Serendipitous EXOSAT sources in the region of the Coma cluster - Active galactic nuclei with steep X-ray spectra
A ≡7-hr observation of the central part of the Coma cluster of galaxies has been performed with the EXOSAT LE telescopes and CMA detectors. Five serendipitous sources are detected within the inner 35 arcmin radius of the field. Optical spectroscopy shows that four of these are background AGN not associated with the cluster. At the sensitivity level
Branduardi-Raymont, G. et al.
Fecha de publicación:
10
1985