J/A+A/643/A57ivo://CDS.VizieR/J/A+A/643/A57doi:10.26093/cds/vizier.36430057CDSDeprince J.Bautista M.A.Fritzsche S.Garcia J.Kallman T.,Mendoza C.Palmeri P.Quinet P.2021-05-03T09:02:24Z2020-11-03T06:49:01ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fratomic-physicsIn the framework of compact-object accretion disks, we have calculated plasma environment effects on the atomic structure and decay parameters used in the modeling of the K lines in lowly charged iron ions, namely FeII-FeVIII. We use the fully relativistic multiconfiguration Dirac-Fock (MCDF) method approximating the plasma electron-nucleus and electron-electron screenings with a time-averaged Debye-Huckel potential. Results. Modified ionization potentials, K-threshold energies, wavelengths, radiative emission rates, and Auger widths are reported for plasmas characterized by electron temperatures and densities in the ranges 10^5^-10^7^K and 10^18^-10^22^cm^-3^. In addition, we propose two universal fitting formulae to predict the IP and K-thresold lowerings in any elemental ion. We conclude that the high-resolution X-ray spectrometers onboard the future XRISM and ATHENA space missions will be able to detect the lowering of the K edges of these Fe ions due to the extreme plasma conditions occurring in accretion disks around compact objects.2020A&A...643A..57Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/643/A57CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/626/A83 : FeXVII-XXV K lines plasma environment effects (Deprince+, 2019)J/A+A/635/A70 : FeIX-XVI K lines plasma environment effects (Deprince+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/643/A57https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/643/A57http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/643/A57https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/643/A57https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/643/A57http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/643/A57GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/643/A57/table4Wavelengths and transition probabilitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintZeffEffective chargephys.atmol.numberintTransTransition identificationmeta.id;phys.atmol.transProb;phys.atmol.transitionWL1Wavelength in Angstroem (mu = 0 a.u.)0.1nmem.wl;phys.atmol.transitionfloatWL2Wavelength in Angstroem (mu = 0.1 a.u.)0.1nmem.wl;phys.atmol.transitionfloatWL3Wavelength in Angstroem (mu = 0.25 a.u.)0.1nmem.wl;phys.atmol.transitionfloatAr1Transition probability (mu = 0 a.u.)s**-1phys.atmol.transProbdoubleAr2Transition probability (mu = 0.1 a.u.)s**-1phys.atmol.transProbdoubleAr3Transition probability (mu = 0.25 a.u.)s**-1phys.atmol.transProbdouble