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New calculations of Fe L-shell X-ray spectra in high-temperature plasmas
Abstract
The predictions of the standard plasma emission codes are inconsistent with spectroscopic data acquired during the ASCA performance verification phase. The discrepancies are evident in the 0.7-1.5 keV spectral range, the domain of n approaches 2 (L-shell) transitions in highly ionized Fe species. We have recalculated Fe L-shell spectra using the HULLAC atomic physics package and find that an update of the Fe data used in the current generation of emission line codes is warranted. We present here a synopsis of our results for the charge states Fe XXIII and Fe XXIV. These results are relevant to the interpretation of spectroscopic data from stellar coronae, supernova remnants, and galaxy clusters.
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Cited by
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Revealing the Properties of Dark Matter in the Merging Cluster MACS J0025.4−1222
Bradač, M., Allen, S. W., Treu, T., Ebeling, H., Massey, R., Morris, R. G., von der Linden, A., & Applegate, D. (2008) · The Astrophysical Journal · doi:10.1086/591246 · Cited by 303
THE FERMI BUBBLES: SUPERSONIC ACTIVE GALACTIC NUCLEUS JETS WITH ANISOTROPIC COSMIC-RAY DIFFUSION
Yang, H.-Y. K., Ruszkowski, M., Ricker, P. M., Zweibel, E., & Lee, D. (2012) · The Astrophysical Journal · doi:10.1088/0004-637x/761/2/185 · Cited by 147
“For the simulated X-ray map, the X-ray emissivity in an energy range 1.4 − 1.6 keV is calculated using the MEKAL model (Mewe et al. 1985; Kaastra & Mewe 1993; Liedahl et al. 1995) implemented in the utility XSPEC (Arnaud 1996), assuming solar metallicity.”
MethodInfluentialMisaligned Jets from Sgr A* and the Origin of Fermi/eROSITA Bubbles
Sarkar, K. C., Mondal, S., Sharma, P., & Piran, T. (2023) · The Astrophysical Journal · doi:10.3847/1538-4357/acd75d · Cited by 17
Fermi bubbles: high-latitude X-ray supersonic shell
Keshet, U., & Gurwich, I. (2018) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/sty1533 · Cited by 13
Metadata
- Authors
- Liedahl, D. A., Osterheld, A. L., & Goldstein, W. H.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1995-01
- Volume
- 438
- Pages
- L115
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2025489111
- Cited by
- 822
- References
- 0
- FWCI
- 5.37
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: New calculations of Fe L-shell X-ray spectra in high-temperature plasmas. https://app.cochat.ai/papers/10.1086/187729
- The paper
- Liedahl, D. A., Osterheld, A. L., & Goldstein, W. H. (1995). New calculations of Fe L-shell X-ray spectra in high-temperature plasmas. The Astrophysical Journal. https://doi.org/10.1086/187729
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
