Astrophysical bounds on global monopoles

Details Astrophysical bounds on global monopoles Astrophysical bounds on global monopoles

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990phrvl..64..344h&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 64, Jan. 22, 1990, p. 344-347.

Astronomy and Astrophysics

Astrophysics

22

Astrophysics, Gravitational Fields, Monopoles, Universe, Grand Unified Theory, Gravitational Effects, Space Density

Scientific paper

The gravitational field of a global monopole is used to constrain the number density of global monopoles present in the universe today. Requiring that the mass density in such monopoles should not greatly exceed the critical density implies that there is at most one global monopole in the local group of galaxies. Equally stringent bounds are also derived which do not depend on cosmological assumptions, using the large tidal gravitational forces associated with such monopoles.

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