Entropy of Vaidya-Bonner black hole
Vaidya-Bonner黑洞的熵

In this paper,starting from the null surface equation,we obtain the event horizon of Vaidya-Bonner black hole.Making use of Klein-Gordon equation,thin film brick-wall model and WKB approximation,we find the entropy of Vaidya-Bonner black hole and this entropy is proportional to the area of event horizon.