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X-ray Line Emitting Objects in XMM-Newton Observations: the Tip of the Iceberg

T. Maccacaro·V. Braito·R. Della Ceca·P. Severgnini·A. Caccianiga
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Abstract

We present preliminary results from a novel search for X-ray Line Emitting Objects (XLEOs) in XMM-Newton images. Three sources have been detected in a test-run analysis of 13 XMM-Newton observations. The three objects found are most likely extremely absorbed AGN characterized by a column density NH~10^24cm^-2. Their redshift has been directly determined from the X-ray data, by interpreting the detected emission line as the 6.4 keV Fe line. The measured equivalent width of the X-ray line is, in all three cases, several keV. This pilot study demonstrates the success of our search method and implies that a large sample of XLEOs can be obtained from the public XMM-Newton data archive.

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T. Maccacaro, V. Braito, R. Della Ceca, P. Severgnini, A. Caccianiga. 2004-11-05. X-ray Line Emitting Objects in XMM-Newton Observations: the Tip of the Iceberg. https://doi.org/10.1086/427024

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