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Slightly off topic question, but I am curious about the total energy content off gravitational wave energy in the universe. Are there any estimates? Or a way to
by ACAVJW4H 6y ago
Slightly off topic question, but I am curious about the total energy content off gravitational wave energy in the universe. Are there any estimates? Or a way to calculate it? Is this figure taken into account when calculating the total energy of the universe?
- astro123 6y agoThat's an interesting question. I've never thought about it or seen that taken into account (its not something we fit to when constraining cosmology) I just looked around and LIGO has constrained Omega_GW < 1e-7 (they find no evidence, but that is the limit of their sensitivity). This is at least an order of magnitude smaller than Omega_Radiation and so will have a negligible effect on cosmology/total energy content. https://arxiv.org/pdf/1612.02029.pdf https://arxiv.org/pdf/1612.02029.pdf
- simonh 6y agoWe have estimates of the energy or mass formed into black holes, and at the end of the day this is just black hole energy that happens to have been later converted into a different form.
- thechao 6y agoIgnoring dark energy, we expect gravitational energy to be identical to non-gravitational energy; ie, “half”.