| Issue |
EPL
Volume 152, Number 1, October 2025
|
|
|---|---|---|
| Article Number | 19003 | |
| Number of page(s) | 5 | |
| Section | Gravitation, cosmology and astrophysics | |
| DOI | https://doi.org/10.1209/0295-5075/ae0af2 | |
| Published online | 10 October 2025 | |
Thermal radiation from a Vaidya-Bardeen black hole
Department of Physics, Jimei University - 361021, Xiamen, Fujian province, PRC
Received: 19 June 2025
Accepted: 24 September 2025
Abstract
In this work, the conformal flatness method is utilized to discuss the thermal radiation from the Vaidya-Bardeen black hole. When the black hole mass decreases to its minimum, the result is self-consistent: the horizon ceases to shrink and the temperature vanishes naturally. The rate of change in the radius of horizon has a maximum value of the order of 
, where q is the magnetic charge. These conclusions are similar to the Vaidya-Hayward black hole, despite the different curvatures of their de Sitter cores. Using the numerical fitting method, we obtain an approximate expression connecting the Kretschmann scalar with the black hole's evaporation rate.
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