mass of the sun) and supernova's 1.4+ solar masses.
Heres a good website about the life cycle of a star: http://aspire.cosmic-ray.org/labs/star_life/starlife_main.html
Hope this helps :)
_____________________________________________________________________________
http://www.youtube.com/watch?v=DvQwXOCKNLY"
Heres a good website about the life cycle of a star: http://aspire.cosmic-ray.org/labs/star_life/starlife_main.html
Hope this helps :)
_____________________________________________________________________________
http://www.youtube.com/watch?v=DvQwXOCKNLY"
Last edited by a moderator:
- #3
qraal
- 790
- 3
utkarsh009 said:
In stars above 8 solar masses a star can cause it's core material to undergo nuclear fusion all the way to iron & nickel. Once they form in sufficient amounts the core becomes unstable because they require more energy to make than they produce by fusion. The core collapses into a super-dense state - neutronium - and an immense amount of gravitational energy is released in a massive burst of neutrinos and a tiny fraction of their energy causes the outer layers of the star to explode into space. That's the supernova, while the neutronium core is a neutron star. A pulsar is a neutron star which is losing it's rotational energy as beams of electromagnetic energy. Some pulsars can be sped up by accreting mass from a nearby star and become what's known as millisecond pulsars.
Lower mass stars don't form supernova. Instead they form red giant stars which blow away most of their mass into space, leaving behind a white dwarf star.
- #4
utkarsh009
- 47
- 0
the riddler mentioned the best ever sites with all information and also interactive quizzes. thank you! but there is no information about pulsar. and for pulsar qraal just did what i had expected. thanks to you too! wow now i won't be confused in this part, at least. and again the quizzes on the sites were very good. 
- #5
qraal
- 790
- 3
utkarsh009 said:the riddler mentioned the best ever sites with all information and also interactive quizzes. thank you! but there is no information about pulsar. and for pulsar qraal just did what i had expected. thanks to you too! wow now i won't be confused in this part, at least. and again the quizzes on the sites were very good.
You're welcome :-)
Any more questions, just ask away. Most of us are pretty friendly around here.
1. What is the life cycle of a star?
The life cycle of a star begins with the collapse of a cloud of gas and dust, known as a nebula, under its own gravity. This forms a protostar, which eventually becomes a main sequence star, where it will spend most of its life. Depending on its mass, a star will eventually run out of fuel and either become a white dwarf, neutron star, or black hole.
2. How do stars produce light?
Stars produce light and heat through the process of nuclear fusion. In the core of a star, hydrogen atoms fuse together to form helium, releasing vast amounts of energy in the form of light and heat. This process continues until the star runs out of hydrogen fuel.
3. What factors determine the lifespan of a star?
The lifespan of a star is primarily determined by its mass. The more massive a star is, the shorter its lifespan will be. Other factors that can impact a star's lifespan include its composition, rotation rate, and whether it is part of a binary system.
4. How do stars die?
Stars can die in a variety of ways, depending on their mass. Low to medium mass stars, like our sun, will eventually run out of hydrogen fuel and become a red giant, shedding its outer layers and leaving behind a white dwarf. High mass stars, on the other hand, will end their lives in a spectacular supernova explosion, leaving behind either a neutron star or black hole.
5. Can stars come back to life?
Technically, no. Once a star has exhausted all of its fuel, it cannot reignite and continue its fusion process. However, some stars, such as white dwarfs, can undergo a type of nuclear fusion called carbon fusion, which temporarily provides them with a new source of energy. This is not considered a true "resurrection," but rather a brief extension of the star's lifespan.
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