Charged black holes in KR gravity: Weak deflection angle,
shadow cast, quasinormal modes and neutrino annihilation

J 2025

Charged black holes in KR gravity: Weak deflection angle, shadow cast, quasinormal modes and neutrino annihilation

PANTIG, Reggie C; Ali OVGUN and Ángel Erasmo RINCÓN RIVERO

Basic information

Original name

Charged black holes in KR gravity: Weak deflection angle, shadow cast, quasinormal modes and neutrino annihilation

Authors

PANTIG, Reggie C; Ali OVGUN and Ángel Erasmo RINCÓN RIVERO

Edition

Physics of the Dark Universe, 2025, 2212-6864

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10308 Astronomy

Country of publisher

Netherlands

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 6.400 in 2024

Organization unit

Institute of physics in Opava

DOI

https://doi.org/10.1016/j.dark.2025.102029

UT WoS

001546580500001

EID Scopus

2-s2.0-105012539387

Keywords in English

Black holes;Lorentz symmetry breaking;Kalb-Ramond;Weak deflection angle;Neutrino annihilation;Quasinormal modes

Abstract

In the original language

In this paper, we investigate the phenomenology of electrically charged black holes in a Lorentz-violating gravitational framework mediated by a background Kalb-Ramond (KR) antisymmetric tensor field. Employing the Gauss-Bonnet theorem (GBT) in a non-asymptotically flat geometry, we derive analytic expressions for the weak deflection angle of light and massive particles, revealing persistent corrections due to the Lorentz-violating parameter 8. Scalar and Dirac perturbations are also studied using both the Wentzel-Kramers-Brillouin (WKB) approximation and the P & ouml;schl-Teller approximation approach to verify the stability of the solution against these types of perturbations. Shadow analysis further uncovers a nontrivial deformation of the photon sphere and critical impact parameter, with KR-induced effects modifying the charge contribution in a manner incompatible with standard Einstein-Maxwell theory. Constraints derived from the Event Horizon Telescope (EHT) data for Sgr A* and M87* validate the model and provide stringent bounds on 8, establishing the KR framework as an observationally testable extension of General Relativity (GR).

Cite

PANTIG, Reggie C; Ali OVGUN and Ángel Erasmo RINCÓN RIVERO. Charged black holes in KR gravity: Weak deflection angle, shadow cast, quasinormal modes and neutrino annihilation. Physics of the Dark Universe. 2025, vol. 49, September 25, p. "102029-1"-"102029-17", 17 pp. ISSN 2212-6864. Available from: https://doi.org/10.1016/j.dark.2025.102029.

@article{90301,
   author = {Pantig, Reggie C and Ovgun, Ali and Rincón Rivero, Ángel Erasmo},
   article_number = {September 25},
   doi = {https://doi.org/10.1016/j.dark.2025.102029},
   keywords = {Black holes;Lorentz symmetry breaking;Kalb-Ramond;Weak deflection angle;Neutrino annihilation;Quasinormal modes},
   language = {eng},
   issn = {2212-6864},
   journal = {Physics of the Dark Universe},
   title = {Charged black holes in KR gravity: Weak deflection angle, shadow cast, quasinormal modes and neutrino annihilation},
   url = {https://www.sciencedirect.com/science/article/pii/S2212686425002225?via%3Dihub},
   volume = {49},
   year = {2025}
}

TY  - JOUR
ID  - 90301
AU  - Pantig, Reggie C - Ovgun, Ali - Rincón Rivero, Ángel Erasmo
PY  - 2025
TI  - Charged black holes in KR gravity: Weak deflection angle, shadow cast, quasinormal modes and neutrino annihilation
JF  - Physics of the Dark Universe
VL  - 49
IS  - September 25
SP  - "102029-1"-"102029-17"
EP  - "102029-1"-"102029-17"
SN  - 22126864
KW  - Black holes;Lorentz symmetry breaking;Kalb-Ramond;Weak deflection angle;Neutrino annihilation;Quasinormal modes
UR  - https://www.sciencedirect.com/science/article/pii/S2212686425002225?via%3Dihub
N2  - In this paper, we investigate the phenomenology of electrically charged black holes in a Lorentz-violating gravitational framework mediated by a background Kalb-Ramond (KR) antisymmetric tensor field. Employing the Gauss-Bonnet theorem (GBT) in a non-asymptotically flat geometry, we derive analytic expressions for the weak deflection angle of light and massive particles, revealing persistent corrections due to the Lorentz-violating parameter 8. Scalar and Dirac perturbations are also studied using both the Wentzel-Kramers-Brillouin (WKB) approximation and the P & ouml;schl-Teller approximation approach to verify the stability of the solution against these types of perturbations. Shadow analysis further uncovers a nontrivial deformation of the photon sphere and critical impact parameter, with KR-induced effects modifying the charge contribution in a manner incompatible with standard Einstein-Maxwell theory. Constraints derived from the Event Horizon Telescope (EHT) data for Sgr A* and M87* validate the model and provide stringent bounds on 8, establishing the KR framework as an observationally testable extension of General Relativity (GR).
ER  -

PANTIG, Reggie C; Ali OVGUN and Ángel Erasmo RINCÓN RIVERO. Charged black holes in KR gravity: Weak deflection angle, shadow cast, quasinormal modes and neutrino annihilation. \textit{Physics of the Dark Universe}. 2025, vol.~49, September 25, p.~''102029-1''-''102029-17'', 17 pp. ISSN~2212-6864. Available from: https://doi.org/10.1016/j.dark.2025.102029.

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