Fronefield Crawford et al. 2000 The Astronomical Journal 119 2376 doi:10.1086/301329
A Search for Submillisecond Pulsations in Unidentified FIRST and NVSS Radio Sources
FREEFronefield Crawford1, Victoria M. Kaspi1,3 and Jon F. Bell2,4
Show affiliationsWe have searched 92 unidentified sources from the Faint Images of the Radio Sky at Twenty Centimeters (FIRST) and NRAO VLA Sky Survey (NVSS) 1400 MHz radio survey catalogs for radio pulsations at 610 MHz. The selected radio sources are bright, have no identification with extragalactic objects, are pointlike, and are more than 5% linearly polarized. Our search was sensitive to submillisecond pulsations from pulsars with dispersion measures less than ~500 pc cm-3 in the absence of scattering. We have detected no pulsations from these sources and consider possible effects that might prevent detection. We conclude that, as a population, these sources are unlikely to be pulsars.
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Issue 5 (2000 May)
Received 1999 June 22, accepted for publication 2000 January 25
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A Search for Submillisecond Pulsations in Unidentified FIRST and NVSS Radio Sources
Fronefield Crawford et al. 2000 The Astronomical Journal 119 2376
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