Gamma-ray astronomy and baryonic dark matter

Recently, Dixon et al. have reanalyzed the EGRET data, finding a statistica lly significant diffuse gamma-ray emission from the Galactic halo. We show that this emission can naturally be explained within a previously proposed model for baryonic dark matter, in which gamma-rays are produced through th e interaction of high-energy cosmic-ray protons with cold H-2 clouds clumpe d into dark clusters; these bark clusters supposedly populate the outer Gal actic halo and can show up in microlensing:observations. Our estimate for t he halo gamma-ray flux turns out to be in remarkably good agreement with th e discovery by Dixon et al. in 1998. We also address future prospects to te st our predictions.