THE EFFECT OF E(-) PAIR PRODUCTION ON GAMMA-RAY LUMINOSITIES OF PULSARS()E()

We present details of a modified phenomenological polar cap model of g amma-ray emission from pulsars, introduced recently by Rudak and Dyks (1998). The model attributes observed gamma-rays mostly to electron-po sitron pairs created in magnetospheres by high energy curvature photon s emitted by primary electrons. We show how the basic ingredient of th e model - the number of created e(+/-) pairs - depends on the pulsar p eriod, and the magnetic field, for two different prescriptions for the energy of the primaries, and how it affects predictions for the gamma -ray luminosity. The model has been successfully applied to the result s of the Compton Gamma Ray Observatory (CGRO) observations.