Astronomy and Astrophysics – Astronomy
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.0802t&link_type=abstract
American Astronomical Society, 198th AAS Meeting, #08.02; Bulletin of the American Astronomical Society, Vol. 33, p.796
Astronomy and Astrophysics
Astronomy
Scientific paper
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.
Borozdin Konstantin
Mason Keith
Priedhorsky William
Shirey Robert
Soria Rob
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