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

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 -10 39 erg/s and 10 3 -10 7 y, respectively. The predictions of gamma-ray pulsars detected by the AGILE and GLAST missions are given.