A survey for short-period pulsars

Physics

Scientific paper

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Flux Density, Periodic Variations, Pulsars, Star Distribution, Calibrating, Stellar Oscillations

Scientific paper

An extensive new survey of pulsars sensitive to pulsar periods as short as 4 ms has been carried out. The search covered about 3725 sq deg, mostly at Galactic latitudes less than 15 deg and longitudes between 15 and 230 deg, with a sensitivity of 2-100 mJy depending on period, dispersion measure, and sky background temperature. A total of 87 pulsars were detected, including 20 new ones, but none with period less than 100 ms were found. It is concluded that the Galaxy does not contain a large population of pulsars with periods between 4 and 100 ns, unless their radio luminosities are substantially less than those of slower pulsars.

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