Scalar waves in regular Bardeen black holes: Scattering, absorption and quasinormal modes

Macedo, Caio F. B.; Crispino, Luís C. B.; Oliveira, Érika Arantes de

doi:10.1142/s021827181641008x

Cited by 22 publications

(11 citation statements)

References 43 publications

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“…In [44] the thermodynamic similarity between the noncommutative Schwarzschild black hole and the Reissner-Nordström black hole has been investigated. Other types of black holes that have similarities to the Reissner-Nordström black hole have been investigated in [45] and [46] by calculating the total absorption cross section and the differential scattering cross section.…”

Section: Introductionmentioning

confidence: 99%

Absorption and scattering of a noncommutative black hole

et al. 2020

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In this paper we aim to investigate the process of massless scalar wave scattering due to a self-dual black hole through the partial wave method. We calculate the phase shift analytically at the low energy limit and we show that the dominant term of the differential cross section at the small angle limit is modified by the presence of parameters related to the polymeric function and minimum area of a self-dual black hole. We also find that the result for the absorption cross section is given by the event horizon area of the self-dual black hole at the low frequency limit. We also show that, contrarily to the case of a Schwarzschild black hole, the differential scattering/absorption cross section of a self-dual black hole is nonzero at the zero mass limit. In addition, we verify these results by numerically solving the radial equation for arbitrary frequencies.

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Section: Introductionmentioning

confidence: 99%

Absorption and scattering of a noncommutative black hole

et al. 2020

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“…Using the inner product (23), we obtain the overall normalization constants in Eqs. (20) and (21), namely…”

Section: Scalar Radiation and Emitted Powermentioning

confidence: 99%

“…Regarding regular BHs, absorption and scattering of scalar waves by Bardeen BHs were studied in Refs. [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Scalar radiation from a source rotating around a regular black hole

Bernar

Crispino

2019

Phys. Rev. D

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The scalar radiation emitted by a source in geodesic circular orbit around a regular Bardeen black hole is analyzed. We use the quantum field theory in curved spacetime framework to obtain the emitted power of radiation by computing the one-particle emission amplitude of scalar particles in the curved background. We compare our results to a similar setting in the spacetime of a Reissner-Nordström black hole.

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“…Even more, such frequencies depend on i) the geometry and ii) the type of perturbations [25]. Along the years, the study of QNM becomes more essential than ever, and certain seminal works have been performed up to now, for instance see [26][27][28] and more recent works [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Greybody factor and quasinormal modes of Regular Black Holes

Rincón

Santos

2020

Eur. Phys. J. C

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In this work, we investigate the quasinormal frequencies of a class of regular black hole solutions which generalize Bardeen and Hayward spacetimes. In particular, we analyze scalar, vector and gravitational perturbations of the black hole with the semianalytic WKB method. We analyze in detail the behaviour of the spectrum depending on the parameter p/q of the black hole, the quantum number of angular momentum and the s number. In addition, we compare our results with the classical solution valid for $$p = q = 1$$ p = q = 1 .

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Scalar waves in regular Bardeen black holes: Scattering, absorption and quasinormal modes

Cited by 22 publications

References 43 publications

Absorption and scattering of a noncommutative black hole

Absorption and scattering of a noncommutative black hole

Scalar radiation from a source rotating around a regular black hole

Greybody factor and quasinormal modes of Regular Black Holes

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