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clear up the question a bit.
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Tom Andersen
Tom Andersen
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I will re-form your question by ignoring the second and third sentence, which are not too clear.

Can gravitational wave create anti-gravity, i.e. repulsive gravity?

Yes.

Its the same as for light: if light - which carries momentum - is absorbed by an object then that object moves away from the light source.

The trick with gravitational waves is that normal matter does not absorb gravitational waves very well. (But there is always some absorption).

To Maximize the Effect:

If gravitational waves impinge on any rotating object there can be repulsion or attraction. The effect is only really strong when waves impinge on a rapidly rotating compact object like a spinning black hole. To get a nice large effect the period of the waves need to be of the same size as the spin rate.

The effect when its an near coherence mode is called super radiance.

For repulsion the effect is actually an absorption of gravitational energy from the wave, so that the object starts to move in the same direction as the wave. See Figure 16 of Brito: - http://arxiv.org/pdf/1501.06570v3.pdf

The effect can be quite pronounced. 10% of the incoming energy of the wave can be absorbed.

Yes.

Its the same as for light: if light - which carries momentum - is absorbed by an object then that object moves away from the light source.

The trick with gravitational waves is that normal matter does not absorb gravitational waves very well. (But there is always some absorption).

To Maximize the Effect:

If gravitational waves impinge on any rotating object there can be repulsion or attraction. The effect is only really strong when waves impinge on a rapidly rotating compact object like a spinning black hole. To get a nice large effect the period of the waves need to be of the same size as the spin rate.

The effect when its an near coherence mode is called super radiance.

For repulsion the effect is actually an absorption of gravitational energy from the wave, so that the object starts to move in the same direction as the wave. See Figure 16 of Brito: - http://arxiv.org/pdf/1501.06570v3.pdf

The effect can be quite pronounced. 10% of the incoming energy of the wave can be absorbed.

I will re-form your question by ignoring the second and third sentence, which are not too clear.

Can gravitational wave create anti-gravity, i.e. repulsive gravity?

Yes.

Its the same as for light: if light - which carries momentum - is absorbed by an object then that object moves away from the light source.

The trick with gravitational waves is that normal matter does not absorb gravitational waves very well. (But there is always some absorption).

To Maximize the Effect:

If gravitational waves impinge on any rotating object there can be repulsion or attraction. The effect is only really strong when waves impinge on a rapidly rotating compact object like a spinning black hole. To get a nice large effect the period of the waves need to be of the same size as the spin rate.

The effect when its an near coherence mode is called super radiance.

For repulsion the effect is actually an absorption of gravitational energy from the wave, so that the object starts to move in the same direction as the wave. See Figure 16 of Brito: - http://arxiv.org/pdf/1501.06570v3.pdf

The effect can be quite pronounced. 10% of the incoming energy of the wave can be absorbed.

Source Link
Tom Andersen
Tom Andersen
  • 1.4k
  • 10
  • 14

Yes.

Its the same as for light: if light - which carries momentum - is absorbed by an object then that object moves away from the light source.

The trick with gravitational waves is that normal matter does not absorb gravitational waves very well. (But there is always some absorption).

To Maximize the Effect:

If gravitational waves impinge on any rotating object there can be repulsion or attraction. The effect is only really strong when waves impinge on a rapidly rotating compact object like a spinning black hole. To get a nice large effect the period of the waves need to be of the same size as the spin rate.

The effect when its an near coherence mode is called super radiance.

For repulsion the effect is actually an absorption of gravitational energy from the wave, so that the object starts to move in the same direction as the wave. See Figure 16 of Brito: - http://arxiv.org/pdf/1501.06570v3.pdf

The effect can be quite pronounced. 10% of the incoming energy of the wave can be absorbed.