TY - JOUR

T1 - Weak Deflection Angle and Greybody Bound of Magnetized Regular Black Hole

AU - Javed, Wajiha

AU - Riaz, Sibgha

AU - Övgün, Ali

N1 - Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2022/5

Y1 - 2022/5

N2 - In this paper, we examine the weak deflection angle and greybody bound for a magnetized regular black hole. For this purpose, we apply the Gauss–Bonnet theorem on the black hole and obtain the deflection angle in plasma and non-plasma mediums. Moreover, we investigate graphically the effect of impact parameter on the deflection angle for regular black hole in both mediums. We examine that the deflection angle goes to infinity when the impact parameter approaches zero. We also observe that the deflection angle shows negative behaviour at q = 0.6 and q = 2.09, but at 0.6 < q < 2.09, the angle shows positive behaviour. Furthermore, we study the rigorous bound phenomenon of the greybody factor in the background for a magnetized regular black hole. Later, we analyse the graphical behaviour of greybody bound with respect to different values of ω and observe that, at small values of ω, the bound increases, but for large values, the bound decreases. After that, we examine that, when we put G = 1, l = 0 and q = 0, all results for the magnetized regular black hole solution reduce into results of the Schwarzschild black hole solution.

AB - In this paper, we examine the weak deflection angle and greybody bound for a magnetized regular black hole. For this purpose, we apply the Gauss–Bonnet theorem on the black hole and obtain the deflection angle in plasma and non-plasma mediums. Moreover, we investigate graphically the effect of impact parameter on the deflection angle for regular black hole in both mediums. We examine that the deflection angle goes to infinity when the impact parameter approaches zero. We also observe that the deflection angle shows negative behaviour at q = 0.6 and q = 2.09, but at 0.6 < q < 2.09, the angle shows positive behaviour. Furthermore, we study the rigorous bound phenomenon of the greybody factor in the background for a magnetized regular black hole. Later, we analyse the graphical behaviour of greybody bound with respect to different values of ω and observe that, at small values of ω, the bound increases, but for large values, the bound decreases. After that, we examine that, when we put G = 1, l = 0 and q = 0, all results for the magnetized regular black hole solution reduce into results of the Schwarzschild black hole solution.

KW - Gauss–Bonnet theorem

KW - general relativity

KW - gravitational lensing

KW - greybody factory

KW - magnetized black holes

KW - plasma medium

UR - http://www.scopus.com/inward/record.url?scp=85129710637&partnerID=8YFLogxK

U2 - 10.3390/universe8050262

DO - 10.3390/universe8050262

M3 - Article

AN - SCOPUS:85129710637

SN - 2218-1997

VL - 8

JO - Universe

JF - Universe

IS - 5

M1 - 262

ER -