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Long-lived quasinormal modes and asymptotic tails of regular Schwarzschild-like black holes in the presence of a magnetic field

Akbar DavlatalievUlugh Beg Astronomical Institute of the Uzbekistan Academy of Sciences, Astronomy St. 33, Tashkent, 100052, UzbekistanBakhtiyor NarzilloevSamarkand State University, University avenue 15, Samarkand, 140104, UzbekistanIbrar HussainSchool of Electrical Engineering and Computer Science, National University of Sciences and Technology, H-12, Islamabad, PakistanAhmadjon AbdujabbarovUlugh Beg Astronomical Institute of the Uzbekistan Academy of Sciences, Astronomy St. 33, Tashkent, 100052, UzbekistanBobomurat AhmedovUlugh Beg Astronomical Institute of the Uzbekistan Academy of Sciences, Astronomy St. 33, Tashkent, 100052, Uzbekistan

Physics Letters Bjournal2025en

Ochiq kirishOlmos

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ABI

Annotatsiya

We analyze the evolution of perturbations of a (charged) massive scalar field near a regular Simpson-Visser black hole, allowing for a non-zero external magnetic field. We show that the damping rate of the quasinormal frequencies is strongly suppressed by both the magnetic field and the mass term, with indications that arbitrarily long-lived modes, or quasi-resonances, may exist in the spectrum. In the time domain, the quasinormal ringing transitions into slowly decaying oscillatory tails, which are qualitatively distinct from the massive tails observed in the absence of a magnetic field. For nonzero multipole and azimuthal numbers, the power-law envelope characteristic of cases without a magnetic field transforms into an oscillatory envelope that cannot be easily fitted with a simple analytical formula.

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Mavzular

Pulsars and Gravitational Waves Research Black Holes and Theoretical Physics Astrophysical Phenomena and Observations

Identifikatorlar

DOI: 10.1016/j.physletb.2025.139868

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