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The brightness of a black hole due to gravitational lensing

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Abstract

The influence of a Schwarzschild black hole on the light from stars is examined. The result is, that due to gravitational lensing light comes from the black hole and thus a black hole ‘shines’. The effect is very small and numerical calculations suggest that the magnitude of the black hole is smaller than 60m, this means unobservable with present instruments. It is also shown that there is no effect on the cosmic background radiation.

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Authors and Affiliations

  1. Universität Erlangen-Nürnberg, Erlangen, F.R.G.

    Ralph P. Lano

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  1. Ralph P. Lano
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Lano, R.P. The brightness of a black hole due to gravitational lensing. Astrophys Space Sci 159, 125–132 (1989). https://doi.org/10.1007/BF00640494

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  • DOI: https://doi.org/10.1007/BF00640494

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