![](https://d3ilqtpdwi981i.cloudfront.net/JfSt3qcR8wYdcpjrrXGmABHmz5M=/425x550/smart/https://bepress-attached-resources.s3.amazonaws.com/uploads/29/76/b5/2976b5ba-eb8c-40d3-83ad-db90cdf8a115/thumbnail_e94d375d-cf57-425e-b055-0c9c489c6822.jpg)
The low-energy gamma-ray spectrum from the direction of the Galactic center is determined using data obtained with the SMM Gamma-Ray Spectrometer. It is found that the diffuse gamma-ray spectrum from the Galactic center region can be interpreted in a straightforward way as the sum of five components of a presented equation. The components include a hard power law dominating the continuum at high energies caused principally by cosmic ray electron bremsstrahlung radiation, two narrow lines due to Al-26 decay and positron annihilation, an excess continuum component below 0.511 MeV consistent with the annihilation of positrons by formation of Ps, and a soft power law at low energies which is consistent with an extrapolation upward in energy of known hard X-ray sources in the Galactic center region.