« on: 24/11/2021 03:25:56 »
I am still wondering if we can still say that these very asymmetric "rings" carry away their energy without any loss of power at all as they encounter obstacles in their path.A spiral is still symmetric, just not spherically symmetric.
By time-symmetry, if matter (say a binary star) can emit gravitational waves and lose energy in doing so, then such a system can hypothetically absorb them, gaining energy in the process, but the passing wave is not going to be focused in such a way that any measurable effect will occur. It would have to look like the time-reversed wave spiraling in, which isn't how it looks when it was emitted from afar.
So would a neutron star or another black hole absorb their energy?A lone mass like a neutron star which seems no more capable of absorbing them as emitting them. Any mass will however deflect the waves, breaking the symmetry like water waves crossing a shallow spot. A black hole must absorb the energy as there is no worldline through them. They're also the only things that absorb dark matter.
Or does the gravitational wave go through these objects as if they were not there?Like dark matter, it goes through them like they were transparent, but still deflected by the gravity.
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