- #1
Suekdccia
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- TL;DR Summary
- Question on halos of matter made from massive and stable particles?
Consider a halo made up from massive and stable particles like neutrinos* (let's not consider protons which, although we don't have any experimental evidence showing that they are unstable and decaying, there are some GUTs proposing theoretical mechanisms where they could decay over extremely long timescales). Those neutrinos in the halo would collapse over time (for example due to the emission of gravitational waves as they orbit the central point of mass) and if the amount of neutrinos is enough this would form a black hole
But could there be some possibility in which, once it collapses, it does not end in a black hole?
For instance, what about if we had halo of neutrinos around a galaxy that when collapsing would not be enough to turn into a black hole (but near that limit)? And in that case, would the halo have a higher angular momentum than most of the galaxy components not due to its mass content but rather due to the distance from the galactic center?
And even if this could happen, are there any other ways in which a high amount of collapsing neutrinos would not end up in a black hole? Or is it unavoidable for larger masses?
*let's assume that neutrinos had a much smaller velocity than they generally do so they would easily get gravitationally bounded
But could there be some possibility in which, once it collapses, it does not end in a black hole?
For instance, what about if we had halo of neutrinos around a galaxy that when collapsing would not be enough to turn into a black hole (but near that limit)? And in that case, would the halo have a higher angular momentum than most of the galaxy components not due to its mass content but rather due to the distance from the galactic center?
And even if this could happen, are there any other ways in which a high amount of collapsing neutrinos would not end up in a black hole? Or is it unavoidable for larger masses?
*let's assume that neutrinos had a much smaller velocity than they generally do so they would easily get gravitationally bounded