Millisecond pulsars

Details Millisecond pulsars Millisecond pulsars

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984japa....5..187b&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 5, Sept. 1984, p. 187-207.

Astronomy and Astrophysics

Astrophysics

13

Gravitational Waves, Pulsars, Stellar Rotation, Fast Fourier Transformations, Neutron Stars, Pulse Duration, Stellar Evolution

Scientific paper

In 1982 a pulsar was discovered with the phenomenal rotation rate of 642 Hz, 20 times faster than the spin rate of the Crab pulsar. The absence of supernova debris in the vicinity of the pulsar at any wavelength indicates an age of the neutron star greater than 105yr. The miniscule spindown rate of 1.1×10-19 confirms the old age and indicates a surface magnetic field of 109G. A second millisecond pulsar was discovered by Boriakoff et al. (1983) in a 120-day orbit. These fast pulsars may have been spun-up by mass transfer in a close binary evolutionary stage. Arrival-time observations of the 642-Hz pulsar display remarkably low residuals over the first 14 months. The stability implied by these observations, 3×10-14, suggests that millisecond pulsars will provide the most accurate basis for terrestrial dynamical time.

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