As far as I know, a black hole is a singularity in the space-time. The space-time becomes so curved that the geodesics can't get out, i.e., the gravitational field becomes so strong that information can not get out.(adsbygoogle = window.adsbygoogle || []).push({});

OK! But what about gravitational waves? As far as I know, gravitational waves are perturbations in the space-time and hence I suppose that they can climb the space-time curvature of the black hole.

I believe that this must be wrong since otherwise the black hole would emit information from inside of the event horizon which I never heard of.

So thinking about this I have come across with some questions. Do the gravitational waves also follow a geodesic in space-time? How can one define a geodesic for the motion of a perturbation of the space-time along this very same space-time? Do the trajectory of a gravitational wave also bend due to the presence of a gravitational field?

Thanks for any answer.

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# Black Holes and Gravitational Waves

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