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- W2951621900 abstract "XMM-Newton EPIC observations reveal the population of X-ray sources of the bright Local Group spiral galaxy M 31, a low-star-formation-rate galaxy like the Milky Way, down to a 0.2-4.5 keV luminosity of 4.4E34 erg/s. With the help of X-ray hardness ratios and optical and radio information different source classes can be distinguished. The survey detected 856 sources in an area of 1.24 square degrees. Sources within M 31 are 44 supernova remnants (SNR) and candidates, 18 super-soft sources (SSS), 16 X-ray binaries (XRBs) and candidates, as well as 37 globular cluster sources (GlC) and candidates, i.e. most likely low mass XRBs within the GlC. 567 hard sources may either be XRBs or Crab-like SNRs in M 31 or background AGN. 22 sources are new SNR candidates in M 31 based on X-ray selection criteria. Time variability information can be used to improve the source classification. Two GlC sources show type I X-ray bursts as known from Galactic neutron star low mass XRBs. Many of the M 31 SSS detected with XMM-Newton, Chandra and ROSAT, could be identified with optical novae. Soft X-ray light curves can be determined in M 31 center observations for several novae at a time opening a new area of nova research." @default.
- W2951621900 created "2019-06-27" @default.
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- W2951621900 date "2005-11-01" @default.
- W2951621900 modified "2023-09-23" @default.
- W2951621900 title "An X-ray source population study of the Andromeda galaxy M 31" @default.
- W2951621900 hasPublicationYear "2005" @default.
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