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How do stars more massive than four solar masses evolve into neutron stars?
J34wmore
I've seen that figure of 4 times the Sun's mass, but the usual number given is at least 8 times the Sun's mass. Anyway here's the answer:
The general idea is that, depending on how much mass is left once the star runs out of fuel, it may become a white dwarf, a neutron star, or a black hole.
A star like the Sun goes through a "red giant" star stage then becomes white dwarf star.
Stars that are much more massive than the Sun go through a "supergiant" stage. They finally run out of fuel. The core of the star is now mainly iron.
If, after running out of fuel, the amount of mass left in the core is more than a certain limit - the Chandrasekhar limit, currently believed to be about 1.39 times the mass of the Sun - the core's "electron degeneracy" pressure is not enough to resist the gravitational force on the core. In this case, the core of the star collapses into a neutron star or black hole and causes a supernova explosion.
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How large does a star need to be to end life as a neutron star?
From approximately 1.5 to 2.0 solar masses snow FAR
What is the mass of a neutron star?
Neutron stars range in mass from 1.35 Solar masses (2.69e+30 kg) to 2.40 Solar masses (4.16e+30 kg). Any smaller, and electrorepulsive forces will not allow the object to attain this stage (it would be a white dwarf instead), and any heavier, and the neutron star will collapse further into a black hole. This is called Schandraskar's limit a star must be at least 3 solar masses to be a candidate for a black hole however according to the Tolman, Oppenheimer, Volkov limits and star over 5 solar masses must become a black hole
What determines whether a star eventually becomes a black dwarf or a neutron star?
The stars solar mass, or relative size to the sun. If its gravity is big enough, when it does condense in on itself, it will create a black hole. If not, it will form a highly dense clump of matter, or a Neutron Star If the stars mass is more than 3 solar masses, it will form a black hole. If it is less, it will form a neutron star
What is the name for the largest black hole and what is its diameter?
We don't have a clue. The nearest black hole to the Earth is a long way away, and we believe that very massive - SUPER-massive - black holes may exist at the centers of many galaxies. How large they might be is entirely speculative. The sizes of black holes are generally estimated by mass, not by distance; "100,000 solar masses", for example. * Added - The name of the largest known black hole is OJ 287 with a mass estimated at 18 billion solar masses.
Is a pulsar a white dwarf?
A pulsar is a type of neutron star, a collapsed core of an extremely massive star that exploded in a supernova. Whereas white dwarfs have incredibly high densities by earthly standards, neutron stars are even denser, cramming roughly 1.3 solar masses into a city-sized sphere.
What determines whether a very massive star will become a neutron?
Whether a star will become a neutron star is determined by its mass. Generally, stars that are more than 8 solar masses (have a mass that is more than 8 times that of our Sun), but are less than 15 solar masses will become neutron stars when they die.
What is the difference between stars that become white dwarfs stars that become neutron stars and stars that become black holes?
The difference is in mass. Low to medium mass stars (up to about 8-10 solar masses) become white dwarfs. Massive stars (10 to 25 solar masses) become neutron stars. Stars above 25 solar masses tend to become black holes.
Why do you not expect to find a 5 solar mass neutron star?
There are no neutron stars with 5 solar masses because one if a neutron star exceeds 3 solar masses, the neutrons inside would no longer be able to support the extreme gravity, so the neutron star would then collapse into a black hole.A neutron star is prevented from further collapse by a force call neutron degeneracy pressure. Above 3 solar masses gravity will overcome this force and the stellar remnant will collapse completely to form a black hole.
Is a neutron star a young or a old star?
neutron star is a stellar remnant so it is neither a young star nor an old star . It is formed by the gravitational collapse of massive star and are composed of neutrons . neutron star has a mass in between 1.35 to 2 solar masses
Is a neutron star a young star or an old star?
neutron star is a stellar remnant so it is neither a young star nor an old star . It is formed by the gravitational collapse of massive star and are composed of neutrons . neutron star has a mass in between 1.35 to 2 solar masses
What forms from a supernova?
Depending on the mass of the original star it will either end up as a neutron star (< 20 solar masses) or a black hole (> 20 solar masses).
What are the two end results of the cores of massive stars?
That depends on HOW massive. From about 2 times the mass of the Sun to about 5 times the mass of the Sun, the dying star will explode and crush the core into a neutron star. More than about 5 solar masses, and the result will probably be a black hole. However, there's a LOT that we don't yet understand about stellar evolution and stellar dynamics.
What is the significance of 3 solar masses in a star's fate?
After a high-mass star explodes as supernova and leaves a core behind, the core would become a neutron star or a black hole. If the core is less than 3 solar masses, it would become a neutron star; if the mass exceeds 3 solar masses, the core would continue to collapse, forming a black hole.
A star the size of two stellar masses forms as a result of a supernova explosion what is the star called?
Following certain types of Supernova events there can often be a gravitational collapse of massive stars and this can result in the stellar remnant becoming a neutron star. Based on the Tolman-Oppenheimer-Volkoff limit the solar mass of a neutron star can range from 1.5 to 3.0 solar masses.
What 2 things can happen to a star after a supernova?
It can either become a neutron star or a black hole. If the star is between 8 and 15 solar masses, it will become an incredibly dense neutron star. If it is more than 15 solar masses, it will collapse and become an even denser black hole.
How large does a star need to be to end life as a neutron star?
From approximately 1.5 to 2.0 solar masses snow FAR
Why some massive stars become neutron stars and other black holes?
It depends on the mass of the star and how much of the star actually goes into the remnant.Stars between 10 and 25 times the mass of the sun form neutron stars. Stars over 40 solar masses form black holes. Stars between 25 and 40 solar masses can form either depending on how much of the star is blown away during the supernova and how much falls back into the collapsing core.
