Spectral Implications of Atomic Uncertainties in Optically-thin Hot Plasmas
arXiv:2011.08230 · doi:10.3847/1538-4357/abcaff
Abstract
Two new high-resolution X-ray spectroscopy missions, XRISM and Athena, will observe deeper and with higher X-ray resolution than ever before possible. Interpreting these new X-ray spectra will require understanding the impact that uncertainties on fundamental atomic quantities such as collisional cross sections, transition rates, and wavelengths have on spectral models. As millions of values are required to generate even a simple model of an optically-thin hot plasma, most such rates exist only as theoretical calculations. We have developed methods to estimate the uncertainty in the final spectral calculations based on published experimental data and plausible approximations to the uncertainties in the underlying atomic data. We present an extension to the pyatomdb code that implements these methods and investigate the sensitivity of selected strong diagnostic lines in the X-ray bandpass (0.3-12 keV).
arXiv comment18 pages, 9 figures, to be published in ApJ
References in corpus (26)
- Collisional Plasma Models with APEC/APED: Emission Line Diagnostics of Hydrogen-like and Helium-like Ions
- Ionization balance for optically thin plasmas: rate coefficients for all atoms and ions of the elements H to Ni
- Updated Atomic Data and Calculations for X-ray Spectroscopy
- The Quiescent Intracluster Medium in the Core of the Perseus Cluster
- The magnetic nature of disk accretion onto black holes
- A new approach to analyzing solar coronal spectra and updated collisional ionization equilibrium calculations. II. Additional ionization rate coefficients
- Radiative recombination data for modelling dynamic finite-density plasmas
- Collisional Ionization Equilibrium for Optically Thin Plasmas. I. Updated Recombination Rate Coefficients for Bare though Sodium-like Ions
- Atomic data and spectral modeling constraints from high-resolution X-ray observations of the Perseus cluster with Hitomi
- The Coronae of AR Lac
- Dielectronic Recombination in Photoionized Gas. II. Laboratory Measurements for Fe XVIII and Fe XIX
- Dielectronic Recombination (via N=2 --> N'=2 Core Excitations) and Radiative Recombination of Fe XX: Laboratory Measurements and Theoretical Calculations
- Electron-ion recombination measurements motivated by AGN X-ray absorption features: Fe XIV forming Fe XIII
- Storage Ring Cross Section Measurements for Electron Impact Ionization of Fe^11+ Forming Fe^12+ and Fe^13+
- X-ray emission from thin plasmas. Collisional ionization for atoms and ions of H to Zn
- The Fe XXII I(11.92 A)/I(11.77 A) Density Diagnostic Applied to the Chandra High Energy Transmission Grating Spectrum of EX Hydrae
- Electron-ion Recombination of Fe X forming Fe IX and of Fe XI forming Fe X: Laboratory Measurements and Theoretical Calculations
- Dielectronic Recombination of Fe XV forming Fe XIV: Laboratory Measurements and Theoretical Calculations
- X-ray spectra of the Fe-L complex II: atomic data constraints from EBIT experiment and X-ray grating observations of Capella
- Electron-Impact Multiple Ionization Cross Sections for Atoms and Ions of Helium through Zinc
- Electron-ion Recombination of Fe XII forming Fe XI: Laboratory Measurements and Theoretical Calculations
- Absolute rate coefficients for photorecombination and electron-impact ionization of magnesium-like iron ions from measurements at a heavy-ion storage ring
- Storage Ring Cross Section Measurements for Electron Impact Ionization of Fe 7+
- An In-Depth Study of the Abundance Pattern in the Hot Interstellar Medium in NGC 4649
- Electron Impact Ionization of Stored Highly Charged Ions
- Dielectronic recombination data for astrophysical applications: Plasma rate-coefficients for Fe^q+ (q=7-10, 13-22) and Ni^25+ ions from storage-ring experiments
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