Photon stars

Autor(en): Schmidt, HJ
Homann, F
Stichwörter: Astronomy & Astrophysics; black holes; numerical solutions of Einstein's field equations; Physics; Physics, Multidisciplinary; Physics, Particles & Fields; Tolman's equation
Erscheinungsdatum: 2000
Herausgeber: KLUWER ACADEMIC/PLENUM PUBL
Journal: GENERAL RELATIVITY AND GRAVITATION
Volumen: 32
Ausgabe: 5
Startseite: 919
Seitenende: 931
Zusammenfassung: 
We discuss numerical solutions of Einstein's field equation describing static, spherically symmetric conglomerations of a photon gas. These equations imply a back reaction of the metric on the energy density of the photon gas according to Tolman's equation. The 3-fold of solutions corresponds to a class of physically different solutions which is parameterized by only two quantities, i.e. mass and surface temperature. The energy density is typically concentrated on a shell because the center contains a repelling singularity, which can, however, not be reached by timelike geodesics and only by radial null geodesics. The physical relevance-of these solutions is completely open, although their existence may raise some doubts w.r.t. the stability of black holes.
ISSN: 00017701
DOI: 10.1023/A:1001989125318

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