2002ApJ...564..333M

We discuss PSR J1740+1000, one of five pulsars recently discovered in a search of 470 deg² at 430 MHz during the upgrade of the 305 m Arecibo Telescope. The period P=154 ms and period derivative P{dot}=2.1x10^–14 s. s^–1 imply a spin-down age τ_s=P/2P{dot}=114 kyr that is smaller than 95% of all known pulsars. The youth and proximity of this pulsar make it a good candidate for detection at X-ray and gamma-ray energies. Its high Galactic latitude (b=20°.4) suggests a very high velocity if the pulsar was born in the midplane of the Galaxy and if its kinematic age equals its spin-down age. Interstellar scintillations, however, suggest a much lower velocity. We discuss possible explanations for this discrepancy, taking into account (1) possible birth sites away from the midplane; (2) contributions from the unmeasured radial velocity; (3) a kinematic age different from the spin-down age; and (4) biasing of the scintillation velocity by enhanced scattering from the North Polar Spur.