In static spherically symmetric throat spacetimes, EM and GW perturbations (ℓ≥1) experience strong sub-barrier suppression below their barrier-top frequencies, while the static gravitational monopole (ℓ=0) transmits with polynomial attenuation, establishing a universal constraint-wave asymmetry.
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Greybody lower bounds and absorption cross sections for massless fields of spins 0, 1, and 1/2 are computed in the Euler-Heisenberg black hole with perfect fluid dark matter, revealing monotonic increases with frequency and parameter-dependent deformations of the spectra.
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Electromagnetic, gravitational wave, and static gravitational transmission through throat spacetimes: a constraint-wave asymmetry
In static spherically symmetric throat spacetimes, EM and GW perturbations (ℓ≥1) experience strong sub-barrier suppression below their barrier-top frequencies, while the static gravitational monopole (ℓ=0) transmits with polynomial attenuation, establishing a universal constraint-wave asymmetry.
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Perturbations and greybody bounds of Euler-Heisenberg black holes surrounded by perfect fluid dark matter
Greybody lower bounds and absorption cross sections for massless fields of spins 0, 1, and 1/2 are computed in the Euler-Heisenberg black hole with perfect fluid dark matter, revealing monotonic increases with frequency and parameter-dependent deformations of the spectra.