科研之友
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摘要
A null fluid with radial "pressure" is proposed as a source generating Vaidya spacetime. The fluid is anisotropic with no transversal pressures and p = rho/3 as its equation of state, where p is the isotropic pressure and. is the energy density. The radial energy flux is directed inward when (m) over dot > 0 and the total energy flow crossing a surface of constant r resembles the Brown-York quasilocal energy (QLE). A modified Vaidya metric removes the singularity at the origin, and the corresponding QLE is investigated in terms of both r and the mass m(v) of the object.
- 出版日期2018-1-15
