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|Type:||Artigo de periódico|
|Title:||Semianalytical approach for the Vaidya metric in double-null coordinates|
|Abstract:||We reexamine here a problem considered in detail before by Waugh and Lake: the solution of spherically symmetric Einstein's equations with a radial flow of unpolarized radiation (the Vaidya metric) in double-null coordinates. This problem is known to be not analytically solvable; the only known explicit solutions correspond to the constant mass case (Schwarzschild solution in Kruskal-Szekeres form) and the linear and exponential mass functions originally discovered by Waugh and Lake. We present here a semianalytical approach that can be used to discuss some qualitative and quantitative aspects of the Vaidya metric in double-null coordinates for generic mass functions. We present also a new analytical solution corresponding to (1/v)-mass function and discuss some physical examples.|
|Editor:||American Physical Soc|
|Citation:||Physical Review D. American Physical Soc, v. 70, n. 8, 2004.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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