Other
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006hrxs.confe..21m&link_type=abstract
High Resolution X-ray Spectroscopy: towards XEUS and Con-X, Proceedings of the international workshop held at the Mullard Space
Other
Scientific paper
We have recently shown that the X-ray spectrum of galactic weakly-magnetized accreting neutron stars is strongly modulated by the presence of a photo-ionized accretion-disk wind. Current observations suggest that this is also true for galactic accreting black holes. This ionized material produces not just strong absorption/emission lines that are detected with the spectral resolution currently available, but also a large number of weak (unresolved) line blends and edges that strongly distort the shape of the X-ray continuum in these sources. Since a simple, self-consistent, model of a photo-ionized wind is not yet widely available, so far the effect of this ionized gas on the X-ray continuum has been largely neglected. Here I review the evidence from XMM-Newton and Chandra about the existence of this photo-ionized accretion-disk wind. I then show how the presence of this material, if not taken into account properly, leads to wrong conclusions about other properties of the X-ray spectra of these systems. One such example is the broad iron line reported in galactic (and extragalactic) black hole candidates.
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