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What is a Chandrasekhar mass and how does it relate to a supernova?
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Why will the sun never explode in a supernova?
Its not big enough. You have to have a certain amount of mass to end as a supernova.
What can you conclude about a Type I supernova?
It is right to conclude that a type I supernova is what it is because it managed to take out so much matter from its surrounding neighbor until it exceeded a 1.4M Chandrasekhar limit. Exceeding that limit meant that it had to tip over.
Will Sirius become a supernova?
Sirius A does not have enough mass to become a supernova. It will end it's life as a white dwarf.
Explosion of a supernova leave behind?
A neutron star, or a black hole. Which it is, depends on the mass that remains after the supernova explosion. Above a certain mass limit, a black hole will form.
What is a cannibal star?
A cannibal star is a star that is close enough to another stellar object, where it can "feed" off it's companion. This maybe a white dwarf and it's stellar rich star or a hydrogen filled planet, that has strayed too close and its matter is "sucked" into the star. Because of the Chandrasekhar Limit, a Feeding Star in a binary system can consume as much mass from its companion as 1.44m (m is the mass of our sun) before it turns into a type 1a supernova. These supernova are very easy to discern among other novae because they are all the same brightness and have the same chemical composition and thus can be used as a standard candle to judge the distances to other galaxies. However in an observed type 1a supernova in 2006, the mass of the white dwarf exceeded 2m before it went supernova because of centrifugal force (how fast it spins). This observation challenges the idea of using type 1a supernova as standard candles.
Why will the sun never explode in a supernova?
Its not big enough. You have to have a certain amount of mass to end as a supernova.
When a white dwarf exceeds the Chandrasekhar limit what happens?
It will explode as a type Ia supernova.
What is Chandrasekhar's Limit?
The Chandrasekhar Limit, also called the Chandrasekhar mass, is the point beyond which the "electron degeneracy pressure" within a white dwarf star no longer balances the star's own gravity. It places an upper limit on the possible mass of a white dwarf. If a white dwarf's gravity pulls material away from a neighboring star, adding it to the white dwarf and increasing its mass, the Chandrasekhar mass (roughly 1.4 times the mass of our Sun) can eventually be reached and surpassed. When the balance between electron degeneracy pressure and gravity ends, the force of gravity rapidly collapses the white dwarf, and the resulting pressure and density result in a violent outward explosion that destroys the white dwarf. In Astronomy, this is known as a type Ia supernova. There have been a small number of type Ia supernovae (supernova "2007if" was the second known) which were believed to occur at masses significantly above the Chandrasekhar limit. The prevailing theory is that in these cases, two white dwarves collided, resulting in the limit being abruptly exceeded.
What happens if the mass of a white dwarf reaches the 1.4 solar mass limit?
The white dwarf (which is made mostly of carbon) suddenly detonates carbon fusion and this creates a white dwarf supernova explosion.
What neutron star is smaller than white dwarfs are thought to be remnants of .?
A neutron star is the remnant of a star, which - at the end of its life, and AFTER possibly losing a lot of mass (for instance, in a supernova explosion) has a remaining mass that is greater than the so-called Chandrasekhar limit.
What can you conclude about a Type I supernova?
It is right to conclude that a type I supernova is what it is because it managed to take out so much matter from its surrounding neighbor until it exceeded a 1.4M Chandrasekhar limit. Exceeding that limit meant that it had to tip over.
What mass is required for a Type ll supernova?
Stars with a mass about 9 solar masses, or greater, will explode as a type II supernova.
Why do some stars create a black hole and others do not?
Only the largest stars, that end as supernovae and leave a core 3 or more times as massive as the Sun in the solar system in which we exist can form black holes. Post-supernova cores that do not reach this mass of 3 solar masses are simply not massive enough to be crunched to the singularity of a black hole. More scientifically, the mass that must be exceeded to collapse into a black hole is called the Chandrasekhar limit, after the physicist, a certain Mr. Chandrasekhar.
When does a type 2 supernova begin to explode?
A massive red supergiant star will eventually explode as Type II supernova. That happens when the high mass star has run out of its nuclear "fuel". A series of nuclear fusion reactions finally ends at the nucleus of iron. A massive core of iron remains and iron can't be used to produce energy by nuclear fusion. The core collapses under gravity and the energy released throws the outer layers of the star into space in a supernova explosion. This is a Type II supernova. Sometimes it's referred to as a "core collapse" supernova, for obvious reasons. A bit more detail, if needed: A "high mass star" in this context is one with a mass of at least 8 times the mass the Sun. They develop into red supergiant stars. The mass of the iron core needs to be over the "Chandrasekhar mass" of about 1.4 times the Sun's mass. A core of that mass is unable to resist gravitational collapse. Depending on the mass of the iron core, collapse may stop at a "neutron star". Otherwise there is a complete collapse to a "black hole". See "Sources and related links", below.
Which scientist proved that the stars with mass less than 1.44 times the mass of the sun end up as white dwarfs?
S. Chandrasekhar
When will the sun be supernova?
Never. A star must be about 10 times the mass of the sun or more to go supernova.
When does a nova event occurs if a white dwarf accepts material from a nearby?
When the mass exceeds the Chandrasekhar limit.
