Can gravitational waves be directly detected?

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ijaz

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Can gravitational waves be directly detected?
« on: 07/12/2015 05:34:02 »
Can gravitational waves be directly detected? If so how??
« Last Edit: 07/12/2015 08:18:39 by chris »

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Offline Space Flow

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Re: can gravitational waves be directly detected??
« Reply #1 on: 07/12/2015 05:48:23 »
What do you mean by "directly" detected?
If you mean can you somehow detect a GW passing without technology, then: No.
There is no way for someone that is part of the local spacetime to detect any change in that spacetime's shape. Everything is equally effected.
That's why with lasers we are counting on the small difference in space covered by the detector the speed of light will detect a deferential that is going to be tiny, but enough to change the interference pattern.
Gravitational Waves have never been directly detected by any means so far used....

Hope that helps
« Last Edit: 07/12/2015 05:50:12 by Space Flow »
We are made of Spacetime; with a sprinkling of Stardust.
Matter tells Spacetime how to Flow; Spacetime tells matter where to go

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Offline evan_au

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Re: Can gravitational waves be directly detected?
« Reply #2 on: 07/12/2015 09:44:28 »
Pulsars spiraling inwards provides a fair degree of confidence that gravitational waves are real. It was enough to convince the Nobel committee in 1993. But its a somewhat indirect proof.

As well as the ground-based interferometers, physicists are proposing a space-based interferometer that should be much more sensitive.

Several other approaches are being tried to detect gravitational waves, including monitoring the periods of pulsars, which could be affected by gravitational waves crossing our line of sight.