All Questions
Tagged with black-holes singularities
462
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Understanding the Singularity of Black Holes [duplicate]
Could someone please explain how we know the singularity has an infinite density and zero size/volume? From reading around online black holes have a defined radius (the event horizon) but this isn't ...
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Where does the singularity go in an Einstein-Rosen Bridge?
I've been reading up on some material about black holes and Einstein-Rosen bridges. Generally it is said that a black hole is defined by the event horizon (boundary in space where the gravitational ...
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Is it possible for a black hole singularity to interact gravitationally with other celestial bodies (if we analyze it using the concept of gravitons)? [duplicate]
It is known to all that the travelling speed of gravitons (the propagation speed of gravitational field) is not instant. So for black holes, the gravitons (the gravitational field) generated by the ...
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Is there any evidence black holes can grow (gain mass) by accretion?
When LIGO detected GW150914, we saw for the first time the merger of 2 black holes and the gravitational wave evidence fit with our models and understanding for such an event. (Horizon meeting horizon)...
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Star collapses to a singularity or is collapsing into singularity?
This has bothered me for a while now, however I barely have a vocabulary to ask it. Please let me try.
When a star, at the end of its life starts to collapse into the black hole, all the atomic forces ...
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What is spinning in a spinning black hole? [duplicate]
When a rotating star collapses into a neutron star, the resulting object spins at a huge number of rpm due to its much smaller volume and the conservation of angular momentum. What happens when a ...
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Existence of a Trapped Surface to the Existence of a Black Hole
Does the existence of a trapped surface in a region of space (not necessarily either of the vacuum or symmetric spacetime) indicates (theoretically) the existence of a "black hole" there? ...
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Could subatomic particles exist in a black hole singularity?
Hypotheses of black hole singularities imply infinite density because a singularity is a dimensionless point with mass. However, subatomic particles constantly move. In this case, I see no possible ...
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How accurate are astronomical observations around black holes? Can they distinguish between the following two scenarios?
Scenario 1
As Schwarzschild imagined. All of the matter in the black hole is at the centre, forming a singularity. The formula for the event horizon that bears his name is
$$R = \frac{2GM}{c^2}$$
...
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What do we mean when we say that black holes aren't made of anything?
I have read this question:
It turns out that black holes aren't really objects, but rather regions in spacetime. In fact, this is so true that black holes are what we call vacuum solutions: there isn'...
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We say the big bang (initial singularity) didn't happen at a point, but is it the same with the singularity of a black hole?
I have read this question:
The simple answer is that no, the Big Bang did not happen at a point. Instead, it happened everywhere in the universe at the same time. Consequences of this include
The ...
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How Existence Of Matter Is Possible Inside The Black Hole? [closed]
According to Chronology of the universe, origin of the universe initiated as per below sequence:
Big bang (at 0 sec) occurs in the black hole (10^-35 m in size, Planck Length) at the center of the ...
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4
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What happens to the matter already at the very center of the star when it turns to a black hole?
I was wondering whether when an object collapses into a black hole, the matter in the position $r=0$, instantly becomes part of the singularity, or does it take time to fall into the singularity, and ...
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When falling freely into a black hole, how far does space extend out in front of you? [closed]
Falling freely into a black hole (assuming we survive or being point-sized) all particles in front of you are accelerating away from you in the direction of the singularity which seems flying towards ...
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How do infinitely dense singularities evaporate trough hawking radiation?
If we assumed that a black hole with a singularity of infinite density eventually evaporates due to Hawking Radiation, does this affect the singularity itself?
If mass is preserved in the singularity ...
