Evidence for GeV emission from the Galactic Center Fountain

D. H. Hartmann(1), D. D. Dixon(2), E. D. Kolaczyk(3), J. Samimi(4)

(1) Department of Physics and Astronomy, Clemson University, Clemson, SC 29634
(2) Institute of Geophysics and Planetary Physics, University of California Riverside, CA 92521
(3) Department of Statistics, University of Chicago, Chicago IL
(4) Sharif University, Tehran, Iran

Paper: to appear in the proceedings of the 4th Compton Symp.

EPrint Server: astro-ph/9709029


The region near the Galactic center may have experienced recurrent episodes of injection of energy in excess of ~ 10^55 ergs due to repeated starbursts involving more than ~ 10^4 supernovae. This hypothesis can be tested by measurements of gamma -ray lines produced by the decay of radioactive isotopes and positron annihilation, or by searches for pulsars produced during starbursts. Recent OSSE observations of 511 keV emission extending above the Galactic center led to the suggestion of a starburst driven fountain from the Galactic center (DS97). We present EGRET observations that might support this picture.

Preprints available from the authors at dixon@agouti.ucr.edu , or the raw TeX (no figures) if you click here.

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