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dc.creatorNahar, Sultana Nurun
dc.creatorPradhan, Anil K.
dc.creatorChen, Guo Xin
dc.creatorDelahaye, Franck
dc.creatorOelgoetz, Justin
dc.identifier.citationPradhan, Anil K., Chen, Guo Xin, Delahaye, Franck, Nahar, Sultana Nurun, Oelgoetz, Justin. "X-ray absorption via Kα resonance complexes in oxygen ions," Monthly Notices of the Royal Astronomical Society, v. 341, no. 4, 2003, pp. 1268-1271.en_US
dc.descriptionRelevant data is available at:
dc.descriptionThe definitive version is available at
dc.description.abstractThe Kα resonance complexes in oxygen ions OI–O VI are theoretically computed, and resonance oscillator strengths and wavelengths are presented. The highly resolved photoionization cross-sections, with relativistic fine structure, are computed in the coupled channel approximation using the Breit–Pauli R-matrix method. A number of strong Kα resonances are found to be appreciable, with resonance oscillator strengths f_r > 0.1. The Kα resonance wavelengths of OI–O VI lie in the relatively narrow wavelength range 22–23.5 Å, and the X-ray opacity in this region should therefore be significantly affected by K → L transitions in oxygen. The results should be useful in the interpretation of soft X-ray spectra observed from Chandra and XMM–Newton.en_US
dc.description.sponsorshipThis work was partially supported by the US National Science Foundation and the NASA Astrophysical Theory Program.en_US
dc.subjectatomic dataen_US
dc.subjectatomic processesen_US
dc.subjectline -- profilesen_US
dc.subjectgalaxies -- Seyferten_US
dc.subjectX-rays -- galaxies
dc.titleX-ray absorption via Kα resonance complexes in oxygen ionsen_US

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