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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Tsallis statistics applied to Reissner-Nordström black holes yields a generalized entropy leading to Van der Waals-like phase transitions whose critical behavior is reflected in photon-sphere observables.
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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.
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Black Hole Thermodynamics via Tsallis Statistical Mechanics and Phase Transitions Probed by Optical Characteristics
Tsallis statistics applied to Reissner-Nordström black holes yields a generalized entropy leading to Van der Waals-like phase transitions whose critical behavior is reflected in photon-sphere observables.