X-Ray Emission from Rotation-Powered Pulsars

We study the properties of pulsed component of hard (2--10keV) x-ray emission from pulsars based on the new version of outer gap model we proposed previously Astrophys. J. 604(2004)317. On the frame of this outer gap model, we derive an expression of non-thermal pulsed x-ray luminosity of rotation-powered pulsars, and then apply it to the pulsars whose pulsed x-rays are detected by ASCA. Using the Kolmogorov--Smirnov test, we determine the model parameter. The present results indicate L_X ∝ L^1.15_sd for these x-ray pulsars, which is consistent with the observed data.