X-ray spectroscopy (PDF) - SRON
X-ray spectroscopy (PDF) - SRON
X-ray spectroscopy (PDF) - SRON
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Example: Interstellar medium<br />
opacity<br />
Contribution of the elements to<br />
the ISM opacity<br />
115<br />
116<br />
Dust depletion<br />
Spectral signatures of dust<br />
• Atomic structure<br />
changes when atom<br />
bound in molecule<br />
• Example: H 2 O<br />
• Study of fine structure<br />
near edges <br />
chemical structure<br />
• Uncertainties/lacking<br />
lab data<br />
117<br />
118<br />
X-<strong>ray</strong> absorption in practice<br />
Nasty correction factors are interesting!<br />
Interstellar X-<strong>ray</strong> absorption<br />
• High-quality RGS<br />
spectrum X-<strong>ray</strong><br />
binary GS1826-<br />
238 (Pinto et al.<br />
2010)<br />
• ISM modeled here<br />
with pure cold gas<br />
• Poor fit<br />
119<br />
120
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