Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: Europan Ocean on 05/08/2019 08:29:24
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What is the nature of dark matter around a black hole? Does it fall in? Is there dark matter in black holes? Is it repelled?
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What is the nature of dark matter around a black hole? Does it fall in? Is there dark matter in black holes? Is it repelled?
If it (a specific bit of it) is aimed quite perfectly, it will fall in. More likely it picks up speed as it falls and exits the system similar to the way a comet leaves. Maybe it orbits, or maybe it moves too fast to orbit.
It cannot be slowed or repelled since there is no way in interact with dark matter. That's what makes it dark.
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It is thought that dark matter would be more concentrated in the center of the galaxy, nearer the supermassive black hole.
But because Dark Matter does not clump (like ordinary matter), it will not form an accretion disk, and will not radiate its energy via electromagnetism. This means that far more normal matter will fall into the black hole, even though Dark Matter is more common (by a factor of about 5).
Nobody is entirely sure what happens inside the event horizon of a black hole, but it seems likely that any Dark Matter that was aimed directly at the event horizon would find itself on a 1-way trip towards the central singularity. It will add to the overall mass/energy of the black hole.