Simultaneous RXTE/OSSE Measurements of the Diffuse X-ray/gamma -ray Radiation from the Galactic Plane
We present the first simultaneous RXTE/OSSE measurements of the diffuse X-ray/gamma -ray radiation from the Galactic plane near the Scutum arm region. The contribution of discrete hard X-ray sources detected by RXTE has been determined and subtracted from the hard X-ray/soft gamma -ray spectrum obtained by OSSE. As a result the least contaminated spectrum of the diffuse emission has been obtained. The spectrum in the 3-500 keV enrgy band is best fitted with a thermal component plus an exponentially cut off power law model which dominates above 10 keV. We discuss the origin of the emission in terms of both unresolved discrete sources and diffuse radiation processes.
American Astronomical Society Meeting Abstracts #194
- Pub Date:
- May 1999