Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.194..639c&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 194, Feb. 1981, p. 639-668. Research supported by the Lindemann Trust.
Astronomy and Astrophysics
Astronomy
20
Black Holes (Astronomy), Cosmology, Thermal Radiation, Universe, Eddington Approximation, Galactic Evolution, Stellar Mass Accretion
Scientific paper
Pregalactic black holes could have a large luminosity at early times due to accretion. Holes with mass exceeding about 1000 per epsilon-solar mass (where epsilon is the radiative 'efficiency' factor) would necessarily radiate at the Eddington limit for some period after decoupling, and large enough holes might do so until galaxy formation. The consequent radiation production could have an important effect on the thermal history of the universe, even if the density of the holes is small. The matter temperature would be boosted well above its Friedmann value and, the matter would be completely re-ionized. In some circumstances, the universe would never pass through a neutral phase at all. Black hole accretion before decoupling may conceivably have generated the 3 K background radiation, but only if the holes' luminosity exceeded the Eddington limit.
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