Holonomy corrected Schwarzschild black hole lensing

Soares, A. R.; Pereira, C. F. S.; Vitória, R. L. L.; Rocha, Erick Melo

doi:10.1103/physrevd.108.124024

Cited by 15 publications

(1 citation statement)

References 73 publications

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“…Moreover, he extended the method to the situation of rotation [75] and studied the time delay [76] between different relativistic images formed by the gravitational lensing of black holes in the strong deflection limit. Since then, this method has been widely used in the studies of strong deflection of light [77][78][79][80][81][82][83][84][85][86][87][88] and time delay [89][90][91][92][93]. When the distance between the photons and the black hole is large, the gravitational lensing effect of the black hole should be depicted by the weak deflection limit.…”

Section: Introductionmentioning

confidence: 99%

Gravitational lensing by a stable rotating regular black hole

Xie,

Zhang,

Sun

et al. 2024

J. Cosmol. Astropart. Phys.

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Recent observational data from the Event Horizon Telescope (EHT) collaboration provide convincing realistic evidence for the existence of black hole rotation. From a phenomenological perspective, a recently proposed stable rotating regular (SRR) black hole circumvents the theoretical flaws of the Kerr solution. For the purpose of obtaining observational signatures of this black hole, we study its gravitational lensing effect. In the strong deflection limit, we calculate the deflection angle of light on the equatorial plane, the radius of the photon sphere, and other observables. The observables include the relativistic image position, separation, magnification, and time delays between different images. Then, by modeling M87* and Sgr A* as the SRR black hole, we compute their observables and evaluate the deviation of the observables from the Kerr case. In the weak deflection limit, we calculate the light deflection angle on the equatorial plane of M87* and Sgr A* via the Gauss-Bonnet theorem (GBT). With the growth of deviation parameter e, the gravitational lensing effect in the weak deflection limit intensifies monotonically, and the gravitational lensing effect in the strong deflection limit changes dramatically only at high spins. Our research may contribute to distinguish between SRR black holes from Kerr black holes under higher-precision astronomical observations.

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Section: Introductionmentioning

confidence: 99%

Gravitational lensing by a stable rotating regular black hole

Xie,

Zhang,

Sun

et al. 2024

J. Cosmol. Astropart. Phys.

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An effective model for the quantum Schwarzschild black hole: Weak deflection angle, quasinormal modes and bounding of greybody factor

Rincón,

Övgün,

Pantig

2024

Physics of the Dark Universe

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Gravitational lensing of spherically symmetric black holes in dark matter halos

Liu,

Qiao,

Tao

2024

J. Cosmol. Astropart. Phys.

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The gravitational lensing of supermassive black holes surrounded by dark matter halo has attracted a great number of interests in recent years. However, many studies employed simplified dark matter density models, which makes it very hard to give a precise prediction on the dark matter effects in real astrophysical galaxies. In this work, to more accurately describe the distribution of dark matter in real astrophysical galaxies, we study the gravitational lensing of black holes in astrophysical dark matter halo models (Beta, Burkert, Brownstein, and Moore). The deflection angle is obtained using a generalized Gibbons-Werner approach. The visual angular positions and the Einstein rings are also calculated by adopting the gravitational lens equation. Specifically, we choose the supermassive black holes in Milky Way Galaxy, Andromeda galaxy (M31), Virgo galaxy (M87), and ESO138-G014 galaxy as examples, including the corresponding fitted value of dark matter halos. The results suggest that the dark matter halo described by the Beta model has non-negligible influences on the gravitational deflection angle and gravitational lensing observations. However, the Burkert, Brownstein, and Moore models have relatively small influences on angular position of images and the Einstein ring.

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Holonomy corrected Schwarzschild black hole lensing

Cited by 15 publications

References 73 publications

Gravitational lensing by a stable rotating regular black hole

Gravitational lensing by a stable rotating regular black hole

An effective model for the quantum Schwarzschild black hole: Weak deflection angle, quasinormal modes and bounding of greybody factor

Gravitational lensing of spherically symmetric black holes in dark matter halos

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