Shadow and quasinormal modes of the Kerr-Newman-Kiselev-Letelier black hole

Abstract

We investigate the null geodesics and the shadow cast by the Kerr-Newman-Kiselev-Letelier (KNKL) black hole for the equation of state parameter ${\omega }_q=-2/3$ and for different values of the spacetime parameters, including the quintessence parameter $\gamma$, the cloud of string (CS) parameter $b$, the spin parameter $a$ and the charge $Q$ of the black hole. We notice that for the increasing values of the parameters $\gamma$ and $b$ the size of the shadow of the KNKL black hole increases and consequently the strength of the gravitational field of the black hole increases. On the other hand with increase in the charge $Q$ of the black hole the size of the shadow of the black hole decreases. Further with the increase in the values of the spin parameter $a$ of the KNKL black hole, we see that the distortion of the shadow of the black hole becomes more prominent. Moreover we use the data released by the Event Horizon Telescope (EHT) collaboration, to restrict the parameters $b$ and $\gamma$ for the KNKL black hole, using the shadow cast by the KNKL black hole. To this end, we also explore the relation between the typical shadow radius and the equatorial and polar quasinormal mods (QNMs) for the KNKL black hole and extend this correspondence to non-asymptotically flat spacetimes. We also study the emission energy rate from the KNKL black hole for the various spacetime parameters, and observe that it increases for the increasing values of both the parameters $\gamma$ and $b$ for fixed charge-to-mass and spin-to-mass ratios of the KNKL black hole. Finally, we investigate the effects of plasma on the photon motion, size and shape of the shadow cast by the KNKL black hole...

16 pages, 7 figures, 2 tables. Accepted for publication in Eur. Phys. J. C

References in corpus (26)

• 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
• Measurement of the Kerr Spin Parameter by Observation of a Compact Object's Shadow
• Apparent shape of super-spinning black holes
• Are eikonal quasinormal modes linked to the unstable circular null geodesics?
• Shadow of five-dimensional rotating Myers-Perry black hole
• Photon Rings around Kerr and Kerr-like Black Holes
• The Kerr Metric
• Gravitational Lensing in presence of Plasma: Strong Lens Systems, Black Hole Lensing and Shadow
• Superradiance evolution of black hole shadows revisited
• Shadows of Sgr A${}^{\ast }$ Black Hole Surrounded by Superfluid Dark Matter Halo
• The Quasinormal Mode Spectrum of a Kerr Black Hole in the Eikonal Limit
• Quasiperiodic Oscillations, Quasinormal Modes and Shadows of Bardeen-Kiselev Black Holes
• Gravitational lensing in a non-uniform plasma
• Kerr-Newman-AdS Black Hole In Quintessential Dark Energy
• Axion-plasmon or magnetized plasma effect on an observable shadow and gravitational lensing of a Schwarzschild black hole
• Equatorial photon motion in the Kerr-Newman spacetimes with a non-zero cosmological constant
• The shadow and photon sphere of the charged black hole in Rastall gravity
• Note on the effect of a massive accretion disk in the measurements of black hole spins
• Relating Black Hole Shadow to Quasinormal Modes for Rotating Black Holes
• Influence of an anisotropic matter field on the shadow of a rotating black hole
• Stationary Charged Scalar Clouds around Black Holes in String Theory
• Testing Gravity with Black Hole Shadow Subrings
• Spinning black holes with a separable Hamilton-Jacobi equation from a modified Newman-Janis algorithm
• Equatorial and polar quasinormal modes and quasiperiodic oscillations of quantum deformed Kerr black hole
• Black hole solutions in modified gravity induced by quantum metric fluctuations

Cited by in corpus (2)

• Thermodynamics and Shadows of GUP-corrected Black Holes with Topological Defects in Bumblebee Gravity
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