Ripples in Space-Time Could Reveal the Shape of Wormholes

Live Science | 11/7/2018 | Staff
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Wormholes — yawning gateways that could theoretically connect distant points in space-time — are usually illustrated as gaping gravity wells linked by a narrow tunnel.

But their precise shape has been unknown.

Theory - Wormholes - Portals - Space-time - Something

In theory, traversable wormholes, or four-dimensional portals through space-time, might work something like this: At one end, the irresistible pull of a black hole would suck matter into a tunnel connected at the other end to a "white hole," which would spit matter out at a location far away from the material's point of origin in space and time, TK said. Though scientists have observed evidence of black holes in the universe, white holes have never been found.

Wormholes (and the possibility of interstellar travel that they suggest) thus remain unproven, though Albert Einstein's theory of general relativity leaves room for the objects' existence.

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However, even though wormholes may or may not exist, scientists do know a lot about the behavior of light and gravitational waves. The latter are the ripples in space-time that swirl around massive objects such as black holes.

If you know how light around a potential wormhole is redshifted, you can then use the frequencies of gravitational waves, or how often they oscillate, to predict the symmetrical wormhole's shape, said study author Roman Konoplya. He is an associate professor with the Institute of Gravitation and Cosmology at the Peoples' Friendship University of Russia (RUDN).

Researchers - Way - Geometry - Shapes - Gravity

Typically, researchers work the other way around, looking at the geometry of known shapes to calculate how light and gravity behave, Konoplya told Live Science in an email.

There would be a couple of methods for checking the redshift near a potential wormhole, Konoplya said. One would use gravitational lensing, or the bending of light rays as they pass by massive objects — like, possibly, wormholes. This lensing would be measured in its effects on faint...
(Excerpt) Read more at: Live Science
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