Primordial Black Hole

A primordial black hole is a hypothetical type of black hole that is formed not by the gravitational collapse of a large star but by the extreme density of matter present during the universe's early expansion.

According to the Big Bang Model, during the first few moments after the Big Bang, pressure and temperature were extremely great. Under these conditions, simple fluctuations in the density of matter may have resulted in local regions dense enough to create black holes. Although most regions of high density would be quickly dispersed by the expansion of the universe, a primordial black hole would be stable, persisting to the present.

It has been proposed that primordial black holes, specifically those forming in the mass range of 1014 kg to 1023 kg, could be a candidate for dark matter. This is due to the possibility that at this low mass they would behave as expected of other particle candidates for dark matter. Being within the typical mass range of asteroids, this excludes those black holes too small to persist until our era and those too large to explain gravitational lensing observations.

Read more about Primordial Black Hole:  Possible Detection, Implications, String Theory

Famous quotes containing the words primordial, black and/or hole:

    The image cannot be dispossessed of a primordial freshness, which idea can never claim. An idea is derivative and tamed. The image is in the natural or wild state, and it has to be discovered there, not put there, obeying its own law and none of ours. We think we can lay hold of image and take it captive, but the docile captive is not the real image but only the idea, which is the image with its character beaten out of it.
    John Crowe Ransom (1888–1974)

    I think what everybody calls a miracle is just common sense.... You can look at the attitudes when people come in. That’s why they call it a miracle. These are black kids and they’re not supposed to know the things they know and achieve the way they are achieving.
    Marva Nettles Collins (b. 1936)

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