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Resumming Kerr Quasinormal-Mode Frequencies: Accuracy and Breakdown Near Extremality
Jierui Hu, Kent Yagi, Nicolas Yunes
Kerr black-hole quasinormal modes are usually computed with numerical methods, but analytic approximations remain useful for identifying the physics that controls different parts o…
Gravitational radiation from a particle plunging into a Schwarzschild black hole: frequency-domain and semirelativistic analyses
Hector O. Silva, Giovanni Tambalo, Kostas Glampedakis +1
We revisit the classic problem of gravitational wave emission by a test particle plunging into a Schwarzschild black hole both in the frequency-domain Regge-Wheeler-Zerilli formali…
Gravitational wave polarizations with different propagation speeds
Kristen Schumacher, Nicolas Yunes, Kent Yagi
In some modified theories of gravity, gravitational waves can contain up to six different polarizations, which can travel at speeds different from that of light. Searches for these…
I-Love-Q in Einstein-aether Theory
Kai Vylet, Siddarth Ajith, Kent Yagi +1
Although Lorentz symmetry is a staple of General Relativity (GR), there are several reasons to believe it may not hold in a more advanced theory of gravity, such as quantum gravity…
Gravitational wave constraints on Einstein-æther theory with LIGO/Virgo data
Kristen Schumacher, Scott Ellis Perkins, Ashley Shaw +2
Lorentz symmetry is a fundamental property of Einstein's theory of general relativity that one may wish to test with gravitational wave observations. Einstein-aether theory is a mo…
Gravitational wave energy-momentum tensor and radiated power in a strongly curved background
Yuchen Du, Diana Vaman, Kent Yagi
Allowing for the possibility of extra dimensions, there are two paradigms: either the extra dimensions are hidden from observations by being compact and small as in Kaluza-Klein sc…