Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phrvd..25.2399l&link_type=abstract
Physical Review D (Particles and Fields), Volume 25, Issue 9, 1 May 1982, pp.2399-2405
Astronomy and Astrophysics
Astrophysics
17
Scientific paper
The existence of very massive magnetic monopoles is a necessary consequence of most unified theories of the strong, electromagnetic, and weak interactions. Estimates of their masses range from 1015 to 1017 that of a proton. Monopoles should have been produced in the "big bang" and survived to the present, either trapped in matter or in flight. By virtue of their huge mass, these monopoles might have eluded previous searches designed to detect monopoles with much smaller mass. I review the indirect limits which can be placed on monopoles because of the existence of large-scale galactic magnetic fields. I also review the experimental searches and reinterpret them to obtain limits for very massive monopoles. If the monopole masses are <~5×1014 GeV/c2, their concentration must be <~10-27 monopoles/nucleon from searches for monopoles trapped in meteorites. This limit is several orders of magnitude lower than the astrophysical limits.
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