Scientists says Gravitational waves could reveal a Stringy Universe, - Physics-Astronomy.org

Scientists says Gravitational waves could reveal a Stringy Universe,

IN February, physicists gave us one of the most exciting scientific discoveries of the century – the 1ST direct evidence of gravitational waves. These waves are like ripples that expand after a major event in space, such as two black holes merging or the explosion of a huge star.The discovery gave us a whole fresh way of looking at the Universe, and that's something two physicists in Spain are taking benefit of, by testing out another scientific hypothesis: string theory. And if their ideas are correct, it could basically change our thinking about the nature of the Universe.

First off, it's important to understand how gravitational waves work. In the very early on Universe, the whole thing was much denser than it is now, which resulted in a great deal of light scattering. Those photon signals can be a big problem when it comes to peering deep into the Universe to look back in time, because there's so much background noise to take into account. What makes gravitational waves special is that their movements don't appear to be affected by interfering electrons and protons. In fact, gravitational waves might agree to us to observe objects and events that don't emit any light at all, including the cosmic 'strings' that underlie the famous string theory hypothesis.
String theory aims to give a unified approach to explaining the fundamental structure of the Universe. It suggests that cosmic strings - incredibly long and thin defects in the curvature of space and time - formed right after the Big Bang. Unfortunately, these cosmic strings are thought to have been obliterated many aeons ago, so find a huge number of them, we'd have to go back to the earliest moments of the Universe.
And that brings us back to gravitational waves. Physicists Isabel Fernandez-Nunez and Oleg Bulashenko of the University of Barcelona believe that one could lead us to the other - gravitational waves could help us find cosmic strings.
Fernandez-Nunez and Bulashenko started off by picturing a string as a sharp crease in space-time, and then considered how a gravitational wave would pass through that crease. If we can find wave ripples that match these calculations, then we might have evidence of a cosmic string, they suggest.
There are hurdles to overcome before we can test out their hypothesis, because right now, we don't have the type of technology to measure gravitational waves in the way that the pair's hypothesis require. Plus we'd also have to be very lucky to find a pattern of just the right intensity from our position on Earth.
Scientists says Gravitational waves could reveal a stringy universe,

No comments

Powered by Blogger.