Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985azh....62.1107g&link_type=abstract
(Astronomicheskii Zhurnal, vol. 62, Nov.-Dec. 1985, p. 1107-1115) Soviet Astronomy (ISSN 0038-5301), vol. 29, Nov.-Dec. 1985, p.
Astronomy and Astrophysics
Astronomy
3
Binary Stars, Eccentric Orbits, Pulsars, Stellar Evolution, Stellar Mass Accretion, X Ray Stars, Light Curve, Milky Way Galaxy, Neutron Stars, Novae, Radiant Flux Density, Stellar Models, Stellar Winds
Scientific paper
For the first time, the evolution of neutron stars in an eccentric orbit is considered. It is shown that a special class of systems exists, in which the steady-state accretion is in principle unattainable, the neutron star passing permanently from the state of accretion to that of the propeller and vice versa. It is possible that the fastest accreting pulsar A 0538-66 is a member of such a system. A number of observational test is suggested which can prove that a) the system is in an equilibrium state, and b) a sharp luminosity increase is connected with the overcoming of the centrifugal barrier. An idea is put forward, that during the subsequent evolution of the optical star, the supercritical accretion onto the neutron star will begin. It follows therefrom that a nova-like source of the SS 433 type must exist in the Galaxy.
Gnusareva V. S.
Lipunov Vladimir M.
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