RXTE OBSERVATIONS OF THE STARBURST OF GALAXY M82

The two nearby starburst galaxies M82 and NGC 253 were recently observ ed with the PCA and HEXTE experiments aboard RXTE. Here we present fir st results from a preliminary analysis of similar to 75% of the M82 da ta. A power-law, photon index 2.0 +/- 0.1, and thermal emission at kT = 7.4 +/- 0.7 keV, are both acceptable spectral fits to the data. For the first time, we find evidence for iron lines; there is no evidence for temporal variability.