A Broad iron K-alpha line at z = 1.146

Apr, 2004
5 pages
Published in:
  • Mon.Not.Roy.Astron.Soc. 351 (2004) L9
e-Print:

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200520092013201720203120
Abstract: (arXiv)
We report the discovery of a strong iron K alpha line in the hard X-ray selected source CXOJ 123716.7+621733 in the Chandra Deep Field North survey at z=1.146. The analysis is made possible by the very deep exposure ~2 Ms and low background of the ACIS detector. The line profile seems to be inconsistent with a narrow feature. The best fit solution is achieved with a broad line. Most of the flux in the broad component originates at energies below 6.4 keV with a shape similar to that expected from emission in the innermost regions of the accretion disk.