Gamma-Ray Pulsars Expected in the Outer Gap Model of Gamma-RayEmission

We study the possibility of high-energy gamma-ray emission from the known 1130 radio pulsars based on the outer gap model of high energy emission from pulsars. We estimate the fractional size of outer gap, the integrated flux, the gamma-ray luminosity for each known radio pulsar, and find that only 14% of the known radio pulsars are gamma-ray emitters according to the outer gap model. In the sample of possible 156 gamma-ray pulsars, our statistical analysis indicates that the distributions of the spin-down powers and the ages of these pulsars concentrate mainly on 10^33.5-10³⁹ erg/s and 10³-10⁷ y, respectively. The predictions of gamma-ray pulsars detected by the AGILE and GLAST missions are given.