Other
Scientific paper
May 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ngbh.procr....s&link_type=abstract
International School of Cosmology and Gravitation, Course on the Nuclei of Galaxies, Black Holes, and Collapsed Matter, 3rd, Eri
Other
Gravitational Collapse, Neutron Stars, Stellar Evolution, Thermonuclear Reactions, White Dwarf Stars, Binary Stars, Critical Mass, Electron Capture, Equations Of State, Pulsars, Stellar Mass, Stellar Structure
Scientific paper
The study concerns mechanisms which can explain the number of neutron stars known to exist in pulsars and X-ray sources. If the accreting star in an X-ray binary is a neutron star, it should be formed in a nonexplosive manner. The conditions of dissociation of a double star are discussed for the case in which explosive processes occur in one star. Upper bounds are found for the ratio of the final to the initial mass of the exploded star, depending on the mass of its companion. The equations of state and equilibrium of white dwarfs are examined. The different effects of slow accretion, fast accretion, and accretion near the instability limit are traced. Two nuclear processes, inverse beta capture and thermonuclear reactions, have an influence on whether the evolution of white dwarfs is explosive or nonexplosive. The star must be a carbon white dwarf for nonexplosive collapse to occur. Several other conditions for such collapse are indicated.
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