Gravitational waves are also redshifted?

In summary, gravitational waves are ripples in space-time created by the acceleration of massive objects. They are redshifted when traveling through expanding space, similar to the redshift of light from distant galaxies. The redshift of gravitational waves provides valuable information about the source, distance, and velocity of the waves, as well as helping us understand the expansion rate of the universe and test theories of gravity. The redshift is determined by measuring the wavelength of the waves, and it has been successfully detected by LIGO. This detection confirms the existence of gravitational waves and allows for further study of their properties.
  • #1
Dmitry67
2,567
1
I want to confirm one thing.

Say, I have an emitter of gravitational waves with frequency f.
I throw it into black hole.
Is it correct to assume that:

1. frequency f and energy of GR waves are decreased in exactly the same manner as frequency and energy of ordinary light?
2. and GR waves can't escape from regions inside the horizon?

Thanks.
 
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  • #2
Yes to both.
 

1. What are gravitational waves?

Gravitational waves are ripples in the fabric of space-time that are created when massive objects accelerate, such as when two black holes merge.

2. How are gravitational waves redshifted?

Gravitational waves are redshifted when they travel through expanding space. This is similar to the redshift of light from distant galaxies due to the expansion of the universe.

3. What is the significance of redshifted gravitational waves?

The redshift of gravitational waves can provide information about the distance and velocity of the source of the waves. It can also help us understand the expansion rate of the universe and test theories of gravity.

4. How is redshift determined in gravitational waves?

The redshift of gravitational waves is determined by measuring the wavelength of the waves. As the waves travel through expanding space, their wavelength increases, resulting in a redshift.

5. Can redshifted gravitational waves be detected?

Yes, redshifted gravitational waves have been detected by the Laser Interferometer Gravitational-Wave Observatory (LIGO). By detecting the redshift, scientists can confirm the presence of gravitational waves and study their properties.

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