# Tag Info

1

Not sure about overall EM radiation from colliding singularities, but one part is almost possible to answer: the Hawking Radiation (HR). As singularities approached, the amount of radiation emitted would reduce slightly in certain directions. HR emitted by Black Hole and 2 (S1 and S2) should be absorbed by the other. Assuming S1 and S2 then have a ...

2

First, the video which the question links to augments real data with artistic interpretation. I am sure that the OP and other posters know that, but I just wanted to make sure there was no misunderstanding. I was part of the research group that created the data shown in the video. We worked with a scientific visualization specialist/artist to create the ...

-4

Can virtual particles be 'boosted' into becoming real particles No. That's a fairy tale for kids. See anna's answer to this question about virtual particles. Virtual particles exist only in the mathematics of the model. They are abstract things, not something that can be boosted into reality. by fields other than gravity? We have no actual ...

0

Why is it that black holes emit Hawking radiation? We don't actually know that they do. Hawking radiation remains a hypothesis. It's been around for so long that people rather take it for granted, but there's no actual evidence for Hawking radiation. And when you read the "given" explanation, it doesn't seem to make sense. See Wikipedia: "This ...

3

This answer is at the level of first year college physics. Two concepts have to be cleared up here: "virtual particle" and "particle antiparticle virtual loops" . Here is a first order Feynman diagram of electron positron annihilation. We read it as follows: an electron emits a real photon at the round vertex and becomes a virtual electron, and meets ...

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As far as I understand it, something about the intensely strong gravitational field around a black hole gives the virtual particles enough energy to be 'boosted' into real particles, hence we can then observe Hawking Radiation. Hawking radiation is a semiclassical prediction. As such the effects of gravity are given through the curvature of spacetime, ...

7

Perhaps the most direct example in particle physics is $J/\Psi$ (or any other meson not including up and down quarks) production. The meson has a valence content of $c\bar{c}$, so it represent a pair of particles knocked on-shell from the nucleon sea. The reaction is not exactly analogous because it requires a rather large input of kinetic energy (as does ...

2

The reason black holes emit radiation is because virtual particles are popping into existence and popping out of existence throughout space including at the event horizon of a black hole. When they pop into existence they pop into existence in pairs that then annihilate within a fraction of a fraction of a second. When a pair of virtual particles pop into ...

6

Black holes are basically neutron stars with such a gravitational force that even light cannot escape from it. A black hole is a mathematical solution. A neutron star over the critical mass gets so dense that it forms larger and larger time dilation relative to the outside universe thus we get to see what happens on short time scales. But what ...

0

The answer to the question is simply the Carnot efficiency: $$Efficiency = 1-{T_U \over T_B}$$ Where $T_U$ means the temperature of the universe and $T_B$ means the temperature of the black hole, and Efficiency means the maximum efficiency that is possible. It does not matter if you place the heat engine close to the black hole or far away from it, the ...

8

Any black body in space radiates and ends up very cold, might even crystallize. The law of increasing entropy holds for closed systems, in this case the whole system: "all the radiation that left the black body + the black body itself" microstates. In the sense that a black hole behaves as a black body the same holds true, it cannot be considered a ...

1

Nothing can escape a black hole Once it has crossed the event horizon. Quoting from the wikipedia article Physical insight into the process may be gained by imagining that particle-antiparticle radiation is emitted from just beyond the event horizon. This radiation does not come directly from the black hole itself, but rather is a result of virtual ...

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The paper pointed out by Daniel's comment gave me a starting point to find more literature on this topic and do further research. After a while, it became clear to me that my question is actually an unsettled (research) question. Therefore, a definitive answer cannot really be expected. Nonetheless, I think it's valuable to provide something of an answer. ...

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