Computes quasinormal modes via 13th-order WKB with Padé, greybody factors by numerical integration, and Hawking/neutrino spectra for Euler-Heisenberg plus perfect fluid dark matter black holes, finding PFDM increases damping and suppresses transmission while EH effects are weaker.
Shadow, Quasinormal Modes, Sparsity, and Energy Emission Rate of Euler-Heisenberg Black Hole Surrounded by Perfect Fluid Dark Matter
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abstract
In this work, we investigate the optical, dynamical, and radiative properties of an Euler--Heisenberg black hole immersed in a perfect fluid dark matter (PFDM) background. We analyze the photon sphere and shadow, the scalar quasinormal-mode spectrum in the eikonal regime, the grey-body factor through the eikonal QNM correspondence, the sparsity of Hawking radiation, and the corresponding energy emission rate. Our results show that both the black-hole charge and the PFDM parameter significantly affect the photon sphere, shadow size, quasinormal frequencies, Hawking temperature, and emission profile, whereas the Euler--Heisenberg correction is typically subleading in the parameter range explored, although it may become more visible in strong-charge regimes for selected observables. Overall, the dark-matter environment provides the dominant imprint on the phenomenology of the system, indicating that shadow and ringdown-related quantities may serve as useful probes of PFDM effects within the approximations considered.
fields
gr-qc 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
Quasinormal frequencies and greybody factors for massless scalar and electromagnetic perturbations are calculated for charged Euler-Heisenberg black holes surrounded by perfect fluid dark matter, showing that charge Q, nonlinear parameter a, dark matter parameter λ, and angular number l modify the有效
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Scattering, Hawking Radiation and Neutrino Energy Deposition in Euler-Heisenberg Black Holes Surrounded by Perfect Fluid Dark Matter
Computes quasinormal modes via 13th-order WKB with Padé, greybody factors by numerical integration, and Hawking/neutrino spectra for Euler-Heisenberg plus perfect fluid dark matter black holes, finding PFDM increases damping and suppresses transmission while EH effects are weaker.
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Quasinormal modes of massless scalar and electromagnetic perturbations for Euler-Heisenberg black holes surrounded by perfect fluid dark matter
Quasinormal frequencies and greybody factors for massless scalar and electromagnetic perturbations are calculated for charged Euler-Heisenberg black holes surrounded by perfect fluid dark matter, showing that charge Q, nonlinear parameter a, dark matter parameter λ, and angular number l modify the有效