Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ans..conf..285k&link_type=abstract
In Max-Planck Inst. Phys. and Astrophys. Accreting Neutron Stars p 285-287 (SEE N83-15179 05-88)
Astronomy and Astrophysics
Astrophysics
1
Companion Stars, Stellar Evolution, Alternatives, Pulsars, Stellar Mass Accretion, Stellar Rotation, Stellar Winds, X Ray Sources
Scientific paper
The following alternatives for the evolution of neutron star binaries are considered. After an initial short-lived pulsar-stage, the neutron star is engulfed by wind plasma from its companion star; or it ejects the impinging plasma in the shape of a narrow beam, like a grindstone. After sufficient spindown, the neutron star turns into an X-ray source whereby Matter is not always stored in an accretion disk (wind accretion); or an accretion disk exists around all known X-ray pulsars. The inner edge of the accretion disk is located very near the corotation radius; or it is located deep inside the corotation radius. When the second star expands and pushes a significant fraction of its mass towards its neutron star companion, this mass forms a common envelope; or it forms a massive disk around the neutron star. The alternatives are considered with the assumptions that most neutron stars are born in massive binary systems and that neutron stars are fast rotators.
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