Monthly Archives: March 2013

Expanded Iron UTA spectra — probing the thermal stability limits in AGN clouds

Ferland, G. J.; Kisielius, R.; Keenan, F. P.; van Hoof, P. A. M.; Jonauskas, V.; Lykins, M. L.; Porter, R. L.; Williams, R. J. R  ApJ in press; eprint arXiv:1303.0316 The Fe unresolved transition array (UTAs) produce prominent features in … Continue reading

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Suppression of Dielectronic Recombination Due to Finite Density Effects

D. Nikolić, T. W. Gorczyca, K. T. Korista, G. J. Ferland, N. R. Badnell (Submitted on 10 Mar 2013) We have developed a general model for determining density-dependent effective dielectronic recombination (DR) rate coefficients in order to explore finite-density effects on … Continue reading

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Photoionization modeling of oxygen K absorption in the interstellar medium: the Chandra grating spectra of XTE J1817-330

E. Gatuzz (1), J. García (2), C. Mendoza (1,4), T. R. Kallman (3), M. Witthoeft (3), A. Lohfink (2), M. A. Bautista (5), P. Palmeri (6) and P. Quinet (7) ((1) Centro de Física, Instituto Venezolano de Investigaciones Científicas, PO … Continue reading

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