Arecibo timing observations of 17 pulsars along the Galactic plane

摘要

We present phase-coherent timing solutions obtained for the first time for 17 pulsars discovered at Arecibo by Hulse Taylor in a 430 MHz survey of the Galactic plane. This survey remains the most sensitive of the Galactic plane at 430 MHz and has comparable equivalent sensitivity to the 1400 MHz Parkes multibeam survey. Comparing both surveys we find that, as expected, the one at 430 MHz is limited in depth by interstellar dispersion and scattering effects and that the detection rate of pulsars with high spin-down luminosity ((E)over dot > 10(34) ergs s(-1)) at the low frequency is a factor of 5 smaller than at high frequency. We also present scatter-broadening measurements for two pulsars and pulse-nulling and mode-changing properties for two others. References: 30