Weak Deflection Angle and Shadow by Tidal Charged Black Hole

Javed, Wajiha; Hamza, Ali; Овгун, Али

doi:10.3390/universe7100385

Cited by 22 publications

(5 citation statements)

References 105 publications

(77 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, the lens equations may be similar in different physical systems. For example, [40,41] studied the lensing effect of a binary system, and the lensing by charged black holes are investigated in [42][43][44][45][46][47][48]. These works share similar but not equivalent lens equations with us.…”

Section: Discussionmentioning

confidence: 99%

Microlensing effect of charged spherically symmetric wormhole

Liu¹,

Zhu²,

Luo³

et al. 2022

Preprint

View full text Add to dashboard Cite

We systematically investigate the microlensing effect of a charged spherically symmetric wormhole (Ellis wormhole as an example), where the light source is remote from the throat. Remarkably, there will be at most three images by considering the charge part. We study all situations including three images, two images, and one image, respectively. The numerical result shows that the range of total magnification is from 10 5 to 10 −2 depending on various metrics. However, we cannot distinguish the case that forms three images or only one image as the total magnification is of order 10 5 . Finally, our theoretical investigation could shed new light on exploring the wormhole with the microlensing effect.

show abstract

Section: Discussionmentioning

confidence: 99%

Microlensing effect of charged spherically symmetric wormhole

Liu¹,

Zhu²,

Luo³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…It is clear that there exist extra correction terms associated with the bounce parameter labeled δ bounce . In general, for a traditional black hole the deflection angle increases [56,57] continuously with the decrease of the impact parameter b and it eventually diverges. The deflection angle for the Reissner-Nordström black hole as a special case (corresponding to a = 0 in the charged black-bounce) is shown in the left panel of Fig.…”

Section: Gravitational Lensing In the Weak Field Limitmentioning

confidence: 97%

Bounce corrections to gravitational lensing, quasinormal spectral stability and gray-body factors of Reissner-Nordström black holes

Guo¹,

Miao²

2022

Preprint

View full text Add to dashboard Cite

Gravitational lensing in the weak field limit, quasinormal spectra, and gray-body factors are investigated in the Reissner-Nordström spacetime corrected by bounce parameters. Using the Gauss-Bonnet theorem, we analyze the effects of bounce corrections to the weak gravitational deflection angle and find that the divergence of the deflection angle can be suppressed by a bounce correction in the Reissner-Nordström spacetime. We also notice that the bounce correction plays the same role as the Morse potential in the deflection angle. Moreover, we derive the perturbation equations with the spin-dependent Regge-Wheeler potential and discuss the quasinormal spectral stability. We observe that the quasinormal spectra decrease for both the massless scalar and electromagnetic field perturbations. We further study the transmission probability of particles scattered by the Regge-Wheeler potential and reveal that the bounce correction introduced into the Reissner-Nordström spacetime increases the gray-body factors of perturbation fields.

show abstract

“…[135][136][137][138][139][140][141][142][143][144][145][146]. Some other recent interesting works relating the effects of plasma on the optical properties of BHs in Einstein gravity and other theories of gravity can be found in literature [147][148][149][150][151][152]. Inspired by the interesting results available in literature from the study of the optical properties of different BHs, in this work, we explore the optical properties such as the weak gravitational lensing and the shadow cast by the electrically charged and spherically symmetric static Kiselev BH in the string cloud background in the presence of plasma.…”

Section: Introductionmentioning

confidence: 99%

Weak deflection angle and shadow cast by the charged-Kiselev black hole with cloud of strings in plasma*

Atamurotov

Hussain²,

Mustafa³

et al. 2023

Chinese Phys. C

Self Cite

View full text Add to dashboard Cite

In this work, the gravitational deflection angle of photon in the weak field limit (or the weak deflection angle) and shadow cast by the electrically charged and spherically symmetric static Kiselev black hole (BH) in the string cloud background are investigated. The influence of the BH charge $Q$, the quintessential parameter $\gamma$ and the string cloud parameter $a$ is studied on the weak deflection angle using the Gauss-Bonnet theorem, on the radius of photon spheres and on the size of the BH shadow in the spacetime geometry of the charged-Kiselev BH in string clouds. Moreover, we study the effects of plasma (uniform and non-uniform) on the weak deflection angle and on the shadow cast by the charged-Kiselev BH surrounded by the clouds of strings. In the presence of uniform/nonuniform plasma medium, increase in the cloud of string parameter $a$, increases the deflection angle $\alpha$. On the other hand decrease in the BH charge $Q$, decreases the deflection angle. Further we observe that an increase of the BH charge $Q$ causes a decrease in the size of the shadow of the BH. We notice that with increase in the values of the parameters $\gamma$ and $a$, the size of the BH shadow also increases and therefore the intensity of the gravitational field around the charged-Kiselev BH in string clouds increases. Thus the gravitational field of the charged-Kiselev BH in string cloud background would be stronger than the field produced by the pure Reissner-Nordstrom BH. Moreover, we use the data released by the Event Horizon Telescope (EHT) collaboration, for the supermassive BHs M87* and Sgr A*, to obtain constraints on the values of the parameters $\gamma$ and $a$.

show abstract

Weak Deflection Angle and Shadow by Tidal Charged Black Hole

Cited by 22 publications

References 105 publications

Microlensing effect of charged spherically symmetric wormhole

Microlensing effect of charged spherically symmetric wormhole

Bounce corrections to gravitational lensing, quasinormal spectral stability and gray-body factors of Reissner-Nordström black holes

Weak deflection angle and shadow cast by the charged-Kiselev black hole with cloud of strings in plasma*

Contact Info

Product

Resources

About