The Orbit and Spin-down of the 34 ms Binary Pulsar SAX J0635+0533

Details The Orbit and Spin-down of the 34 ms Binary Pulsar SAX J0635+0533 The Orbit and Spin-down of the 34 ms Binary Pulsar SAX J0635+0533

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.3312k&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #33.12; Bulletin of the American Astronomical Society, Vol. 32, p.1242

Astronomy and Astrophysics

Astronomy

Scientific paper

Modulations detected in the observed spin period of the 34 ms x-ray pulsar SAX J0635+0533 have allowed us to measure the orbital parameters of the system. Combination of observations spanning two years place a lower bound on the intrinsic period derivative of the pulsar of 3.8 x 10-13. The period derivative implies a high torque on the neutron star which would require a very high mass accretion rate, in excess of 6 x 10-7 Msun yr-1, if produced via accretion. The torque and x-ray luminosity are both within the range typical of young, rotation-powered pulsars. We suggest that SAX J0635+0533 is a very young, less than 1400 year old, rotation-powered pulsar in a binary system.

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