Journal
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
Volume 64, Issue 6, Pages -Publisher
SCIENCE PRESS
DOI: 10.1007/s11433-020-1659-0
Keywords
weak cosmic censorship conjecture; black hole thermodynamics; Taub-NUT black hole
Categories
Funding
- National Natural Science Foundation of China [11875151, 11522541]
- Fundamental Research Funds for the Central Universities [lzujbky2019-it21, lzujbky-2019-ct06]
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Research suggests that overcharging a charged Taub-NUT regular black hole is possible through the scattering of a charged field and absorption of a charged particle. Both near-extremal and extremal black holes cannot be overcharged through charged scalar field scattering. While the event horizon of a near-extremal charged Taub-NUT regular black hole may be destroyed by absorption of a charged particle, it may not be overcharged if charge and energy cross the event horizon in a continuous path.
The destruction of a regular black hole event horizon might provide us the possibility to access regions inside black hole event horizon. This paper investigates the possibility of overcharging a charged Taub-NUT regular black hole via the scattering of a charged field and the absorption of a charged particle. For the charged scalar field scattering, both the near-extremal and extremal charged Taub-NUT regular black holes cannot be overcharged. For the test charged particle absorption, the result shows that the event horizon of the extremal charged Taub-NUT regular black hole still exists while the event horizon of the near-extremal one can be destroyed. However, if the charge and energy cross the event horizon in a continuous path, the near-extremal charged Taub-NUT regular black hole might not be overcharged.
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