Critique

In the book “Black Holes and the Universe” (Cambridge University Press, 1990) I. Novikov describes the very black holes’ properties, which would make it possible to determine a black hole’s location. It seems clear that a black hole’s radiation, mass and binary structured existence make it easier to manage the searching puzzle. The author provides a great example, which concerns Cygnus X-1 (cf. page 61.) The star is supposed to be the first black hole, which nature is undoubted.

The most controversial point is Black Holes’ evaporation theory. The author presented the concept on a basis of vacuum theory (cf. page 66.) It certainly can be inferred that a black hole evaporates in an unimaginable periods of time. But the idea is not presented clear enough. The discrepancy regarding the fact, that a black hole attracts matter the whole life, remains unsolved. Black holes’ evaporation looks questionable because of an obvious difference between the currents of energy, which go toward and outward black hole’s center.