Deflection Angle of Photon from Magnetized Black Hole and Effect of Nonlinear Electrodynamics

Javed, Wajiha; Abbas, Jameela; Овгун, Али

doi:10.20944/preprints201903.0260.v1

Cited by 6 publications

(5 citation statements)

References 27 publications

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“…Stunningly, this method was shown in a suitable way to calculate the deflection angle in spacetimes with topological defects by cosmic strings and global monopoles [38][39][40][41]. This method has been utilized in various papers for different types of spacetimes [42][43][44][45][46][47][48][49][50][51][52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Effect of the quintessential dark energy on weak deflection angle by Kerr–Newmann Black hole

2020

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In this work, we study the weak gravitational lensing in the background of Kerr-Newman black hole with quintessential dark energy. Initially, we compute the deflection angle of light by charged black hole with quintessential dark energy by utilizing the Gauss-Bonnet theorem. Firstly, we suppose the light rays on the equatorial plane in the axisymmetric spacetime. In doing so, we first find the corresponding optical metrics and then calculate the Gaussian optical curvature to utilize in Gauss-Bonnet theorem. Consequently, we calculate the deflection angle of light for rotating charged black hole with quintessence. Additionally, we also find the deflection angle of light for Kerr-Newman black hole with quintessential dark energy. In order to verify our results, we derive deflection angle by using null geodesic equations which reduces to the deflection angle of Kerr solution with the reduction of specific parameters. Furthermore, we analyze the graphical behavior of deflection angle Θ w.r.t to impact parameter b. Our graphical analysis retrieve various results regarding to the deflection angle by the Kerr-Newman black hole with quintessential dark energy.

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Section: Introductionmentioning

confidence: 99%

Effect of the quintessential dark energy on weak deflection angle by Kerr–Newmann Black hole

2020

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“…The contribution of the plasma term is apparent in every case such that if ω e /ω ∞ → 0 , all of the above expressions boil down to their non-plasmic counterparts. Conclusively, the influence of plasma is distinctly discernible, as shown graphically by [79].…”

Section: Examples: Black Holesmentioning

confidence: 83%

Deriving Weak Deflection Angle by Black Holes or Wormholes using Gauss-Bonnet Theorem

Kumaran,

Övgün

2021

Preprint

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In this review, various researches on finding the bending angle of light deflected by a massive gravitating object which regard the Gauss-Bonnet theorem as the premise have been revised. Primarily, the Gibbons and Werner method is studied apropos of the gravitational lensing phenomenon in the weak field limits. Some exclusive instances are deliberated while calculating the deflection angle, beginning with the finite-distance corrections on non-asymptotically flat spacetimes. Effects of plasma medium is then inspected to observe its contribution to the deflection angle. Finally, the Jacobi metric is explored as an alternative method, only to arrive at similar results. All of the cases are probed in three constructs, one as a generic statement of explanation, one for black holes, and one for wormholes, so as to gain a perspective on every kind of influence.

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“…Then, Crisnejo and Gallo showed that the plasma medium deflects photons [41]. For more recent works, one can see [42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82].…”

Section: Introductionmentioning

confidence: 99%

Weak Deflection Angle by Asymptotically Flat Black Holes in Horndeski Theory Using Gauss-Bonnet Theorem

Javed

Abbas

Kumaran

et al. 2020

Preprint

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The principal objective of this project is to investigate the gravitational lensing by asymptotically flat black holes in the framework of Horndeski theory in weak field limits. To achieve this objective, we utilize the Gauss-Bonnet theorem to the optical geometry of asymptotically flat black holes and applying the Gibbons-Werner technique to achieve the deflection angle of photons in weak field limits. Subsequently, we manifest the influence of plasma medium on deflection of photons by asymptotically flat black holes in the context of Horndeski theory. We also examine the graphical impact of deflection angle on asymptotically flat black holes in the background of Horndeski theory in plasma as well as non-plasma medium.

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Deflection Angle of Photon from Magnetized Black Hole and Effect of Nonlinear Electrodynamics

Cited by 6 publications

References 27 publications

Effect of the quintessential dark energy on weak deflection angle by Kerr–Newmann Black hole

Effect of the quintessential dark energy on weak deflection angle by Kerr–Newmann Black hole

Deriving Weak Deflection Angle by Black Holes or Wormholes using Gauss-Bonnet Theorem

Weak Deflection Angle by Asymptotically Flat Black Holes in Horndeski Theory Using Gauss-Bonnet Theorem

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