Stability of the spacetime of a magnetized compact object
arXiv:2411.11117 · doi:10.1103/PhysRevD.111.024043
Abstract
We investigate the stability of scalar perturbations around a magnetized stationary compact object in General Relativity. The considered object is one of the simplest exact solutions of Einstein electrovacuum equations corresponding to a spheroidal body endowed with a dipole magnetic moment. It is effectively constructed by imposing a perfect reflection (mirror) boundary condition on a central region of the Gutsunaev-Manko spacetime. A time-domain analysis of the perturbations reveals a quasinormal phase followed by a power-law decaying tail. Our findings suggest that the exterior region of the magnetized compact object is stable in the entire parameter space. Moreover, the system tends to become generically more stable the stronger the magnetization of the central object is. Such findings can be useful for the qualitative understanding of more realistic astrophysical situations involving highly magnetized sources.
10 pages, 5 figures. Minor corrections. Final version to appear in the PRD
References in corpus (16)
- Quasinormal modes of black holes: from astrophysics to string theory
- Magnetars
- A bright millisecond-duration radio burst from a Galactic magnetar
- First Sagittarius A* Event Horizon Telescope Results. VI: Testing the Black Hole Metric
- The Physical Mechanisms of Fast Radio Bursts
- Modeling Ringdown: Beyond the Fundamental Quasi-Normal Modes
- Heun Functions and Some of Their Applications in Physics
- Detection of two bright radio bursts from magnetar SGR 1935+2154
- Stability of Reissner-Nordström black hole in de Sitter background under charged scalar perturbation
- Exact Solutions of Regge-Wheeler Equation and Quasi-Normal Modes of Compact Objects
- Field propagation in de Sitter black holes
- The BINGO Project I: Baryon Acoustic Oscillations from Integrated Neutral Gas Observations
- Instability of Reissner-Nordström-AdS black hole under perturbations of a scalar field coupled to Einstein tensor
- Scalar/Dirac perturbations of the Reissner-Nordström black hole and Painlevé transcendents
- The BINGO Project IX: Search for Fast Radio Bursts -- A Forecast for the BINGO Interferometry System
- Stability aspects of relativistic thin magnetized disks