We use the GALPROP model for cosmic-ray (CR) propagation to obtain our best
prediction of the Galactic component of gamma rays, and show that away from the
Galactic plane it gives an accurate prediction of the observed EGRET
intensities. On this basis we re-evaluate the isotropic extragalactic gamma-ray
background (EGRB). We find that for some energies previous work underestimated
the Galactic contribution and hence overestimated the background. Our new EGRB
spectrum shows a positive curvature similar to that expected for models of the
extragalactic emission based on the blazar population.Comment: 4 pages, 1 ps-figures, tsukuba.sty, to appear in the Proc. 28th
International Cosmic Ray Conference (Tsukuba, Japan 2003). More details can
be found at http://www.gamma.mpe-garching.mpg.de/~aws/aws.htm
