Erratum: Shadow and quasinormal modes of a rotating loop quantum black hole [Phys. Rev. D 
<b>101</b>
, 084001 (2020)]

Liu, Cheng; Zhu, Tao; Wu, Qiang; Jusufi, Kimet; Jamil, Mubasher; Azreg‐Aïnou, Mustapha; Wang, Anzhong

doi:10.1103/physrevd.103.089902

Cited by 33 publications

(28 citation statements)

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“…Recently, the author of this paper, showed a connection between the shadow radius and the real part of the QNMs in a static and a spherically symmetric black hole spacetime (see [49]) and rotating spacetimes (see, [50]). This correspondence was used in subsequent studies [51][52][53], along with the analytical correspondence reported in [54] also used in [55]. In the present work, we aim to show that such a correspondence between the real part of the QNMs and the shadow radius exists in the spacetime of static/rotating and asymptotically flat wormholes.…”

Section: Introductionmentioning

confidence: 79%

Correspondence between quasinormal modes and the shadow radius in a wormhole spacetime

Jusufi

2020

Preprint

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In this paper we study the correspondence between the real part of quasinormal modes (QNMs) and the shadow radius in a wormhole spacetime. Firstly we consider the above correspondence in a static and spherically symmetric wormhole spacetime and then explore this correspondence numerically by considering different wormhole models having specific redshift functions. To this end, we generalize this correspondence to the rotation wormhole spacetime and calculate the typical shadow radius of the rotating wormhole when viewed from the equatorial plane. We argue that due to the rotation and depending on the specific model, the typical shadow radius can increase or decrease and a reflecting point exists. Finally, we discuss whether a wormhole can mimic the black hole due to it's shadow. In the light of the EHT data, we find the upper and lower limits of the wormhole throat radius in the galactic center M87.

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Section: Introductionmentioning

confidence: 79%

Correspondence between quasinormal modes and the shadow radius in a wormhole spacetime

Jusufi

2020

Preprint

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“…In this respect, one can directly consider a particular mode, by fixing the multiple l and the overtone n, and compare their mode frequencies with those in GR. This turns out to be the most straightforward way of exhibiting how the QNMs would be altered when going beyond GR, and has been widely investigated in the literature [14,15,[32][33][34][35][36][37][38][39][40][41][42][43][44][45].…”

Section: A Qnm Spectrummentioning

confidence: 99%

Lessons from black hole quasinormal modes in modified gravity

Chen,

Bouhmadi-López,

Chen

2021

Preprint

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Quasinormal modes (QNMs) of perturbed black holes have recently gained much interest because of their tight relations with the gravitational wave signals emitted during the post-merger phase of a binary black hole coalescence. One of the intriguing features of these modes is that they respect the no-hair theorem, hence they can be used to test black hole spacetimes and the underlying gravitational theory. In this paper, we exhibit three different aspects of how black hole QNMs could be altered in theories beyond Einstein's general relativity (GR). These aspects are i) the direct alterations of QNM spectra as compared with those in GR, ii) the violation of the geometric correspondence between the high-frequency QNMs and the photon geodesics around the black hole, and iii) the breaking of the isospectrality between the axial and polar gravitational perturbations. Several examples will be provided in each individual case. The prospects and possible challenges associated with future observations will be also discussed.

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“…Also, considering gravitational perturbations the analyses have been made in [10,11], where the results showed for the first time in the context of BHs in LQG, a breaking of the isospectrality. Still, in the context of LQG, it is made an analysis of the QNMs for a rotating black hole solution in [12].…”

Section: Introductionmentioning

confidence: 99%

Quasinormal modes of a massive scalar field nonminimally coupled to gravity in the spacetime of Self-Dual Black Hole

Santos,

Cruz,

Brito

2021

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In this work, we investigate the quasinormal modes for a massive scalar field with a nonminimal coupling with gravity in the spacetime of a loop quantum black hole, known as the Self-Dual Black Hole. In this way, we have calculated the characteristic frequencies using the WKB approach, where we can verify a strong dependence on the mass of scalar field, the parameter of nonminimal coupling with gravity, and the parameters of the Loop Quantum Gravity. From our results, we can check that the Self-Dual Black Hole is stable under the scalar perturbations when assuming small values for the parameters. Also, such results tell us that the quasinormal modes assume different values for the cases where the mass of field is null and the nonminimal coupling assumes ξ = 0 and ξ = 1/6, i.e., a possible breaking of the conformal invariance can be seen in the context of Self-Dual Black Hole.

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Erratum: Shadow and quasinormal modes of a rotating loop quantum black hole [Phys. Rev. D 101 , 084001 (2020)]

Cited by 33 publications

References 0 publications

Correspondence between quasinormal modes and the shadow radius in a wormhole spacetime

Correspondence between quasinormal modes and the shadow radius in a wormhole spacetime

Lessons from black hole quasinormal modes in modified gravity

Quasinormal modes of a massive scalar field nonminimally coupled to gravity in the spacetime of Self-Dual Black Hole

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