- #1
Andrea Panza
- 23
- 6
I have a question regarding Kugelblitz black holes.
I know that they are purely theoretical, and I am perfectly fine with the matter-energy equivalence so I have no problem in assuming that concentrating a sufficient amount of energy in a certain radius might generate an event horizon. However photons do not have mass and travel at the speed of light so I have an issue with the formation of Kugelblizes potentially traveling at the speed of light.
Imagine an observer stationary with a photon source that emits a photon with energy e/2 where 'e' is the energy required to create a kugelblitz
A second source of photons with intensity e/2 is positioned in a way that an object of significant mass bends the trajectory of the photon enough that the trajectory becomes parallel to the trajectory of the first photon (the first trajectory is the geometric tangent to the second trajectory).
If we emit the photons in the way that they meet at the tangent point when their trajectories are parallel they should form a Kugelblitz that moves away from the initial observer at the speed of light, which obviously does not make sense.
I hope you can clarify the issue
I know that they are purely theoretical, and I am perfectly fine with the matter-energy equivalence so I have no problem in assuming that concentrating a sufficient amount of energy in a certain radius might generate an event horizon. However photons do not have mass and travel at the speed of light so I have an issue with the formation of Kugelblizes potentially traveling at the speed of light.
Imagine an observer stationary with a photon source that emits a photon with energy e/2 where 'e' is the energy required to create a kugelblitz
A second source of photons with intensity e/2 is positioned in a way that an object of significant mass bends the trajectory of the photon enough that the trajectory becomes parallel to the trajectory of the first photon (the first trajectory is the geometric tangent to the second trajectory).
If we emit the photons in the way that they meet at the tangent point when their trajectories are parallel they should form a Kugelblitz that moves away from the initial observer at the speed of light, which obviously does not make sense.
I hope you can clarify the issue