Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.215..659s&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 215, Aug. 15, 1985, p. 659-666.
Astronomy and Astrophysics
Astrophysics
Cosmology, Magnetic Monopoles, Particle Mass, Universe, Background Radiation, Black Holes (Astronomy), Decay, Flux Density, Isotropy, Limits, Missing Mass (Astrophysics), Photons
Scientific paper
The lifetime of monopolonium was used to put limits on the mass of the monopole. It was found that, in order to be in accord with observations of the energy density of the universe, the isotropy of the radiation backgrounds and the abundance of primordial light elements the mass of the monopolonium cannot be greater than 10 to the 16th GeV, so making very difficult to accommodate superheavy monopoles in the observable universe. Heavy monopolonium states will have a lifetime between 1000 and 10 trillion s, while light monopolonia are not restricted at all. Investigated is the possibility of identifying monopolonium with the heavy particle recently proposed to solve the Omega-problem, i.e., how to reconcile a universe with an Omega = 1 and a cold dark matter scenario capable of predicting the right large-scale structure of the universe. It is found that by choosing the radius of monopolonium, it is possible to solve the Omega-problem.
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