The rotational history of a binary X-ray pulsar

Details The rotational history of a binary X-ray pulsar The rotational history of a binary X-ray pulsar

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....74..253w&link_type=abstract

Astronomy and Astrophysics, vol. 74, no. 3, May 1979, p. 253-262.

Astronomy and Astrophysics

Astrophysics

18

Binary Stars, Pulsars, Stellar Rotation, X Ray Stars, Neutron Stars, Spin Reduction, Stellar Magnetic Fields, Stellar Mass Accretion

Scientific paper

This paper shows that the neutron star in a binary X-ray system can be spun down from a period of the order of 1 sec in a time interval of the order of 1 million yr in a relatively weak stellar wind emanating from the OB companion star. It is proposed that many X-ray pulsars will become blanketed as they speed up, unless the captured material can form a Keplerian disk. The torques on the neutron star are reexamined as a function of mass capture rate. The high proportion of observed periodicities that are greater than 100 sec but rapidly decreasing is taken to suggest that most binary X-ray pulsars are short-lived (or have several short lives).

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