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Astron. Astrophys. 352, 64-84 (1999)
Footnotes1. Most of the diffuse X-ray emission, however, vanishes after sharpening the X-ray peaks of the HRI image with the method explained in Sect. 2.2 (Pietsch 1999) © European Southern Observatory (ESO) 1999 Online publication: November 23, 1999 ![]() |