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arXiv · 1612.06009

Source with Nonzero Radial Pressure for the Vaidya Metric

Hristu Culetu
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Abstract

A null fluid with radial pressure is proposed as the 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 $\rho$ is the energy density. The radial energy flux is inward directed when $\dot{m} > 0$ and the total energy flow crossing a surface of constant $r$ resembles the Brown-York quasilocal energy. 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.

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Hristu Culetu. 2016-12-18. Source with Nonzero Radial Pressure for the Vaidya Metric. https://arxiv.org/abs/1612.06009

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