An Indian researcher proposed a way to find wormholes - or, in other words, wormholes. It is based on the specific shadow left by these hypothetical objects.
Each of the astronomers at least once in his life thought about space-time travel. Not least this is due to completely scientific hypotheses that allow the existence of wormholes. They represent hypothetical topological features of space-time, or, in simple terms, tunnels. There is an assumption that with the help of such an object you can instantly get from one point in space to another, without physically overcoming the distance between them.
A wormhole can be described by the more familiar word "teleport" in the framework of science fiction, although this analogy for a number of reasons will not be entirely correct. Within the framework of General Relativity, the existence of wormholes is allowed. In this case, the traversable wormhole should be filled with exotic matter with a negative energy density, which would create a strong gravitational repulsion and prevent the burrow from collapsing.
As we already noted, wormholes, unlike black holes, are purely hypothetical. Nevertheless, scientists do not give up trying to find them. Now the physicist Rajibul Shaikh of the Indian Institute for Basic Research Tata said that some wormholes can be detected by their shadow. It represents the dark area surrounding the entrance to the wormhole and can in theory be observed.
The scientist named the shape of the shadow, calculating the trajectories along which the rays of light travel, taking into account the topology of the wormhole throat. In his opinion, when a third-party light source is found only at one end of the wormhole, some of the light will scatter, and some will go into the tunnel. An observer who is on a planet located relatively close to the entrance to the wormhole will see a peculiar arrangement of light and dark spots.
The shadow of wormholes with a specific metric, rotating at different speeds. The dotted line shows the shadow of a rotating Kerr black hole.
If there is a low speed of rotation of the wormhole, its shadow will be similar to the shadow of a rotating Kerr black hole - being almost perfectly round. As the rotation speed increases, the shadow of the wormhole will become more asymmetrical. More information about the research results can be found in the arXiv repository.
Ilya Vedmedenko
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