Natural polynomials for Schwarzschild and Kerr quasinormal modes are Pollaczek-Jacobi polynomials with complex parameters, with recurrence peaking at the physical overtone index for Schwarzschild.
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In shift-symmetric Horndeski gravity, scalar field QNM contamination of black hole ringdowns appears at the same perturbative order as frequency shifts, and can dominate them if scalar amplitude suppression is relaxed.
Constrained polarization model for Kerr ringdown modes enables inclination inference from two-detector data for non-precessing mergers but introduces biases when applied to precessing systems.
Charged compact binaries lose energy via both gravitational and electromagnetic radiation at next-to-leading order, yielding modified orbital frequency evolution and charge-dependent stability for circular orbits.
Using TaylorF2 post-Newtonian waveforms truncated at ISCO, the study finds that Einstein Telescope and Cosmic Explorer can reach SNR of 100-350 and measure primary spin to 10^{-4}-10^{-3} precision for 0.1-2 solar mass exotic compact objects.
Kerr spin produces longer or shorter proper infall times than Schwarzschild for equatorial geodesics, with the difference encoded in the Raychaudhuri integrand via expansion and shear.
Numerical solutions show that leading effective-field-theory corrections to the Kerr metric grow with spin and are largest near extremality.
Numerical study of timelike geodesics and millihertz gravitational waves from periodic orbits around a Schwarzschild black hole embedded in a (1,4,γ) Dehnen dark matter halo.
citing papers explorer
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Properties of natural polynomials for Schwarzschild and Kerr black holes
Natural polynomials for Schwarzschild and Kerr quasinormal modes are Pollaczek-Jacobi polynomials with complex parameters, with recurrence peaking at the physical overtone index for Schwarzschild.
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Beyond black hole spectroscopy: Quasinormal mode contamination by massless scalars
In shift-symmetric Horndeski gravity, scalar field QNM contamination of black hole ringdowns appears at the same perturbative order as frequency shifts, and can dominate them if scalar amplitude suppression is relaxed.
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Polarization Analysis of Ringdown Signals
Constrained polarization model for Kerr ringdown modes enables inclination inference from two-detector data for non-precessing mergers but introduces biases when applied to precessing systems.
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Post-Newtonian dynamics of charged compact binaries
Charged compact binaries lose energy via both gravitational and electromagnetic radiation at next-to-leading order, yielding modified orbital frequency evolution and charge-dependent stability for circular orbits.
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Probing (sub-)solar-mass black holes and superspinars with current and next-generation gravitational-wave observatories
Using TaylorF2 post-Newtonian waveforms truncated at ISCO, the study finds that Einstein Telescope and Cosmic Explorer can reach SNR of 100-350 and measure primary spin to 10^{-4}-10^{-3} precision for 0.1-2 solar mass exotic compact objects.
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Covariant interpretation of proper infall times in Kerr spacetime
Kerr spin produces longer or shorter proper infall times than Schwarzschild for equatorial geodesics, with the difference encoded in the Raychaudhuri integrand via expansion and shear.
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Leading effective field theory corrections to the Kerr metric at all spins
Numerical solutions show that leading effective-field-theory corrections to the Kerr metric grow with spin and are largest near extremality.
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Gravitational Wave Signatures of Schwarzschild Black Hole in a Generalized Dehnen-Type $(1,4,\gamma)$ Dark Matter Halo
Numerical study of timelike geodesics and millihertz gravitational waves from periodic orbits around a Schwarzschild black hole embedded in a (1,4,γ) Dehnen dark matter halo.