3 papers
gr-qc2026
Polar perturbations of dilaton-Euler-Heisenberg black holes
Sheng-Yuan Li, Yun Soo Myung, Ming Zhang +2
We investigate the quasinormal modes of polar metric-dilaton perturbations around the dilaton-Euler-Heisenberg (dEH) black holes with dilaton hair. The dEH black holes are obtained…
gr-qc2026
Quasinormal modes of massless scalar and electromagnetic perturbations for Euler-Heisenberg black holes surrounded by perfect fluid dark matter
Chengfu Feng, Sheng-Yuan Li, Xufen Zhang +3
We investigate the quasinormal modes of massless scalar and electromagnetic perturbations in charged Euler--Heisenberg black holes surrounded by perfect fluid dark matter. The quas…
gr-qc2026
Quasinormal modes and greybody factors of magnetically charged de Sitter black holes probed by massless external fields in Einstein Euler Heisenberg gravity
Ming Zhang, Guo-Xin Chen, Lei Zhang +3
This paper investigates the perturbation dynamics of massless scalar and electromagnetic fields on magnetically charged de Sitter (dS) black holes within the framework of string-in…