All Questions
10
questions
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Cosmic censorship conjecture: Why naked singularities are expected not to exist?
According to wikipedia, the weak form of the Cosmic Censorship Hypothesis says the following:
Singularities [...] are typically hidden within event horizons, and therefore cannot be observed from the ...
- 46
0
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1
answer
138
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Schwarzschild Naked Singularity Creation
In the Schwarzschild metrics (Plank units):
$$ds^2=-\left(1-\frac{2m}{r}\right)dt^2+\left(1-\frac{2m}{r}\right)^{-1}dr^2+r^2\left(d\theta^2+\sin^{2}\theta d\phi^{2}\right),$$ we can have a Black Hole (...
- 770
1
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1
answer
141
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Why do physicists dislike Naked singularities? [duplicate]
Why do physicists dislike naked singularities?
Why do physicists consider the potential existence of Naked singularities as a serious problem?
- 2,908
7
votes
2
answers
767
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Naked singularity
Many consider naked singularities as a fundamental problem and that it should be always covered by a horizon (Cosmic censorship hypothesis). But why naked singularities are really a problem?
If we ...
- 71
0
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0
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75
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Are singularities' behaviour really unpredictable?
If a real/true singularity existed our models and theories would become useless to predict what would happen in that singularity.
For example if naked singularities really existed, we could not ...
user198758
2
votes
1
answer
327
views
Would a 5-dimensional black hole actually break laws of physics?
I discovered a paper by, Figueras, Kunesch, and Tunyasuvunakool, "End Point of Black Ring Instabilities and the Weak Cosmic Censorship Conjecture." A Cambridge University press release is here.
The ...
user198758
1
vote
1
answer
109
views
Electron falling into an extreme black hole and Cosmic Censorship Hypothesis [duplicate]
It is argued that a black hole with Q>M cannot be formed as the formation of such a black hole leaves a naked singularity which is against the Cosmic Censorship Hypothesis.
But, consider an extreme ...
- 3,905
3
votes
1
answer
609
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Naked singularity of a charged black hole
Consider the Reissner-Nordstrom metric for a black hole:
$$ds^{2} = - f(r)dt^{2} + \frac{dr^{2}}{f(r)} + r^{2}d\Omega_{2}^{2},$$
where
$$f(r) = 1-\frac{2M}{r}+\frac{Q^{2}}{r^{2}}.$$
We can write
$...
- 3,203
1
vote
1
answer
179
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How can a five-dimensional black hole 'break' general relativity? [closed]
By the laws of general relativity and the existence of black holes, what makes our universe to be just 4 dimensional but not 5 or more because a 5-d black hole can violate theory of relativity?
...
- 1,275
28
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1
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Overcharging a black hole
Hubeny's 1998 paper got a lot of people interested in determining whether cosmic censorship can be violated by dropping too much charge onto a black hole. It suggested that you might be able to get a ...
user4552