Numerical relativity simulations of charged black hole mergers demonstrate identical gravitational dynamics across electromagnetic duality rotations, with electromagnetic radiation polarization rotated by the duality angle.
Sperhake, Binary black-hole evolutions of excision and puncture data, Phys
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Numerical simulations of equal-mass boson-star mergers reveal larger waveform deviations from black-hole binaries in late inspiral and merger, plus odd multipole excitations for certain scalar-field phases, with some signals degenerate until IMR consistency tests are applied.
Black holes with synchronized or resonant scalar hair exhibit dynamical splitting in which the horizon is ejected from the bosonic cloud center in the very hairy regime.
Black holes with resonant scalar hair are dynamically unstable in 3+1 numerical relativity, decaying via fission or absorption into bald black holes.
citing papers explorer
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Electromagnetic duality degeneracy in dynamical black hole mergers
Numerical relativity simulations of charged black hole mergers demonstrate identical gravitational dynamics across electromagnetic duality rotations, with electromagnetic radiation polarization rotated by the duality angle.
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Lessons from binary dynamics of inspiralling equal-mass boson-star mergers
Numerical simulations of equal-mass boson-star mergers reveal larger waveform deviations from black-hole binaries in late inspiral and merger, plus odd multipole excitations for certain scalar-field phases, with some signals degenerate until IMR consistency tests are applied.
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Splitting the Gravitational Atom: Instabilities of Black Holes with Synchronized or Resonant Hair
Black holes with synchronized or resonant scalar hair exhibit dynamical splitting in which the horizon is ejected from the bosonic cloud center in the very hairy regime.
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Spontaneous spherical symmetry breaking of black holes with resonant hair
Black holes with resonant scalar hair are dynamically unstable in 3+1 numerical relativity, decaying via fission or absorption into bald black holes.