Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993stin...9432503c&link_type=abstract
Presented at the 4th Maryland Conference on Astrophysics, College Park, MD, 11-13 Oct. 1993
Astronomy and Astrophysics
Astrophysics
B Stars, Binary Stars, Main Sequence Stars, Pulsars, Stellar Rotation, Stellar Winds, X Ray Binaries, Center Of Mass, Emission Spectra, X Ray Sources, X Rays
Scientific paper
The PSR 1259-63 system is unique in that it is the first radio pulsar found to be in a binary system with a massive main sequence companion. As such, it may be the evolutionary missing link connecting the radio pulsars to the X-ray emitting Be binaries. In this paper, we consider the conditions under which PSR 1259-63 may be the progenitor of the less eccentric, more slowly rotating X-ray Be binaries such as 4U0115+63, A0535+26, and A0538-66. Scenarios invoking the interaction of the pulsar with the stellar wind of the companion are proposed to account for the rapid spin-down phase that must occur in this system if it is evolutionarily linked to accreting X-ray binaries. The unexpected X-ray emission observed from PSR 1259-63 may indicate that the interaction between the pulsar and the Be star occurs at greater distances and produces a greater spin-down efficiency than was previously calculated.
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