Geon (astrophysics)
A geon (in a special case also called ball lightning ) is in theoretical physics a concentration of light that is so intense that the energy it contains, according to the general theory of relativity, noticeably influences the surrounding space-time . In the special case, also called ball lightning, the energy is so high that it creates a black hole with an event horizon that is larger than the energy concentration. As a result, the radiation energy would not escape from the black hole, which, in contrast to ordinary black holes, would not consist of mass energy but of radiation energy.
To put it more simply, a geon is an object that works through its gravitation and is created by energy and not by mass. According to Albert Einstein's general theory of relativity, once the event horizon has formed, the type of mass energy that created it no longer has any influence. The energy that would have to be expended to create a ball lightning would result in a temperature that exceeded the theoretical limit of the Planck temperature, the temperature that the universe had 5.4 · 10 −44 seconds after the Big Bang , exceed.
Probably the best-known conception of the idea of the Geon can be found in John Archibald Wheeler's work Geons from 1955, which experiments with the idea of creating particles (or sculptures of particles) with the help of space-time curvature . Another idea discussed in Wheeler's study is that field lines of electrical charges trapped in a wormhole throat are a way of modeling the properties of a charged pair of particles.
Trivia
Ball lightning or geons play an important role in the plot of the third book in the book series by the American science fiction author Frederik Pohl, known in German as the Gateway Trilogy .
Individual evidence
- ↑ JA Wheeler: Geons . In: Physical Review . 97, 1955, pp. 511-536. bibcode : 1955PhRv ... 97..511W . doi : 10.1103 / PhysRev.97.511 .