RXTE observations of the starburst galaxy M82

Physics – Nuclear Physics

Scientific paper

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Scientific paper

The two nearby starburst galaxies M82 and NGC 253 were recently observed with the PCA and HEXTE experiments aboard RXTE. Here we present first results from a preliminary analysis of ~75% of the M82 data. A power-law, photon index 2.0+/-0.1, and thermal emission at kT=7.4+/-0.7keV, 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.

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