Table · dataset · 2012
FeX soft X-ray lines
Listed in IVOA Registry (Virtual Observatory)
New atomic calculations for Fe X are presented.
Description
They focus on the need to model the soft X-ray spectrum and in particular the line at 94.0{AA} which is the dominant contribution to the Solar Dynamics Observatory (SDO) Atmospheric Imaging Assembly (AIA) 94{AA} band in quiet Sun conditions. This line, and others in the band, are due to strong decays from n=4 levels.
We present new large-scale R-matrix (up to n=4) and distorted-wave (DW, up to n=6) scattering calculations for electron collisional excitation and compare them to earlier work. We find significant discrepancies with previous calculations. We show that resonances significantly increase the cross-sections for excitations from the ground state to some n=4 levels, in particular to those in the 3s^2^ 3p^4^ 4s configuration.
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Cascading from higher levels is also important. We suggest a new identification for the 3s 3p^6^ ^2^S_1/2_ - 3s 3p^5^ 4s ^2^P_3/2_ transition, that has a predicted intensity larger than the decays from the 3s^2^ 3p^4^ 4s levels which were identified by Edlen in 1936. The results presented here are relevant to our understanding of transitions from n=4 levels in a wide range of other ions.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/541/A90 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2012A&A...541A..90D ui.adsabs.harvard.edu/abs/2012A%26A...541A..90D ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/a%2Ba/541/a90 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- X-Ray
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Imaging 75%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/541/a90 | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:x-ray | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].local:modality:imaging | enrichment · IVOA Registry | keyword-concept-rules@1.0.0 | title+description (75%) |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |