Recai Erdem, Betül Demirkaya, Kemal Gültekin

A metric for gravitational collapse around a Schwarzschild black hole

  • General Physics and Astronomy
  • Astronomy and Astrophysics
  • Nuclear and High Energy Physics
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We consider the problem of gravitational collapse of a fluid under the effect of a small Schwarzschild black hole (e.g. a primordial one). We assume the fluid initially may be approximated by a uniform homogeneous dust. Starting from this configuration we obtain a class of metrics under some physically justified assumptions. We find that the metric we obtain includes the dust collapse as a subcase. After discussing some basic properties of the solution, we discuss the case of dust collapse in more detail. We find that the radial and tangential pressures outside the horizon may take positive or negative values depending on the values of the parameters.

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