Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe.233c&link_type=abstract
Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:
Astronomy and Astrophysics
Astrophysics
Scientific paper
The statistical properties of submillisecond neutron stars are explored considering realistic physical models for the decay of the magnetic field confined in the crustal layers. Depending on the behaviour of nuclear matter at the crust-core boundary (complete expulsion of the magnetic field from the superconducting core or advection in a very highly conducting transition shell), the resulting tail of very fastly spinnng neutron stars has different distributions. It is found that neutron stars with period P < 1.56 ms and mu > 7 times 1025 Gcm^3 are present in a statistically significant number, and the distribution is only slightly affected by the boundary condition. Instead, if the Meissner effect is present, short period neutron stars are preferentially produced with very low field (mu < 7 times 1025 Gcm^3). We also analyze the statistical consequencies of a phase of spin down (due to propeller) at the end of the binary evolution.
Burderi Luciano
Colpi Monica
D'Amico Nichi
Possenti T. U. A.
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