Abstract
We extend Vaidya’s algorithm for the description of a central mass losing or gaining energy due to electromagnetic-type radiation (‘null dust’) to the case of arbitrary radial corpuscular radiation. We also demonstrate the remarkable possibility of purely algebraic deduction of the Vaidya solution without integrating the field equations, and interpret this possibility as an artifact of curvature coordinates. Since Vaidya’s approach by itself cannot lead to certain dependence of mass on spacetime coordinates, the search for a corresponding mass-function represents an independent issue. In this regard, as a perspective, we discuss an outlook on the problem of variable masses as a whole.
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The work is partially supported within the Grant No. AP08052312 of the Ministry of Education and Science of the Republic of Kazakhstan.
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Mychelkin, E.G., Makukov, M.A. Coordinate effect: Vaidya solutions without integrating the field equations. Gen Relativ Gravit 52, 113 (2020). https://doi.org/10.1007/s10714-020-02767-y
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DOI: https://doi.org/10.1007/s10714-020-02767-y