Vaidya Metric
Encyclopedia
The Vaidya metric describes exterior gravitational field
Gravitational field
The gravitational field is a model used in physics to explain the existence of gravity. In its original concept, gravity was a force between point masses...

 due to a radiating star. The metric was proposed by P. C. Vaidya
P. C. Vaidya
Prahalad Chunnilal Vaidya , was an Indian physicist and mathematician, renowned for his instrumental work in general theory of relativity...

 in 1943. It is a non-static generalization of the Schwarzschild metric
Schwarzschild metric
In Einstein's theory of general relativity, the Schwarzschild solution describes the gravitational field outside a spherical, uncharged, non-rotating mass such as a star, planet, or black hole. It is also a good approximation to the gravitational field of a slowly rotating body like the Earth or...

.



where M(u) is the mass parameter.
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