Dielectronic Recombination Studies Motivated by Active Galactic Nuclei

Details Dielectronic Recombination Studies Motivated by Active Galactic Nuclei Dielectronic Recombination Studies Motivated by Active Galactic Nuclei

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aps..dmp.k1036l&link_type=abstract

American Physical Society, 38th Annual Meeting of the Division of Atomic, Molecular, and Optical Physics, June 5-9, 2007, abstra

Physics

Scientific paper

Recent X-ray satellite observations of active galactic nuclei indicate shortcomings in the low temperature dielectronic recombination (DR) data for iron M-shell ions. In order to resolve this issue and provide reliable iron M-shell DR data, we are carrying out a series of measurements using the heavy-ion Test Storage Ring at the Max-Planck-Institute for Nuclear Physics in Heidelberg, Germany. At temperatures where these ions are predicted to form in photoionized gas, we find significant discrepancies between our experimental results and previously recommended DR data. We are using our laboratory results to produce DR rate coefficients [1] and to benchmark our state-of-the-art DR calculations [2]. Here we report on recent progress. [1] E. W. Schmidt et al., Astrophys. J., 641, L157 (2006) [2] N. R. Badnell, J. Phys. B, 39, 4285 (2006)

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