Black holes from cosmic strings

Details Black holes from cosmic strings Black holes from cosmic strings

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phlb..231..237h&link_type=abstract

Physics Letters B, Volume 231, Issue 3, p. 237-239.

Physics

75

Scientific paper

Cosmic string loops that shrink by a factor of order 1/Gμ will form black holes. I estimate that a fraction of order (Gμ)2x-4 of loops will form black holes, where x=L/s, and s is the correlation length of the string. Although this fraction is very low, the emission of γ-rays from these little black holes could be significant. Observations of the γ-ray background indicate the Gμ must be less than 10-7 if x=3, or that x must be less than 3.5 if Gμ=10-6.

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