Accretion flows around exotic tidal wormholes I. Ray-tracing

Abstract

This paper investigates the various spherically symmetric wormhole solutions in the presence of tidal forces and applies numerous methods, such as test particle orbital dynamics, ray-tracing and microlensing. We make the theoretical predictions on the test particle orbital motion around the tidal wormholes with the use of normalized by ${\mathcal{L}}^2$ effective potential. In order to obtain the ray-tracing images (of both geometrically thin and thick accretion disks, relativistic jets), we properly modify the open source $\text{GYOTO}$ code with python interface. We applied this techniques to probe the accretion flows nearby the Schwarzschild-like and charged Reissner-Nördstrom (RS) wormholes (we assumed both charged RS wormhole and special case with the vanishing electromagnetic charge, namely Damour-Solodukhin (DS) wormhole). It was shown that the photon sphere for Schwarzschild-like wormhole presents for both thin and thick accretion disks and even for the vanishing tidal forces. Moreover, it was observed that $r_{\mathrm{ph}}\to \infty$ as $\alpha \to \infty$, which constraints $\alpha$ parameter to be sufficiently small and positive in order to respect the EHT observations. On the other hand, for the case of RS wormhole, photon sphere radius shrinks as $\Lambda \to \infty$, as it was predicted by the effective potential. In addition to the accretion disks, we as well probe the relativistic jets around two wormhole solutions of our consideration. Finally, with the help of star bulb microlensing, we approximate the radius of the wormhole shadow and as we found out, for Schild WH, $R_{\mathrm{Sh}}\approx r_0$ for ZTF and grows linearly with $\alpha$. On the contrary, shadow radius for charged wormholes slowly decreases with the growing trend of DS parameter $\Lambda$.

18 pages, 14 figures, revision submitted to A&A

References in corpus (20)

• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole
• First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole
• First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
• First M87 Event Horizon Telescope Results. II. Array and Instrumentation
• Modified-gravity wormholes without exotic matter
• Can accretion disk properties observationally distinguish black holes from naked singularities?
• Can accretion disk properties distinguish gravastars from black holes?
• Accretion disk onto boson stars: a way to supplant black holes candidates
• Black hole mimickers: regular versus singular behavior
• Gravitational lensing effect in traversable wormholes
• Magnetically Modified Spherical Accretion in GRMHD: Reconnection-Driven Convection and Jet Propagation
• GRMHD Simulations and Modeling for Jet Formation and Acceleration Region in AGNs
• Thin accretion disks around traversable wormholes
• A Killing Vector Treatment of Multiboundary Wormholes
• An exponential shape function for wormholes in modified gravity
• Can accretion properties distinguish between a naked singularity, wormhole and black hole?
• Accretion Flow onto Ellis-Bronnikov Wormhole
• Multi-wavelength torus-jet model for Sgr~A*
• Stress-energy of the quantized fields in the spacetime of the Damour-Solodukhin wormhole

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