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S. Trudolyubov, K. Borozdin (NIS-2, Los Alamos National Laboratory), W. Priedhorsky (Los Alamos National Laboratory), R. Shirey (Department of Physics, University of California, Santa Barbara), K. Mason, R. Soria (Mullard Space Science Laboratory, University College London, UK)
We report on the first two observations of the central region of M31 with XMM-Newton observatory. High sensitivity of the XMM X-ray instruments allows us to perform a detailed study of spectral properties and variability of a nearly 40 bright point sources. According to the results of spectral analysis the X-ray sources can be divided into four main classes: the super-soft sources, the hard sources, the sources with soft spectra and the sources with high intrinsic absorption. Several sources show a significant variability between the two XMM observations and earlier Chandra and ROSAT observations. We compare the spectral and temporal properties of the bright X-ray source population of the central region of M31 with the properties of the X-ray sources in the corresponding region of our own Galaxy.
The author(s) of this abstract have provided an email address for comments about the abstract: tsp@nis.lanl.gov