Influences of modified Chaplygin dark fluid around a black hole
arXiv:2407.12142 · doi:10.1016/j.physletb.2024.139125
Abstract
In this work, we study a static, spherically charged AdS black hole within a modified cosmological Chaplygin gas (MCG), adhering to the calorific equation of state, as a unified dark fluid model of dark energy and dark matter. We explore the influence of model parameters on several characteristics of the MCG-motivated charged AdS black hole (MCG-AdSBH), including the geodesic structure and some astrophysical phenomena such as null trajectories, shadow silhouettes, light deflection angles, and the determination of greybody bounds. We then discuss how the model parameters affect the Hawking temperature, remnant radius, and evaporation process of the MCG-AdSBH. Quasinormal modes are also investigated using the eikonal approximation method. Constraints on the MCG-AdSBH parameters are derived from EHT observations of M87* and Sgr A*, suggesting that MCG-AdSBH could be strong candidates for astrophysical black hole.
8 pages, 11 figures, 4 tables
References in corpus (18)
- First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
- First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way
- First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole
- First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
- Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A
- First Sagittarius A* Event Horizon Telescope Results. VI: Testing the Black Hole Metric
- Detection of the Schwarzschild precession in the orbit of the star S2 near the Galactic centre massive black hole
- Relativistic images of Schwarzschild black hole lensing
- Constraints on black-hole charges with the 2017 EHT observations of M87*
- The mass distribution in the Galactic Centre from interferometric astrometry of multiple stellar orbits
- Bounding the greybody factors for Schwarzschild black holes
- Distortions of images of Schwarzschild lensing
- Imaging compact boson stars with hot-spots and thin accretion disks
- Thermodynamics and evaporation of a modified Schwarzschild black hole in a non--commutative gauge theory
- Conservation of distortion of gravitationally lensed images
- Phase structure of charged AdS black holes surrounded by exotic fluid with modified Chaplygin equation of state
- Regular charged black holes, energy conditions and quasinormal modes
- Accelerating AdS black holes in gravity's rainbow