Discovery of two fast-rotating pulsars

Details Discovery of two fast-rotating pulsars Discovery of two fast-rotating pulsars

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...412l..37c&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 412, no. 1, p. L37-L40.

Astronomy and Astrophysics

Astronomy

56

Eccentric Orbits, Planetary Magnetic Fields, Pulsars, Sky Surveys (Astronomy), Binary Stars, Periodic Variations, Star Distribution

Scientific paper

Two fast-rotating pulsars have been discovered at high Galactic latitudes in the course of a systematic survey with the Arecibo telescope. PSR J2235 + 1506 has a period of 59.7 ms, a small magnetic field, and a spindown time scale in excess of 10 exp 9 yr. It is only the third such object known (outside of globular clusters) which is not a member of a binary system. PSR J2317 + 1439 is a 3.4 ms pulsar in a 2.46-d orbit with an approximately 0.2 solar mass companion. Its orbital eccentricity e = (1.2 +/- 0.8) x 10 exp -6 is, to our knowledge, the smallest known for an orbiting object of any kind. We briefly discuss some characteristics of the rapidly growing sample of 'field' millisecond pulsars.

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