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String Theorists Say Black Holes Are Multidimensional String 'Supermazes'

scientificamerican.com

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Re: String Theorists Say Black Holes Are Multidimensional String 'Supermazes'

#4
> Black holes, the densest objects in the universe

My mind was blown when I found out that mean density of black holes inside the event horizon can be quite low.

> a super supermassive black hole with the mass of 4.3 billion Suns would have a density equal to one i.e. the same density as water.

https://physics.stackexchange.com/a/218816

Re: String Theorists Say Black Holes Are Multidimensional String 'Supermazes'

#5
> One question that’s still unresolved is whether the supermaze versions of fuzzballs fully satisfy all the requirements scientists have for black holes

The only question about supermaze fuzzballs blackholes, still unresolved, is what do string theorist smoke these days.

Re: String Theorists Say Black Holes Are Multidimensional String 'Supermazes'

#6

> Black holes, the densest objects in the universe My mind was blown when I found out that mean density of black holes inside the event horizon can be quite low. > a super supermassive black hole with the mass of 4.3 billion Suns would have a density equal to one i.e. the same density as water. https://physics.stackexchange.com/a/218816

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Re: String Theorists Say Black Holes Are Multidimensional String 'Supermazes'

#9

> Black holes, the densest objects in the universe My mind was blown when I found out that mean density of black holes inside the event horizon can be quite low. > a super supermassive black hole with the mass of 4.3 billion Suns would have a density equal to one i.e. the same density as water. https://physics.stackexchange.com/a/218816

This is purely based on the definition of "density" here, which is the mass of the black hole divided by the volume inside the event horizon (which is the invisible/black sphere).

However the event horizon does not represent the extent of the mass of the black hole, but rather the point where gravity becomes so strong that nothing can escape it, even light (hence "black" hole/sphere).

We don't really know what's inside the event horizon or how the mass if actually distributed. The concept of singularity is that all the mass is located in a zero volume with infinite density.

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