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Chandra detection of reflected X-ray emission from the type 2 QSO in IRAS 09104+4109

K. Iwasawa·A. C. Fabian·S. Ettori
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Abstract

We present X-ray imaging spectroscopy of the extremely luminous infrared galaxy IRAS 09104+4109 (z=0.442) obtained with the Chandra X-ray Observatory. With the arcsec resolution of Chandra, an unresolved source at the nucleus is separated from the surrounding cluster emission. A strong iron K line at 6.4 keV on a very hard continuum is detected from the nuclear source, rendering IRAS 09104+4109 the most distant reflection-dominated X-ray source known. Combined with the BeppoSAX detection of the excess hard X-ray emission, it provides further strong support to the presence of a hidden X-ray source of quasar luminosity in this infrared galaxy. Also seen is a faint linear structure to the North, which coincides with the main radio jet. An X-ray deficit in the corresponding region suggests an interaction between the cluster medium and the jet driven by the active nucleus.

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K. Iwasawa, A. C. Fabian, S. Ettori. 2000-11-28. Chandra detection of reflected X-ray emission from the type 2 QSO in IRAS 09104+4109. https://doi.org/10.1046/j.1365-8711.2001.04236.x

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