While out exploring I have found this rather interesting system that has me fascinated. HD 59167 has a Class A main star orbited by 2 black holes and 2 neutron stars all very close to each other except for the last neutron star. The black holes are in orbit of each other with a ~10 LS separation, both are less than 100 LS from the main star, and the first neutron star is less than 200 LS from the main star. I had the exact numbers but when a 2 year old needs paper for their picture... Anyways I am not experienced in astrology but this just looks like something that would be fantastic to watch and study; to me it looks like the beginning of a very large or even massive black hole that is only 1800 LY from earth as well but I would like to hear from any experts out of curiosity.
Massive black hole in the making?
- Thread starter Fox White
- Start date
More like astronomy.
If the two neutron stars collided fusion would start again and if the class a was involved it would continue for longer. If they have enough combined mass to fuse atoms into iron when it goes nova you don't get a black hole. The reason being is that iron collapsing inwards has enough weight behind it to create anti-matter blowing the star the pieces.
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Black holes aren't understood very well and they aren't holes either. Its a very dense star. If you go off quantum mechanics the star is approximately 1 planck unit length in scale (think how small an atom is to you, a planck unit is that again to the atom). If you go off relativity then at the event horizon not only can light not escape but time doesn't flow either. So how would a star merge into black hole in a collision?
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I personally think the black hole has a limit to how large it can grow before it explodes is some incomprehensible sized explosion. We are mistaking the last time that happened as the big bang.
Well, I'm quite proficient in astrology so I might help out a bit here.
This constellation means that you might experience some finacial backlash in May or June, but your relationship will have a very good phase in the second half of the year. There are also some risks for your health, so it would be better if you lose some weight.
SCNR
This constellation means that you might experience some finacial backlash in May or June, but your relationship will have a very good phase in the second half of the year. There are also some risks for your health, so it would be better if you lose some weight.
SCNR
Hardly. Mass of the two neutron stars combined would almost certainly cause it to collapse into the black hole.
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No need for snarky comments, being a full time dad to a 2 year old makes you loose a bit of your mind and spelling mistakes happen. Anyways that is interesting and I know a little of event horizons but how would 2 interact with each other? It would be nice if we did actually know more but for now this is an interesting system to look at.
I disagree because we don't jump from two neutron stars to an extremely dense star in an instant. When one hits the other there will be a massive release of energy from the collision. That might blow them both to bits in a supernova if they're dense enough. If not the fragments of that star will be very hot causing fusion to start again. It will then settle down into a new star.
I very much doubt that fusion could start again in that scenario. After all the stars collapsed into a neutron star after they had used up all their fuel to support fusion. So I think it would end as another black hole, because the combined mass should be enough to overcome the strong nuclear force which is the last thing that prevents a dying star of a certain mass from ending in eternal collapse.
While its possible for two neutron stars of a certain mass to produce a black hole it is more likely fusion would either restart or the impact would blow both to bits in a type 1A supernova.
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Fusion is driven by the mass of a star. The more mass, the more pressure at its core, the easier it is to fuse heavier elements. When it lacks the pressure to fuse a heavier element it cools and collapses in on itself. The collapse either produces a dense star or regular supernova (including a black hole afterwards) depending on the stars mass. That is of course unless the star has produced iron in which case the collapse has so much force behind it the iron atoms produce anti-matter blowing the whole thing to bits in an explosion so powerful not even a black hole remains.
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That's my understanding anyway.
The problem with that is that there aren't any elements within a neutron star. The pressure has caused the protons & electrons to combine into neutrons - hence the name! To restart fusion you would first need to somehow cause the neutrons to convert back into protons & electrons that could then re-form elements. I don't think that could happen unless there was sufficient an explosion to effectively overcome the gravitational forces and flung the neutrons beyond the ability to re-collapse into a star.
Here's a brief article on what could be expected if two neutron stars did collide http://www.iflscience.com/space/what-happens-when-neutron-stars-collide
Just a couple of helpful points: antimatter is not produced via stellar fusion, even at the high mass end when the star has produced iron in its core. The precise mechanism causing the detonation of "core-collapse" supernovae is not completely understood, but the general idea is that the predominantly iron core of a large star collapses into what is effectively a neutron star, and then the outer ~95% of the original star graviationally falls onto this neutron core and shock rebounds into an explosion. No antimatter required!
On the two neutron stars colliding, it would be impossible for fusion to restart, as the material in each of the stars would be almost completely composed of neutrons - there are no regular elements around to fuse! So the two stars would either merge into a larger neutron star, or, more likely, collapse into a black hole. Similarly, they would also not create a Type Ia supernova, since there is no detenation mechanism. I believe you're thinking here of the double-degenerate model for Type Ia's, but that uses the collision of two *white dwarfs* rather than two neutron stars to trigger an explosion.
This is pretty much correct. A neutron star is essentially the midpoint between a white dwarf and a black hole. If a star is fairly massive but not massive enough to collapse all the way into a black hole, it collapses into a neutron star instead. The gravity in a neutron star is high enough that it crushes the electron orbits all the way down into the nucleii of the atoms, where the electrons fuse with the protons and form more neutrons. Essentially, the core of a neutron star is formed by a solid atomic mass of degenerate neutrons (i.e. no orbital shells seperating atoms, like there is in normal matter - this is called neutronium in sci-fi and neutron degenerate matter in scientific parlance). There is literally nothing that it can fuse into. To restart fusion you would have to completely break up the neutron star to the point where the gravity dropped low enough for atomic matter to reform, which, even given a collision with another neutron star, would not likely happen (the gravitational gradient is simply too strong). Two neutron stars colliding would either simply turn into a larger neutron star, or if the mass crossed the Tolman-Oppenheimer-Volkoff limit, a black hole.
I LOL'd hard at this. You get rep sir.
Deleted member 38366
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I like the understatement in that term "gravitational stress". This close to the event horizon the "stress", also known as gravitational tidal forces, would tore your ship apart into single atoms, lining them up in a long line around the black hole, while a significant part of your former self would be emitted into the voids of space as hard radiation.
Someone correct me if I'm wrong, but isn't it true that the fusion of iron is using more energy than it produces? This process actually cools down the core, and can last only for a brief period of time. It's pretty much the dead end.
Also, I've never heard that iron fusion produces anti-matter (?).
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Both of these statements are correct. You mostly get elements heavier than iron through r-process neutron capture, rather than fusion.