Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990natur.347..741r&link_type=abstract
Nature (ISSN 0028-0836), vol. 347, Oct. 25, 1990, p. 741-743. Research supported by NSF and Corning Glass Works.
Astronomy and Astrophysics
Astrophysics
143
Neutron Stars, Stellar Magnetic Fields, Stellar Models, Magnetic Field Configurations, Pulsars, Stellar Evolution, X Ray Binaries
Scientific paper
Strongly magnetized neutron stars are believed to be at the heart of a number of astrophysical systems, notably pulsars and X-ray binaries. Although the magnetic field is an important determinant in the behavior of such systems, the origin and stability of the field are the subject of conflicting observational and theoretical evidence. A new model of neutron-star magnetic moments is described, by which the fields are generated as the neutron star is born, and the evolution of the field is followed over a Hubble time. With realistic thermal evolution and conductivities, isolated neutron stars will maintain large magnetic fields for more than 10-billion years. In addition, it is shown how mass accretion onto neutron stars can reduce the field strength. This model of field generation and decay can explain a wide variety of observed systems.
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