Detection of black holes from optical phenomena

Details Detection of black holes from optical phenomena Detection of black holes from optical phenomena

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.237..653c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 237, April 1, 1989, p. 653-659.

Astronomy and Astrophysics

Astronomy

1

Black Holes (Astronomy), Light Beams, Brightness Distribution, Galaxies, Planetary Nebulae

Scientific paper

The way by which the bending of light rays around black holes could give rise to optical phenomena is examined. The phenomena include the fact that a ring of brightness around the black hole would be seen when light is flashed onto the hole and the appearance of a nebulosity around the black hole coming from the scattering of light from all discrete sources of the sky when it passes near the black hole. It is found that primordial black holes of mass of about 10 to the 16th solar masses (Zel'dovich and Novikov 1967) would be detectable by the first phenomenon if they existed within 5 Mpc distance from earth, while they would be detectable by the second phenomenon if they existed within 200-300 Mpc distance from earth.

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