Tuesday, February 3, 2009
naked singularities
In this month's issue of Scientific American, there is an article postulating the possibility of having a singularity without having a event horizon. This has many, many implications to our knowledge of black holes, which are singularities that are shrouded by an event horizon, or boundary or point of no return for things being pulled into a black hole. The mechanism for creating these naked singularities arises from solutions to Einstein's General Relativity equations, that take density variations in account during star collapse. These solutions still do not take pressure against gravity, the force that keeps a star from collapsing. There are also other mechanisms that could cause a singularity to loose it's event horizon, by either adding spin or an electric charge to the singularity, but these solutions prove even MORE complicated than the already insanely complicated solutions. This also means that humans may finally be able to directly detect singularities, where as as of now the only means we have of detecting black holes is by watching the material and celestial bodies that are gravitationally bound to said black holes. We may also be able to create a singularity that we could see and detect, depending on how much mass and/or energy is required to make a singularity. Seems pretty cool to me, and it could shed light on a otherwise dark topic.
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That pun at the end was fucking rad!
ReplyDeleteWhat about Hawking radiation? Would that cause entropy of the "stuff" filling the black hole, eventually causing the event horizon to disintegrate and leave only the singularity?
I don't think it works that way, cause the event horizon is a boundary and not a manifestation of any kind that can be eroded away. This boundary is caused by the gravitational effects, and the singularities without boundaries are theoretically caused by other forces and attributes of the singularity
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