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Feinman, R.F., Morinigo, F.B. and Wagner, W.G. (1959) Feinman Lectures on Gravitation. Addison-Wesley Publishing Company, Boston.

has been cited by the following article:

  • TITLE: Black Holes or Dark Stars—What Follows from the General Relativity Theory

    AUTHORS: Valery V. Vasiliev

    KEYWORDS: General Relativity, Spherically Symmetric Problem, Black Holes, Dark Stars

    JOURNAL NAME: Journal of Modern Physics, Vol.8 No.7, June 16, 2017

    ABSTRACT: The paper is concerned with spherically symmetric static problem of the Classical Gravitation Theory (CGT) and the General Relativity Theory (GRT). First, the Dark Stars, i.e. the objects that are invisible because of high gravitation preventing the propagation of light discovered in the 18th century by J. Michel and P. Laplace are discussed. Second, the Schwarzchild solution which was obtained in the beginning of the 20th century for the internal and external spaces of the perfect fluid sphere is analyzed. This solution results in singular metric coefficients and provides the basis of the Black Holes. Third, the general metric form in spherical coordinates is introduced and the solution of GRT problem is obtained under the assumption that gravitation does not affect the sphere mass. The critical sphere radius similar to the Black Hole horizon of events is found. In contrast to the Schwarzchild solution, the radial metric coefficient for the sphere with the critical radius referred to as the Dark Star is not singular. For the sphere with radius which is less than the critical value, the GRT solution becomes imaginary. The problem is discussed within the framework of the phenomenological theory which does not take into account the actual microstructure of the gravitating objects and, though the term “star” is used, the analysis is concerned with a model fluid sphere rather than with a real astrophysical object.