| We estimate the limiting density of dark matter near black holes |
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Two scientists from the National Autonomous University of Mexico showed that in excess of certain values of the density of dark matter in the halo of the galaxy begins the inexorable growth of the black hole at its center. The authors examined the evolution of virtual black hole for 10 billion years. As it turned out, the rate of absorption of dark matter hole strongly depends on the initial mass final and the matter density. Thus, for objects with a giant (the largest of the identified in observations) weight in 5 • 10 9 solar critical density, as follows from the figure, is 250 solar masses per cubic parsec. In case of further enhancing the initial mass limit is reduced. The growth of a black hole with initial mass M 0 = 5 10 9 solar at densities of dark matter in the 400, 350, 300, 250, 200, 150 and 100 solar masses per cubic parsec
"Uncontrolled growth of black holes, beginning at greater densities
would lead to a change in the whole population of galaxies observed by
us", - said one of the authors of Javier Hernandez (Xavier Hernandez).
It should be noted that the processing results of numerous observations
always given much more modest size - about one solar mass per cubic
parsec and below.
The findings also indicate that the dark matter in the central regions of galaxies should be distributed evenly. |
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