Physics
Scientific paper
Nov 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phrvl..49.1373k&link_type=abstract
Physical Review Letters, vol. 49, Nov. 8, 1982, p. 1373-1375. Research supported by the U.S. Department of Energy
Physics
81
Catalysis, Magnetic Monopoles, Neutron Stars, Nucleon-Nucleon Interactions, Radioactive Decay, Stellar Evolution, Cosmic Rays, Decay Rates, Galactic Radiation, Particle Flux Density, Stellar Models
Scientific paper
Observed limits on the X-ray luminosity of neutron stars are used to place an upper bound of 5 x 10 to the -49th per sec/sr on the product of the galactic flux of massive (10 to the 16th GeV) magnetic monopoles and the cross section for monopole-catalyzed nucleon decay. An analysis of monopole-induced nucleon decay in a neutron star of 1 solar mass at nuclar matter density with a radius of 10 km, a surface magnetic field of 1 TG, and an age of 10 Gy is performed on the assumption that cosmic-ray monopoles hitting the star at a velocity of 0.003c will be captured and will be efficient in catalyzing nucleon decay. It is concluded either that the upper limit on the cross section for monopole-induced nucleon decay is 4 x 10 to the -39th sq cm if the reported monopole flux limit of 6 x 10 to the -10th per sq cm/sec per sr is representative of the galactic flux of massive monopoles or that the upper limit on the galactic flux of massive monopoles is 5 x 10 to the -22nd per sq cm/sec per sr if the typical strong-interaction cross section of about 10 to the -27th sq cm is representative of monopole-catalyzed nucleon decay.
Colgate Sterling A.
Harvey Jeffrey A.
Kolb Edward W.
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