The unified model and the Seyfert 2 infrared dichotomy |
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Authors: | D M Alexander † |
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Institution: | Institute of Astronomy, Madingley Road, Cambridge CB3 0HA |
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Abstract: | We present X-ray imaging spectroscopy of the extremely luminous infrared galaxy IRAS 09104+4109 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 for 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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Keywords: | galaxies: individual: IRAS 09104+4109 infrared: galaxies X-rays: galaxies |
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