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Theory on the Origins of Dark Matter


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We know there to be Black Holes in the universe, most are located at the centre of galaxy's including our own. Black Holes consume matter of all densities up to the event horizen. People believe that the pressure inside a Black Hole would completely destroy all sustainabilty of an atom and hence would leave nothing left. But what if this wasn't so? What if a single solitary atom was to remain which pick up a risidue amount of a Black Holes enery? We know that Black Holes have huge gravity. A Black Hole requires what it 'eats' to maintain itself abit like us humans and any other living animal.

So my Theory is what if Dark Matter is just a by product of a Black Hole.

It eats and excreets. Like humans do.

This would amount for the amount of Dark Matter in and around galaxy's and nebulas.

This is just my theory.

Any input would be good.

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The energy or mass loss mechanism for a black hole is Hawking Radiation, whereby pair creation occurs at the event horizon.

However the particles formed are fermions so they interact via the EM force, which means they are affected by light and are thus detectable.

The point with dark matter is that we have no good theory for what it is made of. It cant be fermionic matter else it would interact via the em force.

I dont think that hawking radiation could accout for the 20% or so dark matter required to make up the universe as we know it today.

What do you think of dark energy, or einsteins cosmological constant stated another way.

Our theorys of dark matter are inadequate at best, our theories of dark energy dont exist. We are clueless.

Paul

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Mass is detected by its graviational effects: the rate at which something orbits a star indicates the mass of a star; the rate at which galaxy clusters rotate determines their mass. Adding up all the observable mass and comparing the result with what you'd expect (given the expansion rate of the universe) suggests there's a lot of missing mass. Some of this could be invisible stuff like dust but most is believed to be "dark matter".

A supermassive black hole at the centre of a galaxy can have its mass estimated because the rest of the galaxy is orbiting around it. There could be lots of small, isolated black holes throughout the universe that don't have surrounding matter and remain undetected - these could be part of the "missing mass". But unless there's an incredibly large number of them, it still wouldn't be enough to account for all of it, though I do recall reading a book a number of years ago by someone suggesting a great many small "primordial" black holes as missing mass. The problem then is to explain how all these black holes were made in such abundance at the time of the Big Bang. Normally they get made from collapsing giant stars, so they're big.

Your suggestion that a black hole is somehow more massive than we think, because of some extra energy from whatever it swallows, doesn't work, because energy can't come from nowhere. If a 1 million tonne black hole swallows one gram of matter then the black hole will now have a mass of 1 million tonnes plus 1g (if we ignore mass lost as radiation when the piece of matter fell in).

Andrew

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